WO2020041044A1 - Crustacean trap - Google Patents

Crustacean trap Download PDF

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Publication number
WO2020041044A1
WO2020041044A1 PCT/US2019/046381 US2019046381W WO2020041044A1 WO 2020041044 A1 WO2020041044 A1 WO 2020041044A1 US 2019046381 W US2019046381 W US 2019046381W WO 2020041044 A1 WO2020041044 A1 WO 2020041044A1
Authority
WO
WIPO (PCT)
Prior art keywords
trap
mesh
ceiling
entrance
frame
Prior art date
Application number
PCT/US2019/046381
Other languages
French (fr)
Inventor
Erick BENDURE
Original Assignee
Bendure Erick
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bendure Erick filed Critical Bendure Erick
Priority to CA3110156A priority Critical patent/CA3110156A1/en
Publication of WO2020041044A1 publication Critical patent/WO2020041044A1/en
Priority to US17/179,780 priority patent/US20210169056A1/en

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Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01KANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K69/00Stationary catching devices
    • A01K69/06Traps
    • A01K69/10Collapsible traps

Definitions

  • Crustacean traps such as crab, prawn, and shrimp traps, are devices which are dropped off of fishing boats to the sea floor in order to catch crustaceans.
  • a variety of crustacean trap designs have been developed.
  • the basic elements of a crab trap also referred to as a crab pot, generally include a cage with hinged doors that open inward only. Bait is fastened inside the cage. Crabs push the doors open to enter the cage, and the crabs become trapped inside when they are subsequently unable to push the doors outward.
  • a long line is attached at the top of the cage, and a buoy is tied to an opposite end of the line. The buoy floats at the water’s surface while the crab pot is left on the sea floor for a period of time.
  • Prawn and shrimp traps are similar to crab traps, in that they are generally configured as cages that sink to the sea floor, and which have entrances that are more easily entered than exited.
  • Fishermen generally load multiple crab or prawn/shrimp traps on a boat, sail to their fishing grounds, bait the traps, and drop them overboard in various locations. The fishermen may then return to shore to retrieve additional traps as desired, repeating the operation as needed to deploy the desired number of traps. They then return to the traps, pull them back to the surface, and retrieve any crustaceans trapped inside. They may again make several trips as needed to return the traps to shore or to the next fishing grounds.
  • Crustacean fishing is labor intensive, and there there is a need in the industry for improved trap designs which can improve the efficiency and effectiveness of crustacean fishing operations.
  • an improved crustacean trap may comprise a trap frame.
  • the trap frame can include a floor frame section and a ceiling frame section.
  • the surface area of the ceiling frame section can be larger than the surface area of the floor frame section.
  • a plurality of angled stmts can connect the floor frame section to the ceiling frame section.
  • the angled struts define a tapered or angled side between the floor frame section and the ceiling frame section.
  • the trap frame may be surrounded with mesh, including a floor mesh extending over the floor surface area, a side mesh extending over portions of the tapered side, and a ceiling mesh extending over the ceiling surface area.
  • One or more entrances through the tapered side can comprise an entrance mesh extending inwardly from a portion of the tapered side to an entrance frame.
  • the entrance frame can be movable with respect to the trap frame, as described further herein.
  • the disclosed crustacean traps can allow nested stacking of multiple crustacean traps.
  • the tapered sides of the crustacean traps allow nested stacking of traps.
  • the ceiling mesh can be releasable to allow nested stacking of multiple crustacean traps, and the ceiling mesh can be restorable for crustacean trap deployment.
  • entrance frames can also be movable or collapsible to facilitate nested stacking.
  • a tensioning element can pull the entrance frames inwardly to hold the entrance frames in place for fishing. The tensioning element can be released to allow the entrance frames to rotate, collapse or otherwise or move aside for nested stacking. Further aspects of the invention are described in detail below.
  • FIG. 1 illustrates an example crab trap frame, as one example of a crustacean trap frame, along with entrance frames, a tensioning element and a weight bar.
  • FIG. 2 provides another view of the example crab trap frame introduced in FIG.
  • FIG. 3 illustrates the example crab trap frame introduced in FIG. 1, along with example entrance meshes installed at entrances thereof.
  • FIG. 4 illustrates the example crab trap frame introduced in FIG. 1, along with example side and floor mesh installed thereon.
  • FIG. 5 illustrates an example first complete crab trap.
  • FIG. 6 illustrates an example second complete crab trap.
  • FIG. 7 illustrates nested stacking of multiple crustacean traps.
  • FIG. 8 illustrates an example prawn and shrimp trap.
  • FIG. 9 illustrates an elevation view of the example prawn and shrimp trap introduced in FIG. 8.
  • FIG. 10 illustrates the example prawn and shrimp trap introduced in FIG. 8, and further comprising a collapsible ceiling mesh.
  • FIG. 1 illustrates an example crab trap frame, as one example of a crustacean trap frame, and FIG. 1 further illustrates entrance frames, a tensioning element and a weight bar, in accordance with various aspects and embodiments of the subject disclosure.
  • the trap frame 100 may be made, e.g., of stainless steel, rubber coated mild steel, Polly Vinyl Chloride (PVC) coated steel, or other suitably rigid and corrosion resistant material.
  • the trap frame 100 includes a floor frame section 104 defining a floor surface area.
  • the term“surface area” as used herein does not necessarily imply the presence of a surface, but can be simply the area defined by the surrounding element.
  • the floor frame section 104 includes a circular ring at the bottom of the trap frame 100.
  • the trap frame 100 further includes a ceiling frame section 102 defining a ceiling surface area which is larger than the floor surface area.
  • the ceiling frame section 102 includes a circular ring at the top of the trap frame 100.
  • the trap frame 100 further includes a plurality of angled stmts, such as example angled stmt 106 and example angled strut 122, which connect the floor frame section 104 to the ceiling frame section 102 and define a tapered side between the floor frame section 104 and the ceiling frame section 102.
  • angled stmts such as example angled stmt 106 and example angled strut 122
  • the tapered side between the floor frame section 104 and the ceiling frame section 102 comprises an outer “surface” of the conical shape defined by the trap frame 100 - although again, there is not necessarily any actual material surface, as will be understood from FIG. 1.
  • an angle at which the angled stmts connect to the floor frame section and the ceiling frame section can comprise, e.g., a ten to twenty degree angle, for example, a fifteen degree angle, as measured from vectors extending normal (perpendicular) from the floor surface area or ceiling surface area, respectively.
  • Circular“escape rings” 120 are attached between some of the angled stmts.
  • crab traps must have at least two escape rings of four and one quarter (4.25) inches in size, located in the top half of the crab trap.
  • crossbars 118 can extend between angled stmts, as shown, to form escape windows for undersize crabs. The escape windows can be over the entrances to the crustacean trap, as shown.
  • Vertical elements 119 can optionally divide escape windows into multiple sections as desired.
  • a lid 150 can be attached to the trap frame 100, e.g., by hinge elements 152.
  • the lid 150 can be semicircular and openable and closable to access an interior of the cmstacean trap without releasing a ceiling mesh.
  • the releasable ceiling mesh is discussed further in connection with FIG. 6.
  • Entrance frames 108 can also optionally be attached to the trap frame 100.
  • entrance frames 108 are attached by entrance frame hinge elements 110 to support struts 116, and support struts 116 are welded to the trap frame 100.
  • Support struts 116 can include elements extending inwardly from the trap frame 100 into the cmstacean trap, as shown.
  • Support struts 116 can optionally be vertically braced to angled stmts, as shown.
  • Support stmts 116 can include crossbar elements that support the hinge elements 110, as shown.
  • Entrance frames 108 can rotate forward and backward on the support stmts 116, thereby allowing entrance frames 108 to rotate up for fishing, and down for nested stacking of traps.
  • entrance frames need not be attached to the trap frame, for example as illustrated in FIG. 8.
  • one-way gates 112 are attached by gate hinges 114 to the entrance frames 108.
  • the illustrated one-way gates 112 comprise“U” shaped metal elements with arms that extend downwardly below the crossbar elements of support struts 116, so that the one-way gates 112 can swing inwardly into the trap, but cannot swing outwardly.
  • FIG. 1 furthermore illustrates a tensioning element 130.
  • the tensioning element 130 can comprise, e.g., a wire, a line, a twine, a cord fitted with a coil spring, or an elastic element such as a bungee cord, secured to the entrance frames 108, in order to pull the entrance frames 108 inwardly.
  • the tension applied by tensioning element 130 is countered by tension applied in an opposite direction by entrance mesh, as shown for example in FIG. 3.
  • the entrance frames 108 can be held upright by the tensioning element 130 and the entrance mesh.
  • springs may be used to bias the entrance frames 108 into either a vertical (restored) or horizontal (collapsed) position.
  • the tensioning element 130 can be releasable to allow the entrance frames 108 to collapse by rotating on the entrance frame hinge elements 110, to facilitate nested stacking of multiple crustacean traps. Bait may be conveniently zip-tied or otherwise attached to the tensioning element 130.
  • the tensioning element 130 is shared by the three entrance frames 108 by extending between the entrance frames 108.
  • multiple tensioning elements 130 could be used, e.g., one tensioning element 130 for each of entrance frames 108.
  • the tensioning element 130 forms a full triangle.
  • tensioning element 130 need not complete the circuit, for example, it may include just two legs of the triangle and remain similarly functional.
  • tensioning element 130 can include a hook or other fastener to fasten and release tensioning element 130 from the entrance frames 108.
  • tensioning element 130 can comprise an elastic material to allow entrance frames 108 to rotate outwardly towards the sides of the trap.
  • FIG. 1 also illustrates a weight bar 140 attached to the floor frame section 104.
  • the weight bar 140 is a thicker gauge than the trap frame 100, and the weight bar 140 is configured in a“Y” shape consisting of three members joined at a middle of the floor surface area.
  • the weight bar 140 is attached to the floor frame section 104 at a perimeter of the floor surface area.
  • Weight bar 140 members may have threaded posts affixed thereto and extending upwardly therefrom.
  • the threaded posts are designed to fit an anode 142 made of zinc or aluminum. The purpose of this anode 142 is to minimize electrolysis created by positively charged salt water moving through the trap while grounded to the sea floor, thereby preventing corrosion of the trap frame 100.
  • FIG. 1 illustrates multiple entrance frames 108 which can attach to multiple entrance meshes, as illustrated in FIG. 3, to form multiple entrances into the crustacean trap. While FIG. 1 illustrates three entrance frames 108, it will be appreciated that any number of entrance frames 108 can be included, for example, the crustacean trap can consist of three, six, nine, or twelve entrance frames 108 in various alternative embodiments.
  • FIG. 2 provides another view of the example crab trap frame introduced in FIG. 1, in accordance with various aspects and embodiments of the subject disclosure. Repetitive description of like elements is omitted for the sake of brevity.
  • FIG. 2 illustrates an open lid 150 and a threaded post 202 extending from the weight bar 140.
  • the anode 142 can comprise a threaded hole to screw and unscrew the anode 142 on the threaded post 202. While the example threaded post 202 extends from the middle of the weight bar 140, the threaded post 202 can be positioned anywhere on weight bar 140.
  • embodiments can include multiple threaded posts 202 for multiple anodes 142.
  • FIG. 3 illustrates the example crab trap frame introduced in FIG. 1, along with example entrance meshes installed at entrances thereof, in accordance with various aspects and embodiments of the subject disclosure. Repetitive description of like elements is omitted for the sake of brevity.
  • the illustrated entrance meshes each comprise an upper mesh 302 having relatively larger mesh openings, and a lower mesh 304 having relatively smaller mesh openings.
  • the smaller openings of the lower mesh 304 e.g., a one and a half (1.5) inch mesh, can facilitate travel over lower mesh 304 by crabs.
  • the larger openings of the upper mesh 302, e.g., a four (4) inch mesh can comprise a same mesh as used for the floor mesh, ceiling mesh, and side mesh.
  • the illustrated entrance meshes extend inwardly from respective portions of the tapered side of the trap frame 100. Inward ends of the respective entrance meshes are attached to respective entrance frames 108 as well as the crossbar elements of respective support stmts 116. Outward ends of the respective entrance meshes attach to respective portions of the trap frame 100.
  • FIG. 3 illustrates how the tensioning element 130 can be countered by tension in the entrance meshes in order to hold the entrance frames 108 upright. Release of the tensioning element 130 can allow the entrance frames 108 to rotate outward toward the tapered side of the trap frame 100.
  • FIG. 4 illustrates the example crab trap frame introduced in FIG. 1, along with example side and floor mesh installed thereon, in accordance with various aspects and embodiments of the subject disclosure. Repetitive description of like elements is omitted for the sake of brevity.
  • FIG. 4 includes a floor mesh 404 extending over the floor surface area of the trap frame 100, and a side mesh 402 extending over a first portion of the tapered side, wherein additional side mesh panels extend over additional portions of the tapered side.
  • side mesh 402 extends over a first portion of the tapered side, and a second portion of the tapered side, immediately to the right of side mesh 402, is used for an entrance mesh extending inwardly from the second portion of the tapered side. Additional portions of the tapered side are used for additional side mesh panels and additional entrances.
  • FIG. 5 illustrates an example first complete crab trap in accordance with various aspects and embodiments of the subject disclosure. Repetitive description of like elements is omitted for the sake of brevity.
  • First complete crab trap 500 includes the trap frame introduced in FIG. 1, along with the other elements from FIGS. 1-4 and a first example ceiling mesh 502 installed thereon.
  • the ceiling mesh 502 comprises a web of flexible cord extending between the lid 150 and a back portion of the ceiling frame section 102. When the lid 150 is closed, the ceiling mesh 502 extends over the entire ceiling surface area. When the lid 150 is open, the ceiling mesh 502 extends over half of the ceiling surface area, allowing for easy access to the interior of the crab trap.
  • FIG. 5 illustrates an example first complete crab trap in accordance with various aspects and embodiments of the subject disclosure. Repetitive description of like elements is omitted for the sake of brevity.
  • the ceiling mesh 502 comprises a web of flexible cord extending between the lid 150 and a back portion of the ceiling frame section 102.
  • Second complete crab trap 600 includes the trap frame introduced in FIG. 1, along with the other elements from FIGS. 1-4 and a second example ceiling mesh 602 installed thereon.
  • the ceiling mesh 602 comprises a web of flexible cord extending between the lid 150 and a back portion of the ceiling frame section 102.
  • the ceiling mesh 602 is furthermore releasable to allow nested stacking of multiple crustacean traps, and the ceiling mesh 602 is restorable for crustacean trap deployment.
  • a drawstring 604 also referred to as a purse string, can be tightened to draw the ceiling mesh 602 together in the middle thereof.
  • the drawstring 604 can then be pulled around the ceiling frame section 102 and secured, e.g., by a hook, to the ceiling mesh 602, in order to secure the ceiling mesh 602 in a restored configuration for fishing.
  • the drawstring 604 can be released to loosen the middle of the ceiling mesh 602, allowing the ceiling mesh 602 to collapse into the crustacean trap to facilitate nested stacking of multiple traps.
  • FIG. 6 furthermore illustrates a lid securing device 606 to secure the lid 150 in a closed position.
  • the lid securing device 606 comprises an elastic band attached to the ceiling frame section 102 and fitted with a hook, wherein the elastic band extends over the lid 150 and the hook attaches to the ceiling mesh 602 to secure the lid 150 in a closed position.
  • the lid securing device 606 comprises two leg members which attach to the lid 150, and a third leg member which attaches to the two leg members and includes the hook to attach to the ceiling mesh 602.
  • the illustrated elastic band can be replaced by numerous other means to hold the lid 150 closed, as will be appreciated.
  • a lid securing device 606 can comprise, e.g., a rubber band or rubber inner tube, or a stainless steel, coated steel, or plastic hook or clip, or a twine made of cotton, nylon, poly, or spectra.
  • the meshes may be made of any suitable material, e.g., a poly, nylon, spectra, PVC coated wire, stainless steel, or other web material. While ceiling meshes and entrance meshes are preferably made of flexible materials to allow for nested stacking, floor meshes and side meshes can be rigid. Some portion of the mesh on a trap, e.g., a portion of the ceiling or side mesh, may comprise a cotton panel which will eventually dissolve in seawater to allow escape from the traps, in the event that a trap is lost or otherwise left on the sea floor.
  • a suitable material e.g., a poly, nylon, spectra, PVC coated wire, stainless steel, or other web material. While ceiling meshes and entrance meshes are preferably made of flexible materials to allow for nested stacking, floor meshes and side meshes can be rigid. Some portion of the mesh on a trap, e.g., a portion of the ceiling or side mesh, may comprise a cotton panel which will eventually dissolve
  • FIG. 7 illustrates nested stacking of multiple crustacean traps, in accordance with various aspects and embodiments of the subject disclosure.
  • FIG. 7 includes multiple crustacean traps 701, 702, 703, 704, 705, and 706.
  • Crustacean trap 701 is nested inside crustacean trap 702
  • crustacean trap 702 is nested inside crustacean trap 703
  • crustacean trap 703 is nested inside crustacean trap 704, and so on.
  • the tapered sides of crustacean traps 701, 702, 703, 704, 705, and 706 allow the traps to stack in the illustrated nested fashion. Nested stacking increases the number of traps that can be carried on a fishing boat, thereby improving efficiency of fishing operations.
  • FIG. 7 uses the crab traps of FIGS. 1-6 as an example, the prawn and shrimp traps of FIGS. 8-10 allow for nested stacking in similar fashion.
  • FIG. 8 illustrates an example prawn and shrimp trap, as an example of a crustacean trap in accordance with various aspects and embodiments of the subject disclosure.
  • the elements of the prawn and shrimp trap 800 are generally similar to those of the crab trap illustrated in FIGS. 1-6, and similar materials and design considerations can be used.
  • the ceiling mesh is omitted from prawn and shrimp trap 800 in FIG. 8 in order to more clearly depict the other elements thereof.
  • the prawn and shrimp trap 800 comprises a trap frame comprising: a floor frame section 804 defining a floor surface area, and a ceiling frame section 802 defining a ceiling surface area, wherein the ceiling surface area is larger than the floor surface area.
  • the illustrated floor frame section 804 and ceiling frame section 802 are circular, however, other shapes such as rectangles and polygons can be used in other embodiments.
  • a plurality of angled stmts 806 connect the floor frame section 804 to the ceiling frame section 802 and define a tapered side between the floor frame section 804 and the ceiling frame section 802.
  • the trap frame for prawn and shrimp trap 800 further includes a middle frame section 806, positioned between the floor frame section 804 and the ceiling frame section 802, and defining a middle surface area between the floor surface area and the ceiling surface area.
  • middle frame section 806 is positioned below the midpoint between the floor frame section 804 and the ceiling frame section 802.
  • the prawn and shrimp trap 800 can comprise a weight bar 840, a floor mesh 826 extending over the floor surface area, and a side mesh 824 extending over portions of the tapered side, similar to the crab trap illustrated in FIGS. 1-6. However, in the illustrated embodiment, below the middle frame section 806 the side mesh 824 extends completely around the tapered side of the prawn and shrimp trap 800, because the entrances are in portions of the tapered side that are above the middle frame section 806.
  • Entrance meshes 822 extend inwardly from respective portions of the trap frame to respective entrance frames 810. Entrance meshes 822 are wider at the tapered side, and become narrower as they extend to entrance frames 810.
  • the entrance frames 810 are attached to the entrance meshes 822 and form entrances into the crustacean trap 800. Unlike the crab trap design, the entrance frames 810 for the prawn and shrimp trap 800 are free floating by remaining unattached to any rigid support stmts.
  • Tensioning elements 830 can pull the entrance frames 810 inwardly, countered by tension from the entrance meshes 822, to hold the entrance frames 810 in their fishing positions.
  • Tensioning elements 830 can be releasable, e.g., by hooking or otherwise releasably fastening to entrance frames 810, to allow the entrance frames 810 to collapse by releasing tension on the entrance meshes 822, to facilitate nested stacking of multiple crustacean traps.
  • prawn and shrimp trap 800 illustrated in FIG. 8 comprises three entrance meshes 822, it will be appreciated that larger and smaller embodiments can be made. For example, versions with six, nine, twelve, or another number of entrances can be made according to the principles disclosed herein.
  • FIG. 9 illustrates an elevation view of the example prawn and shrimp trap introduced in FIG. 8, in accordance with various aspects and embodiments of the subject disclosure. Repetitive description of like elements is omitted for the sake of brevity.
  • FIG. 9 illustrates a sewing line 902 to sew mesh onto the trap frame.
  • the meshes disclosed herein can be tied, sewn, or otherwise attached to the trap frame.
  • FIG. 10 illustrates the example prawn and shrimp trap introduced in FIG. 8, and further comprising a collapsible ceiling mesh, in accordance with various aspects and embodiments of the subject disclosure. Repetitive description of like elements is omitted for the sake of brevity.
  • a ceiling mesh 1002 extends over the ceiling surface area of the prawn and shrimp trap 800.
  • the ceiling mesh 1002 is releasable to allow nested stacking of multiple crustacean traps, and the ceiling mesh 1002 is restorable for crustacean trap deployment.
  • a drawstring 1004 similar to the drawstring 604 illustrated in FIG. 6, can be tightened to draw the ceiling mesh 1002 together in the middle thereof.
  • the drawstring 1004 can then be pulled around the ceiling frame section 802 and secured, e.g., by a hook, to the ceiling mesh 1002, in order to secure the ceiling mesh 1002 in a restored configuration for fishing.
  • the drawstring 1004 can be released to loosen the middle of the ceiling mesh 1002, allowing the ceiling mesh 1002 to collapse into the crustacean trap to facilitate nested stacking of multiple traps.
  • Example dimensions may be, e.g., two to six feet in diameter.
  • Example shapes may be circular as shown herein, or oval, square, rectangular or triangular.
  • Example weights may be six to one hundred twenty (120) pounds, most of which is determined by dimensions and frame sizing.
  • Frame joints may be welded or cast, or held together with bolts or other fasteners.
  • the number of entrance frames may vary, e.g., from one to twelve entrance frames.
  • steps may generally include the following. While these steps may be performed in the described sequence, the sequence can also be modified as will be appreciated. Also, some of the steps may be omitted in connection with manufacturing some embodiments, e.g., fewer steps may be needed to manufacture the simpler prawn and shrimp embodiments disclosed herein.
  • the frame can be constructed of steel or other material as disclosed herein.
  • Floor and ceiling frame sections can be made in their different sizes and welded together with angled stmts to form a conical shape.
  • the weight bar can then be added to the frame.
  • the weight bar may be“Y” shaped or for example a double cross bar ranging in weight, length and thickness of steel from one to one hundred twenty (120) pounds depending on the application (lighter for sport applications or heavier for ocean commercial applications).
  • the escape rings may then be attached, typically no less than two and up to six escape rings, for faster release of small crabs and made from the same materials as the frame.
  • the entrance frames can be constructed of the same materials as the frame. Construction can comprise bending or shaping stainless steel or other materials, and attaching entrance frames with hinges such as swivel joints to allow rotation of the entrance frames. Once the entrance frames are made and optionally attached, the upper and lower entrance meshes can be attached. Side mesh can then be installed, including tapered panels between entrances and escape rings. Panels of webbing may be sewn or attached. The floor mesh may then be attached, by sewing or attaching mesh to the floor frame section.
  • the one-way gate members can be installed by fitting them on the entrance frames.
  • One-way gate members may be single or double and made of stainless or coated steel.
  • the lid can be attached to the frame.
  • the lid can be fitted and the lid hinges can be welded to the ceiling frame section so that the lid can open manually by the operator of the trap.
  • the lid can be closed and secured in its operating position with the lid securing device 606.
  • the collapsing ceiling mesh can be attached to the trap by sewing or attaching half to ceiling frame section, and half to the lid.
  • the collapsing ceiling mesh can be drawn closed by a purse string closure in the center of the top most portion of the trap.
  • An elastic material such as bungee cord, rubber inner tube or rubber band and a plastic, stainless or coated steel hook or snap may be used on the end of the purse string to secure the collapsing ceiling mesh in the closed (restored) position during operation or unsecured / relaxed position for nesting the traps.
  • a dissolving panel of cotton or other material can be attached a mesh section of the trap.
  • methods may include releasing the ceiling mesh drawstring and the entrance frame tensioning element to collapse the ceiling mesh and entrance frames.
  • the traps can then be stacked in a nested fashion.
  • the traps can be unstacked and the ceiling mesh can be restored to its tightened position by pulling the drawstring tight and fastening the drawstring in a closed position.
  • the lid may be opened, and the tensioning element(s) can be restored to restore the entrance frames in their fishing positions.
  • Bait may be attached inside the traps, e.g., to the tensioning elements.
  • the lid may be closed and fastened shut using the lid securing device. With a line and buoy attached to the trap, the trap is now ready to fish.
  • the trap may be dropped overboard and the weight bar and tapered sides will guarantee that the trap lands on the sea floor in the correct upright position.

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Abstract

Crustacean traps disclosed herein can be used for trapping crustaceans such as crab, prawns and shrimp. The traps can include a trap frame surrounded by mesh. The trap frame can include a tapered side which allows nested stacking of traps. The mesh can include floor mesh, side mesh, entrance mesh, and ceiling mesh. The entrance mesh can extend inwardly from a portion of the tapered side, and attach to an entrance frame. A tensioning element may hole the entrance frame upright inside the trap. The ceiling mesh and the tensioning element can be releasable to collapse the ceiling and the entrances, thereby facilitating nested stacking of the crustacean traps.

Description

PATENT APPLICATION
CRUSTACEAN TRAP
Inventor: Erick Bendure
CROSS REFERENCE TO RELATED APPLICATION
[0001] Priority is claimed U.S. Provisional Patent Application No. 62/719,822, filed Aug. 20, 2018 and entitled“CRAB POT,” the entirety of which is hereby incorporated by reference.
BACKGROUND
[0002] Crustacean traps, such as crab, prawn, and shrimp traps, are devices which are dropped off of fishing boats to the sea floor in order to catch crustaceans. A variety of crustacean trap designs have been developed.
[0003] The basic elements of a crab trap, also referred to as a crab pot, generally include a cage with hinged doors that open inward only. Bait is fastened inside the cage. Crabs push the doors open to enter the cage, and the crabs become trapped inside when they are subsequently unable to push the doors outward. A long line is attached at the top of the cage, and a buoy is tied to an opposite end of the line. The buoy floats at the water’s surface while the crab pot is left on the sea floor for a period of time. Prawn and shrimp traps are similar to crab traps, in that they are generally configured as cages that sink to the sea floor, and which have entrances that are more easily entered than exited.
[0004] Fishermen generally load multiple crab or prawn/shrimp traps on a boat, sail to their fishing grounds, bait the traps, and drop them overboard in various locations. The fishermen may then return to shore to retrieve additional traps as desired, repeating the operation as needed to deploy the desired number of traps. They then return to the traps, pull them back to the surface, and retrieve any crustaceans trapped inside. They may again make several trips as needed to return the traps to shore or to the next fishing grounds.
[0005] Crustacean fishing is labor intensive, and there there is a need in the industry for improved trap designs which can improve the efficiency and effectiveness of crustacean fishing operations.
SUMMARY
[0006] This disclosure presents improved crustacean traps along with methods of manufacturing and using the improved traps. In some examples, an improved crustacean trap may comprise a trap frame. The trap frame can include a floor frame section and a ceiling frame section. The surface area of the ceiling frame section can be larger than the surface area of the floor frame section. A plurality of angled stmts can connect the floor frame section to the ceiling frame section. The angled struts define a tapered or angled side between the floor frame section and the ceiling frame section.
[0007] The trap frame may be surrounded with mesh, including a floor mesh extending over the floor surface area, a side mesh extending over portions of the tapered side, and a ceiling mesh extending over the ceiling surface area. One or more entrances through the tapered side can comprise an entrance mesh extending inwardly from a portion of the tapered side to an entrance frame. The entrance frame can be movable with respect to the trap frame, as described further herein.
[0008] The disclosed crustacean traps can allow nested stacking of multiple crustacean traps. First, the tapered sides of the crustacean traps allow nested stacking of traps. Second, the ceiling mesh can be releasable to allow nested stacking of multiple crustacean traps, and the ceiling mesh can be restorable for crustacean trap deployment. Third, entrance frames can also be movable or collapsible to facilitate nested stacking. A tensioning element can pull the entrance frames inwardly to hold the entrance frames in place for fishing. The tensioning element can be released to allow the entrance frames to rotate, collapse or otherwise or move aside for nested stacking. Further aspects of the invention are described in detail below.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Various features and attendant advantages of the disclosed technologies will become fully appreciated when considered in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the several views, and wherein:
[0010] FIG. 1 illustrates an example crab trap frame, as one example of a crustacean trap frame, along with entrance frames, a tensioning element and a weight bar.
[0011] FIG. 2 provides another view of the example crab trap frame introduced in FIG.
1.
[0012] FIG. 3 illustrates the example crab trap frame introduced in FIG. 1, along with example entrance meshes installed at entrances thereof.
[0013] FIG. 4 illustrates the example crab trap frame introduced in FIG. 1, along with example side and floor mesh installed thereon.
[0014] FIG. 5 illustrates an example first complete crab trap.
[0015] FIG. 6 illustrates an example second complete crab trap.
[0016] FIG. 7 illustrates nested stacking of multiple crustacean traps. [0017] FIG. 8 illustrates an example prawn and shrimp trap.
[0018] FIG. 9 illustrates an elevation view of the example prawn and shrimp trap introduced in FIG. 8.
[0019] FIG. 10 illustrates the example prawn and shrimp trap introduced in FIG. 8, and further comprising a collapsible ceiling mesh.
DETAILED DESCRIPTION
[0020] Prior to explaining embodiments of the invention in detail, it is to be understood that this disclosure is not limited to the details of construction or arrangements of the
components and method steps set forth in the following description or illustrated in the drawings. Embodiments of this disclosure are capable of other embodiments and of being practiced and carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein are for the purpose of the description and should not be regarded as limiting.
[0021] FIG. 1 illustrates an example crab trap frame, as one example of a crustacean trap frame, and FIG. 1 further illustrates entrance frames, a tensioning element and a weight bar, in accordance with various aspects and embodiments of the subject disclosure. The trap frame 100 may be made, e.g., of stainless steel, rubber coated mild steel, Polly Vinyl Chloride (PVC) coated steel, or other suitably rigid and corrosion resistant material. The trap frame 100 includes a floor frame section 104 defining a floor surface area. The term“surface area” as used herein does not necessarily imply the presence of a surface, but can be simply the area defined by the surrounding element. In the illustrated embodiment, the floor frame section 104 includes a circular ring at the bottom of the trap frame 100. The trap frame 100 further includes a ceiling frame section 102 defining a ceiling surface area which is larger than the floor surface area. In the illustrated embodiment, the ceiling frame section 102 includes a circular ring at the top of the trap frame 100.
[0022] The trap frame 100 further includes a plurality of angled stmts, such as example angled stmt 106 and example angled strut 122, which connect the floor frame section 104 to the ceiling frame section 102 and define a tapered side between the floor frame section 104 and the ceiling frame section 102. In the illustrated embodiment, there are nine (9) angled struts, although more or fewer angled struts may be appropriate for other embodiments. The tapered side between the floor frame section 104 and the ceiling frame section 102 comprises an outer “surface” of the conical shape defined by the trap frame 100 - although again, there is not necessarily any actual material surface, as will be understood from FIG. 1. In some
embodiments, an angle at which the angled stmts connect to the floor frame section and the ceiling frame section can comprise, e.g., a ten to twenty degree angle, for example, a fifteen degree angle, as measured from vectors extending normal (perpendicular) from the floor surface area or ceiling surface area, respectively.
[0023] Circular“escape rings” 120 are attached between some of the angled stmts. By law, crab traps must have at least two escape rings of four and one quarter (4.25) inches in size, located in the top half of the crab trap. As an optional additional feature, crossbars 118 can extend between angled stmts, as shown, to form escape windows for undersize crabs. The escape windows can be over the entrances to the crustacean trap, as shown. Vertical elements 119 can optionally divide escape windows into multiple sections as desired.
[0024] A lid 150 can be attached to the trap frame 100, e.g., by hinge elements 152.
The lid 150 can be semicircular and openable and closable to access an interior of the cmstacean trap without releasing a ceiling mesh. The releasable ceiling mesh is discussed further in connection with FIG. 6.
[0025] Entrance frames 108 can also optionally be attached to the trap frame 100. In the illustrated embodiment, entrance frames 108 are attached by entrance frame hinge elements 110 to support struts 116, and support struts 116 are welded to the trap frame 100. Support struts 116 can include elements extending inwardly from the trap frame 100 into the cmstacean trap, as shown. Support struts 116 can optionally be vertically braced to angled stmts, as shown. Support stmts 116 can include crossbar elements that support the hinge elements 110, as shown. Entrance frames 108 can rotate forward and backward on the support stmts 116, thereby allowing entrance frames 108 to rotate up for fishing, and down for nested stacking of traps. In another example embodiment, entrance frames need not be attached to the trap frame, for example as illustrated in FIG. 8.
[0026] In the illustrated embodiment, one-way gates 112 are attached by gate hinges 114 to the entrance frames 108. The illustrated one-way gates 112 comprise“U” shaped metal elements with arms that extend downwardly below the crossbar elements of support struts 116, so that the one-way gates 112 can swing inwardly into the trap, but cannot swing outwardly.
[0027] FIG. 1 furthermore illustrates a tensioning element 130. The tensioning element 130 can comprise, e.g., a wire, a line, a twine, a cord fitted with a coil spring, or an elastic element such as a bungee cord, secured to the entrance frames 108, in order to pull the entrance frames 108 inwardly. The tension applied by tensioning element 130 is countered by tension applied in an opposite direction by entrance mesh, as shown for example in FIG. 3. The entrance frames 108 can be held upright by the tensioning element 130 and the entrance mesh. In some embodiments, springs may be used to bias the entrance frames 108 into either a vertical (restored) or horizontal (collapsed) position. The tensioning element 130 can be releasable to allow the entrance frames 108 to collapse by rotating on the entrance frame hinge elements 110, to facilitate nested stacking of multiple crustacean traps. Bait may be conveniently zip-tied or otherwise attached to the tensioning element 130.
[0028] In the illustrated embodiment, the tensioning element 130 is shared by the three entrance frames 108 by extending between the entrance frames 108. Alternatively, multiple tensioning elements 130 could be used, e.g., one tensioning element 130 for each of entrance frames 108. Furthermore, in the illustrated embodiment, the tensioning element 130 forms a full triangle. In some embodiments, tensioning element 130 need not complete the circuit, for example, it may include just two legs of the triangle and remain similarly functional. In some embodiments, tensioning element 130 can include a hook or other fastener to fasten and release tensioning element 130 from the entrance frames 108. Alternatively, tensioning element 130 can comprise an elastic material to allow entrance frames 108 to rotate outwardly towards the sides of the trap.
[0029] FIG. 1 also illustrates a weight bar 140 attached to the floor frame section 104. In the illustrated embodiment, the weight bar 140 is a thicker gauge than the trap frame 100, and the weight bar 140 is configured in a“Y” shape consisting of three members joined at a middle of the floor surface area. The weight bar 140 is attached to the floor frame section 104 at a perimeter of the floor surface area. Weight bar 140 members may have threaded posts affixed thereto and extending upwardly therefrom. The threaded posts are designed to fit an anode 142 made of zinc or aluminum. The purpose of this anode 142 is to minimize electrolysis created by positively charged salt water moving through the trap while grounded to the sea floor, thereby preventing corrosion of the trap frame 100.
[0030] FIG. 1 illustrates multiple entrance frames 108 which can attach to multiple entrance meshes, as illustrated in FIG. 3, to form multiple entrances into the crustacean trap. While FIG. 1 illustrates three entrance frames 108, it will be appreciated that any number of entrance frames 108 can be included, for example, the crustacean trap can consist of three, six, nine, or twelve entrance frames 108 in various alternative embodiments.
[0031] FIG. 2 provides another view of the example crab trap frame introduced in FIG. 1, in accordance with various aspects and embodiments of the subject disclosure. Repetitive description of like elements is omitted for the sake of brevity. FIG. 2 illustrates an open lid 150 and a threaded post 202 extending from the weight bar 140. The anode 142 can comprise a threaded hole to screw and unscrew the anode 142 on the threaded post 202. While the example threaded post 202 extends from the middle of the weight bar 140, the threaded post 202 can be positioned anywhere on weight bar 140. Furthermore, embodiments can include multiple threaded posts 202 for multiple anodes 142. The threaded post 202 is one example fastener to fasten an anode 140 to the trap, other fasteners may be used in other embodiments. [0032] FIG. 3 illustrates the example crab trap frame introduced in FIG. 1, along with example entrance meshes installed at entrances thereof, in accordance with various aspects and embodiments of the subject disclosure. Repetitive description of like elements is omitted for the sake of brevity. The illustrated entrance meshes each comprise an upper mesh 302 having relatively larger mesh openings, and a lower mesh 304 having relatively smaller mesh openings. The smaller openings of the lower mesh 304, e.g., a one and a half (1.5) inch mesh, can facilitate travel over lower mesh 304 by crabs. The larger openings of the upper mesh 302, e.g., a four (4) inch mesh, can comprise a same mesh as used for the floor mesh, ceiling mesh, and side mesh.
[0033] The illustrated entrance meshes extend inwardly from respective portions of the tapered side of the trap frame 100. Inward ends of the respective entrance meshes are attached to respective entrance frames 108 as well as the crossbar elements of respective support stmts 116. Outward ends of the respective entrance meshes attach to respective portions of the trap frame 100. FIG. 3 illustrates how the tensioning element 130 can be countered by tension in the entrance meshes in order to hold the entrance frames 108 upright. Release of the tensioning element 130 can allow the entrance frames 108 to rotate outward toward the tapered side of the trap frame 100.
[0034] FIG. 4 illustrates the example crab trap frame introduced in FIG. 1, along with example side and floor mesh installed thereon, in accordance with various aspects and embodiments of the subject disclosure. Repetitive description of like elements is omitted for the sake of brevity. FIG. 4 includes a floor mesh 404 extending over the floor surface area of the trap frame 100, and a side mesh 402 extending over a first portion of the tapered side, wherein additional side mesh panels extend over additional portions of the tapered side. In FIG. 4, side mesh 402 extends over a first portion of the tapered side, and a second portion of the tapered side, immediately to the right of side mesh 402, is used for an entrance mesh extending inwardly from the second portion of the tapered side. Additional portions of the tapered side are used for additional side mesh panels and additional entrances.
[0035] FIG. 5 illustrates an example first complete crab trap in accordance with various aspects and embodiments of the subject disclosure. Repetitive description of like elements is omitted for the sake of brevity. First complete crab trap 500 includes the trap frame introduced in FIG. 1, along with the other elements from FIGS. 1-4 and a first example ceiling mesh 502 installed thereon. In FIG. 5, the ceiling mesh 502 comprises a web of flexible cord extending between the lid 150 and a back portion of the ceiling frame section 102. When the lid 150 is closed, the ceiling mesh 502 extends over the entire ceiling surface area. When the lid 150 is open, the ceiling mesh 502 extends over half of the ceiling surface area, allowing for easy access to the interior of the crab trap. [0036] FIG. 6 illustrates an example second complete crab trap in accordance with various aspects and embodiments of the subject disclosure. Repetitive description of like elements is omitted for the sake of brevity. Second complete crab trap 600 includes the trap frame introduced in FIG. 1, along with the other elements from FIGS. 1-4 and a second example ceiling mesh 602 installed thereon. Like the ceiling mesh 502, the ceiling mesh 602 comprises a web of flexible cord extending between the lid 150 and a back portion of the ceiling frame section 102. The ceiling mesh 602 is furthermore releasable to allow nested stacking of multiple crustacean traps, and the ceiling mesh 602 is restorable for crustacean trap deployment. In the illustrated embodiment, a drawstring 604, also referred to as a purse string, can be tightened to draw the ceiling mesh 602 together in the middle thereof. The drawstring 604 can then be pulled around the ceiling frame section 102 and secured, e.g., by a hook, to the ceiling mesh 602, in order to secure the ceiling mesh 602 in a restored configuration for fishing. The drawstring 604 can be released to loosen the middle of the ceiling mesh 602, allowing the ceiling mesh 602 to collapse into the crustacean trap to facilitate nested stacking of multiple traps.
[0037] FIG. 6 furthermore illustrates a lid securing device 606 to secure the lid 150 in a closed position. In the illustrated embodiment, the lid securing device 606 comprises an elastic band attached to the ceiling frame section 102 and fitted with a hook, wherein the elastic band extends over the lid 150 and the hook attaches to the ceiling mesh 602 to secure the lid 150 in a closed position. In the illustrated embodiment, the lid securing device 606 comprises two leg members which attach to the lid 150, and a third leg member which attaches to the two leg members and includes the hook to attach to the ceiling mesh 602. The illustrated elastic band can be replaced by numerous other means to hold the lid 150 closed, as will be appreciated. A lid securing device 606 can comprise, e.g., a rubber band or rubber inner tube, or a stainless steel, coated steel, or plastic hook or clip, or a twine made of cotton, nylon, poly, or spectra.
[0038] With regard to meshes for use with the traps disclosed herein, the meshes may be made of any suitable material, e.g., a poly, nylon, spectra, PVC coated wire, stainless steel, or other web material. While ceiling meshes and entrance meshes are preferably made of flexible materials to allow for nested stacking, floor meshes and side meshes can be rigid. Some portion of the mesh on a trap, e.g., a portion of the ceiling or side mesh, may comprise a cotton panel which will eventually dissolve in seawater to allow escape from the traps, in the event that a trap is lost or otherwise left on the sea floor.
[0039] FIG. 7 illustrates nested stacking of multiple crustacean traps, in accordance with various aspects and embodiments of the subject disclosure. FIG. 7 includes multiple crustacean traps 701, 702, 703, 704, 705, and 706. Crustacean trap 701 is nested inside crustacean trap 702, crustacean trap 702 is nested inside crustacean trap 703, crustacean trap 703 is nested inside crustacean trap 704, and so on. As will be appreciated, the tapered sides of crustacean traps 701, 702, 703, 704, 705, and 706 allow the traps to stack in the illustrated nested fashion. Nested stacking increases the number of traps that can be carried on a fishing boat, thereby improving efficiency of fishing operations. The mesh portions of the crustacean traps 701, 702, 703, 704, 705, and 706 are not included in FIG. 7 for clarity of illustration. While FIG. 7 uses the crab traps of FIGS. 1-6 as an example, the prawn and shrimp traps of FIGS. 8-10 allow for nested stacking in similar fashion.
[0040] FIG. 8 illustrates an example prawn and shrimp trap, as an example of a crustacean trap in accordance with various aspects and embodiments of the subject disclosure. The elements of the prawn and shrimp trap 800 are generally similar to those of the crab trap illustrated in FIGS. 1-6, and similar materials and design considerations can be used. The ceiling mesh is omitted from prawn and shrimp trap 800 in FIG. 8 in order to more clearly depict the other elements thereof.
[0041] Similar to the crab trap illustrated in FIGS. 1-6, the prawn and shrimp trap 800 comprises a trap frame comprising: a floor frame section 804 defining a floor surface area, and a ceiling frame section 802 defining a ceiling surface area, wherein the ceiling surface area is larger than the floor surface area. The illustrated floor frame section 804 and ceiling frame section 802 are circular, however, other shapes such as rectangles and polygons can be used in other embodiments. A plurality of angled stmts 806 connect the floor frame section 804 to the ceiling frame section 802 and define a tapered side between the floor frame section 804 and the ceiling frame section 802.
[0042] The trap frame for prawn and shrimp trap 800 further includes a middle frame section 806, positioned between the floor frame section 804 and the ceiling frame section 802, and defining a middle surface area between the floor surface area and the ceiling surface area. In the illustrated embodiment, middle frame section 806 is positioned below the midpoint between the floor frame section 804 and the ceiling frame section 802.
[0043] The prawn and shrimp trap 800 can comprise a weight bar 840, a floor mesh 826 extending over the floor surface area, and a side mesh 824 extending over portions of the tapered side, similar to the crab trap illustrated in FIGS. 1-6. However, in the illustrated embodiment, below the middle frame section 806 the side mesh 824 extends completely around the tapered side of the prawn and shrimp trap 800, because the entrances are in portions of the tapered side that are above the middle frame section 806.
[0044] Entrance meshes 822 extend inwardly from respective portions of the trap frame to respective entrance frames 810. Entrance meshes 822 are wider at the tapered side, and become narrower as they extend to entrance frames 810. The entrance frames 810 are attached to the entrance meshes 822 and form entrances into the crustacean trap 800. Unlike the crab trap design, the entrance frames 810 for the prawn and shrimp trap 800 are free floating by remaining unattached to any rigid support stmts. Tensioning elements 830 can pull the entrance frames 810 inwardly, countered by tension from the entrance meshes 822, to hold the entrance frames 810 in their fishing positions. Tensioning elements 830 can be releasable, e.g., by hooking or otherwise releasably fastening to entrance frames 810, to allow the entrance frames 810 to collapse by releasing tension on the entrance meshes 822, to facilitate nested stacking of multiple crustacean traps.
[0045] While the prawn and shrimp trap 800 illustrated in FIG. 8 comprises three entrance meshes 822, it will be appreciated that larger and smaller embodiments can be made. For example, versions with six, nine, twelve, or another number of entrances can be made according to the principles disclosed herein.
[0046] FIG. 9 illustrates an elevation view of the example prawn and shrimp trap introduced in FIG. 8, in accordance with various aspects and embodiments of the subject disclosure. Repetitive description of like elements is omitted for the sake of brevity. FIG. 9 illustrates a sewing line 902 to sew mesh onto the trap frame. In general, the meshes disclosed herein can be tied, sewn, or otherwise attached to the trap frame.
[0047] FIG. 10 illustrates the example prawn and shrimp trap introduced in FIG. 8, and further comprising a collapsible ceiling mesh, in accordance with various aspects and embodiments of the subject disclosure. Repetitive description of like elements is omitted for the sake of brevity. In FIG. 10, a ceiling mesh 1002 extends over the ceiling surface area of the prawn and shrimp trap 800. The ceiling mesh 1002 is releasable to allow nested stacking of multiple crustacean traps, and the ceiling mesh 1002 is restorable for crustacean trap deployment.
[0048] In the illustrated embodiment, a drawstring 1004, similar to the drawstring 604 illustrated in FIG. 6, can be tightened to draw the ceiling mesh 1002 together in the middle thereof. The drawstring 1004 can then be pulled around the ceiling frame section 802 and secured, e.g., by a hook, to the ceiling mesh 1002, in order to secure the ceiling mesh 1002 in a restored configuration for fishing. The drawstring 1004 can be released to loosen the middle of the ceiling mesh 1002, allowing the ceiling mesh 1002 to collapse into the crustacean trap to facilitate nested stacking of multiple traps.
[0049] The embodiments illustrated herein are examples only, and numerous variations are possible as will be appreciated. Variations in size, shape, and weight may be made. Example dimensions may be, e.g., two to six feet in diameter. Example shapes may be circular as shown herein, or oval, square, rectangular or triangular. Example weights may be six to one hundred twenty (120) pounds, most of which is determined by dimensions and frame sizing. Frame joints may be welded or cast, or held together with bolts or other fasteners. The number of entrance frames may vary, e.g., from one to twelve entrance frames.
[0050] For manufacturing the disclosed crustacean traps, steps may generally include the following. While these steps may be performed in the described sequence, the sequence can also be modified as will be appreciated. Also, some of the steps may be omitted in connection with manufacturing some embodiments, e.g., fewer steps may be needed to manufacture the simpler prawn and shrimp embodiments disclosed herein.
[0051] The frame can be constructed of steel or other material as disclosed herein.
Floor and ceiling frame sections can be made in their different sizes and welded together with angled stmts to form a conical shape. The weight bar can then be added to the frame. The weight bar may be“Y” shaped or for example a double cross bar ranging in weight, length and thickness of steel from one to one hundred twenty (120) pounds depending on the application (lighter for sport applications or heavier for ocean commercial applications). The escape rings may then be attached, typically no less than two and up to six escape rings, for faster release of small crabs and made from the same materials as the frame.
[0052] The entrance frames can be constructed of the same materials as the frame. Construction can comprise bending or shaping stainless steel or other materials, and attaching entrance frames with hinges such as swivel joints to allow rotation of the entrance frames. Once the entrance frames are made and optionally attached, the upper and lower entrance meshes can be attached. Side mesh can then be installed, including tapered panels between entrances and escape rings. Panels of webbing may be sewn or attached. The floor mesh may then be attached, by sewing or attaching mesh to the floor frame section.
[0053] In embodiments comprising one-way gate members, the one-way gate members can be installed by fitting them on the entrance frames. One-way gate members may be single or double and made of stainless or coated steel.
[0054] The lid can be attached to the frame. The lid can be fitted and the lid hinges can be welded to the ceiling frame section so that the lid can open manually by the operator of the trap. The lid can be closed and secured in its operating position with the lid securing device 606.
[0055] The collapsing ceiling mesh can be attached to the trap by sewing or attaching half to ceiling frame section, and half to the lid. The collapsing ceiling mesh can be drawn closed by a purse string closure in the center of the top most portion of the trap. An elastic material such as bungee cord, rubber inner tube or rubber band and a plastic, stainless or coated steel hook or snap may be used on the end of the purse string to secure the collapsing ceiling mesh in the closed (restored) position during operation or unsecured / relaxed position for nesting the traps. [0056] Finally, a dissolving panel of cotton or other material can be attached a mesh section of the trap.
[0057] Methods of using the disclosed crustacean traps will be readily apparent to those of skill in the art. In general, methods may include releasing the ceiling mesh drawstring and the entrance frame tensioning element to collapse the ceiling mesh and entrance frames. The traps can then be stacked in a nested fashion. When restoring the traps for deployment, the traps can be unstacked and the ceiling mesh can be restored to its tightened position by pulling the drawstring tight and fastening the drawstring in a closed position. The lid may be opened, and the tensioning element(s) can be restored to restore the entrance frames in their fishing positions. Bait may be attached inside the traps, e.g., to the tensioning elements. The lid may be closed and fastened shut using the lid securing device. With a line and buoy attached to the trap, the trap is now ready to fish. The trap may be dropped overboard and the weight bar and tapered sides will guarantee that the trap lands on the sea floor in the correct upright position.
[0058] While various embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in art.

Claims

CLAIMS What is claimed is:
1. A crustacean trap, comprising:
a trap frame, comprising:
a floor frame section defining a floor surface area;
a ceiling frame section defining a ceiling surface area, wherein said ceiling surface area is larger than said floor surface area; and
a plurality of angled stmts connecting the floor frame section to the ceiling frame section and defining a tapered side between the floor frame section and the ceiling frame section;
a floor mesh extending over the floor surface area;
a side mesh extending over a first portion of the tapered side;
an entrance mesh extending inwardly from a second portion of the tapered side;
an entrance frame attached to the entrance mesh and forming an entrance into the crustacean trap;
a tensioning element to pull the entrance frame inwardly; and
a ceiling mesh extending over the ceiling surface area, wherein the ceiling mesh is releasable to allow nested stacking of multiple crustacean traps, and wherein the ceiling mesh is restorable for crustacean trap deployment.
2. The crustacean trap of claim 1, wherein the ceiling mesh comprises a web of flexible cord and a drawstring, wherein the drawstring is releasable in order to release the ceiling mesh, and wherein the drawstring is tensioned in order to restore the ceiling mesh.
3. The crustacean trap of claim 1, wherein the ceiling frame section includes a lid, and wherein the lid is openable and closable to access an interior of the crustacean trap without releasing the ceiling mesh.
4. The crustacean trap of claim 3, further comprising an elastic band attached to the ceiling frame section and fitted with a hook, wherein the elastic band extends over the lid and the hook attaches to the ceiling mesh to secure the lid in a closed position.
5. The crustacean trap of claim 1, wherein the entrance frame is attached by an entrance frame hinge element to a support stmt, and wherein the tensioning element is releasable to allow the entrance frame to collapse by rotating on the entrance frame hinge element, to facilitate nested stacking of multiple crustacean traps.
6. The crustacean trap of claim 1, further comprising a one-way gate attached by a gate hinge to the entrance frame.
7. The crustacean trap of claim 1, wherein the entrance frame is free floating by remaining unattached to any rigid support stmt, and wherein the tensioning element is releasable to allow the entrance frame to collapse by releasing tension on the entrance mesh, to facilitate nested stacking of multiple crustacean traps.
8. The crustacean trap of claim 1, wherein the entrance mesh comprises an upper mesh having relatively larger mesh openings, and a lower mesh having relatively smaller mesh openings.
9. The crustacean trap of claim 1, further comprising a weight bar attached to the floor frame section.
10. The crustacean trap of claim 9, further comprising a threaded post affixed to the weight bar, wherein an anode can be screwed onto the threaded post.
11. The crustacean trap of claim 9, wherein the weight bar is configured in a“Y” shape consisting of three members joined at a middle of the floor surface area.
12. The crustacean trap of claim 1, wherein the floor frame section and the ceiling frame section are circular in shape.
13. The crustacean trap of claim 1, wherein the plurality of angled stmts connecting the floor frame section to the ceiling frame section are at ten to twenty degree angles from directions normal to the floor surface area and ceiling surface area.
14. The crustacean trap of claim 1, further comprising multiple entrance frames attached to multiple entrance meshes and forming multiple entrances into the crustacean trap.
15. The crustacean trap of claim 14, wherein the tensioning element extends between the multiple entrance frames.
16. The crustacean trap of claim 14, wherein the crustacean trap consists of three, six, nine, or twelve entrance frames.
17. The crustacean trap of claim 1, wherein the trap frame further comprises two or more escape rings.
18. The crustacean trap of claim 1, wherein the trap frame further comprising one or more escape windows.
19. The crustacean trap of claim 1, wherein the trap frame further comprises a middle frame section positioned between the floor frame section and the ceiling frame section.
PCT/US2019/046381 2018-08-20 2019-08-13 Crustacean trap WO2020041044A1 (en)

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NO20220595A1 (en) * 2022-05-20 2023-11-21 Proffteiner As Crab stones and use of the stone

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US20110271584A1 (en) * 2009-11-12 2011-11-10 George Stearns Preconfigurable underwater crustacean trap

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US4706409A (en) * 1986-06-09 1987-11-17 Downing Edgar W Crab pot construction
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US20110271584A1 (en) * 2009-11-12 2011-11-10 George Stearns Preconfigurable underwater crustacean trap

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US20220046905A1 (en) * 2018-12-12 2022-02-17 Innomar As Fish pot
NO20220595A1 (en) * 2022-05-20 2023-11-21 Proffteiner As Crab stones and use of the stone
NO347661B1 (en) * 2022-05-20 2024-02-12 Proffteiner As Crab stones and use of the stone

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