CN111357428A - Chinaberry is planted with digging device - Google Patents

Chinaberry is planted with digging device Download PDF

Info

Publication number
CN111357428A
CN111357428A CN202010257229.9A CN202010257229A CN111357428A CN 111357428 A CN111357428 A CN 111357428A CN 202010257229 A CN202010257229 A CN 202010257229A CN 111357428 A CN111357428 A CN 111357428A
Authority
CN
China
Prior art keywords
fixedly connected
digging
ring
movable
rod
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CN202010257229.9A
Other languages
Chinese (zh)
Other versions
CN111357428B (en
Inventor
孙红
郭琦
傅春民
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mengcheng County Linda Agriculture Co ltd
Original Assignee
Mengcheng County Linda Agriculture Co ltd
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 Mengcheng County Linda Agriculture Co ltd filed Critical Mengcheng County Linda Agriculture Co ltd
Priority to CN202010257229.9A priority Critical patent/CN111357428B/en
Publication of CN111357428A publication Critical patent/CN111357428A/en
Application granted granted Critical
Publication of CN111357428B publication Critical patent/CN111357428B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01CPLANTING; SOWING; FERTILISING
    • A01C5/00Making or covering furrows or holes for sowing, planting or manuring
    • A01C5/02Hand tools for making holes for sowing, planting or manuring
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01CPLANTING; SOWING; FERTILISING
    • A01C15/00Fertiliser distributors
    • A01C15/02Fertiliser distributors for hand use

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Transplanting Machines (AREA)
  • Earth Drilling (AREA)

Abstract

The invention relates to the technical field of chinaberry tree planting, and particularly discloses a pit digging device for chinaberry tree planting, which comprises a device bottom ring, wherein the top surface of the device bottom ring is fixedly connected with a supporting rod, the bottom surface of the device bottom ring is provided with a movable wheel, the top surface of the supporting rod is fixedly connected with a control ring, the surface of the control ring is sleeved with a movable pipe through a hinge, and the surface of the movable pipe is sequentially and fixedly connected with a pulling rod and a movable rod from top to bottom; according to the invention, through the digging shovel and the pedal, when the earth needs to be dug, the device can be integrally moved to the ground needing to be dug, the digging shovel is inserted into the earth through the pedal, and after the digging shovel is inserted into the earth, the digging shovel can be driven by the supporting sliding plate to turn up, and then the device can be moved out of the pit, so that a new earth pit can be dug, operators do not need to bend down to dig the pit, and the effects of facilitating digging and reducing the body burden of the operators are achieved.

Description

Chinaberry is planted with digging device
Technical Field
The invention relates to the technical field of chinaberry tree planting, in particular to a pit digging device for chinaberry tree planting.
Background
Melia azedarach is a deciduous tree in Melia of Meliaceae, most of which is distributed in provinces of south of the yellow river in China, and because flowers, leaves, fruits and root barks of Melia azedarach can be used as medicines, people can also cultivate the deciduous Melia azedarach, so that the obtained flowers, leaves, fruits and root barks of Melia azedarach can be used for producing medicaments in daily life of people.
The existing chinaberry seeds need to be cultivated firstly when the existing chinaberry seedlings are planted, after the seedlings grow out, a ditch can be dug in a field to continuously grow the chinaberry seedlings, the chinaberry seedlings are continuously transferred to a new field after the seedlings grow and are cultured for one year, at the moment, a pit with a proper depth needs to be dug to ensure the normal growth of the chinaberry trees, but most people dig the pit through an iron shovel, the people need to continuously bend down to shovel up soil, the burden on the waist is large, and the health of an operator is influenced after long-time work.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the digging device for planting the chinaberry trees, which has the advantages of convenience in digging soil, reduction in the body burden of an operator and the like, and solves the problems that the existing soil shoveling device needs the operator to bend over continuously, the operation is troublesome and the body burden of the operator is large.
The pit digging device for planting the melia azedarach comprises a device bottom ring, wherein a supporting rod is fixedly connected to the top surface of the device bottom ring, a movable wheel is arranged on the bottom surface of the device bottom ring, a control ring is fixedly connected to the top surface of the supporting rod, a movable pipe is sleeved on the surface of the control ring through a hinge, a pulling rod and a movable rod are sequentially and fixedly connected to the surface of the movable pipe from top to bottom, the pulling rod and the movable rod are mutually and fixedly connected through a spring, a soil digging shovel and a stretching rod are respectively and fixedly connected to the ends, far away from the movable pipe, of the pulling rod and the movable rod through hinges, one end, far away from the movable rod, of the stretching rod is fixedly connected to the surface of the soil digging shovel through a hinge, a movable sliding rod is fixedly connected to the bottom surface of the soil digging shovel, a supporting sliding plate is movably connected to one end, far away from the soil digging shovel, of the movable sliding, the surface of the movable pipe is fixedly connected with a driving toothed ring, the surface of the excavating shovel close to the movable slide rod is fixedly connected with a treading frame, and one end of the treading frame far away from the excavating shovel is fixedly connected with a treading plate.
The digging device for planting the chinaberry trees is characterized in that the number of the movable pipes, the digging shovels, the driving gear rings and the supporting sliding plates is two, the two movable pipes, the driving gear rings and the supporting sliding plates are uniformly distributed on the surfaces of the device bottom ring and the control ring by taking a vertical central line on the front surface of the device bottom ring as a symmetrical axis, and the two driving gear rings can drive one digging shovel to move when the other digging shovel is stepped on to move, so that the digging is more convenient and faster.
According to the pit digging device for planting the melia azedarach trees, the surfaces of the two digging shovels are fixedly connected with the shielding plates, the surfaces of the two shielding plates are respectively provided with the inclined planes, and the shielding plates can ensure that the digging shovels are closed more tightly and soil blocks cannot fall off.
The pit digging device for planting the melia azedarach trees comprises a control ring, a support frame, a control rod, a fixed block and a tooth ring, wherein the support frame is fixedly connected to the top surface of the control ring, the control rod is fixedly connected to the surface of the support frame through a rotating shaft and a hinge, the fixed block is fixedly connected to the bottom surface of the control rod, and the bottom surface of the fixed block is provided with a latch matched with the latch on the surface of the tooth ring.
According to the pit digging device for planting the chinaberry trees, the top end of the support frame is fixedly connected with the fertilizer containing box, the surface of the fertilizer containing box is fixedly connected with the T-shaped rod, the front surface of the control rod is L-shaped, and the upper surface of the control rod is movably connected with the surface of the T-shaped rod.
According to the digging device for planting the chinaberry trees, the bottom surface of the fertilizer storage box is communicated with the feeding folding pipe, the surface of the feeding folding pipe is provided with the control valve, the bottom end of the feeding folding pipe extends into a gap between the device bottom ring and the digging shovel, the bottom of the feeding folding pipe and the feeding folding pipe enable a pit hole to be dug on the bottom surface, when soil in the pit hole is taken out of the pit hole, base fertilizer in the fertilizer storage box can be sent into the dug pit hole through the feeding folding pipe, the pit hole can be conveniently and quickly dug, the base fertilizer can be immediately filled into the pit hole, the operation is simplified, and the effect of planting the chinaberry trees subsequently is facilitated.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, through the digging shovel and the pedal, when the earth needs to be dug, the device can be integrally moved to the ground needing to be dug, the digging shovel is inserted into the earth through the pedal, and after the digging shovel is inserted into the earth, the digging shovel can be driven by the supporting sliding plate to be turned up, the shoveled earth is taken away from the ground, then the device can be moved to the outside of the pit, the new earth pit can be dug without the operator bending down to dig the pit, so that the effects of convenience in digging the pit and reduction of the body burden of the operator are achieved.
2. According to the invention, the fertilizer storage box and the feeding folding pipe are adopted, so that the pot hole can be dug on the bottom surface, and when soil in the pot hole is taken out of the pot hole, the base fertilizer in the fertilizer storage box can be fed into the dug pot hole through the feeding folding pipe, the pot hole can be conveniently and rapidly dug, and simultaneously, the base fertilizer can be immediately filled into the pot hole, so that the effects of simplifying operation and facilitating subsequent planting of chinaberry seedlings are achieved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic front sectional view of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is an enlarged view of the structure at A in FIG. 1;
fig. 4 is an enlarged schematic view of a portion B in fig. 1.
In the figure: 1. a device bottom ring; 2. a support bar; 3. a movable wheel; 4. a control loop; 5. a movable tube; 6. pulling the rod; 7. a movable rod; 8. excavating a soil shovel; 9. a stretch rod; 10. a movable slide bar; 11. supporting the sliding plate; 12. a treading frame; 13. treading a pedal; 14. driving the toothed ring; 15. a shielding plate; 16. a support frame; 17. a control lever; 18. a fixed block; 19. a fertilizer storage box; 20. a T-shaped rod; 21. and feeding and folding the tube.
Detailed Description
In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.
In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1-4, the digging device for planting chinaberry trees comprises a device bottom ring 1, a support rod 2 is fixedly connected to the top surface of the device bottom ring 1, a movable wheel 3 is arranged on the bottom surface of the device bottom ring 1, a control ring 4 is fixedly connected to the top surface of the support rod 2, a movable tube 5 is sleeved on the surface of the control ring 4 through a hinge, a pulling rod 6 and a movable rod 7 are fixedly connected to the surface of the movable tube 5 from top to bottom in sequence, the pulling rod 6 and the movable rod 7 are fixedly connected to each other through a spring, a digging shovel 8 and a stretching rod 9 are fixedly connected to one ends of the pulling rod 6 and the movable rod 7 far away from the movable tube 5 through hinges respectively, one end of the stretching rod 9 far away from the movable rod 7 is fixedly connected to the surface of the digging shovel 8 through a hinge, a movable slide rod 10 is fixedly connected to the bottom surface of the digging shovel 8, one end of the movable slide rod 10 far away from the, the bottom surface of the supporting sliding plate 11 is fixedly connected with the top surface of the device bottom ring 1, the surface of the movable pipe 5 is fixedly connected with a driving toothed ring 14, the surface of the excavating shovel 8 close to the movable slide rod 10 is fixedly connected with a treading frame 12, one end of the treading frame 12 far away from the excavating shovel 8 is fixedly connected with a treading plate 13, the excavating shovel 8 and the treading plate 13 are connected, so that when excavating is needed, the device can be integrally moved to the ground to be excavated, the treading plate 13 is used for inserting the excavating shovel 8 into the soil, after the excavating shovel 8 is inserted into the soil, the excavating shovel 8 can be driven by the supporting sliding plate 11 to be turned up, the shoveled soil is taken away from the ground, then the device can be moved to the outside of the pit, new soil pit can be excavated, operators do not need to bend over to excavate the pit, convenient excavation is achieved, and the effect of reducing the body burden of operators
The movable tube 5, the shovel 8, the quantity that drives the ring gear 14 and support slide 11 is two, and two movable tubes 5, drive the ring gear 14 and support slide 11 and use the positive vertical central line of device ring 1 as the surface of symmetry axis evenly distributed at device ring 1 and control ring 4, drive the ring gear 14 through two, make can be when stepping on a shovel 8 activity, can be driven the ring gear 14 and drive another shovel 8 activity, dig simultaneously, and is more convenient and fast.
The equal fixedly connected with shielding plate 15 in surface of two shovels 8, two shielding plate 15 surfaces all are equipped with the inclined plane of slope, through shielding plate 15 for can guarantee that digs 8 and fold the back more tight, the soil block can not drop.
The top surface fixedly connected with support frame 16 of control ring 4, the surface of support frame 16 is through pivot and hinge fixedly connected with control lever 17, the bottom surface fixedly connected with fixed block 18 of control lever 17, the latch with drive 14 surperficial latch looks adaptations of ring gear is seted up to the bottom surface of fixed block 18, through control lever 17 for after digging earth 8 activity dug earth on earth to earth, can be blocked by fixed block 18 on the control lever 17, guarantee the smooth transportation of soil block.
The top fixedly connected with fertilizer receiver 19 of support frame 16, the fixed surface of fertilizer receiver 19 is connected with T shape pole 20, the positive shape of control lever 17 is L shape, the upper surface of control lever 17 and the surperficial swing joint of T shape pole 20, the bottom surface intercommunication of fertilizer receiver 19 has pay-off bellows 21, and the surface of pay-off bellows 21 is equipped with the control valve, the bottom of pay-off bellows 21 extends to in the space between device bottom ring 1 and the shovel 8, through fertilizer receiver 19 and pay-off bellows 21, make can dig out the pothole on the bottom surface, and when taking out the hole with the soil in the pothole, can send the base fertilizer in the fertilizer receiver 19 into the pothole that digs out via pay-off bellows 21, when conveniently digging out the pothole fast, can immediately pour the base fertilizer into the pothole, reached simplified operation, the effect of convenient follow-up planting melia tree seedling.
In the use of the invention: the device is integrally moved to the ground needing to be dug through the movable wheel 3, then the pedal 13 is stepped, the pedal 13 drives the soil digging shovel 8 and the movable slide rod 10 to move on the supporting slide plate 11 through the stepping frame 12, the soil digging shovel 8 can move downwards to be in contact with the bottom surface, after soil on the ground is shoveled, the two soil digging shovels 8 are closed, soil is dug and collected in the soil digging shovels 8, then the control rod 17 is pressed downwards, the fixing block 18 is clamped between the driving toothed rings 14, the driving toothed rings 14 are fixed, then the device is integrally moved through the T-shaped rod 20, the soil blocks are driven to move out of the pit, then the control valve on the feeding folding pipe 21 is opened, waste materials in the fertilizer storage box 19 fall into the dug pit, bottom fertilizer adding in the pit is completed, and seeding of subsequent tree seedlings is facilitated.
The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (6)

1. The utility model provides a chinaberry is planted and is used digging device, includes device bottom ring (1), its characterized in that: the device is characterized in that a supporting rod (2) is fixedly connected to the top surface of a bottom ring (1) of the device, a movable wheel (3) is arranged on the bottom surface of the bottom ring (1), a control ring (4) is fixedly connected to the top surface of the supporting rod (2), a movable tube (5) is sleeved on the surface of the control ring (4) through a hinge, a pulling rod (6) and a movable rod (7) are sequentially and fixedly connected to the surface of the movable tube (5) from top to bottom, the pulling rod (6) and the movable rod (7) are fixedly connected with each other through a spring, a digging shovel (8) and a stretching rod (9) are respectively fixedly connected to one ends, far away from the movable rod (7), of the stretching rods (9) and the digging shovel (8) through hinges, a sliding rod (10) is fixedly connected to the bottom surface of the digging shovel (8), one end of the movable sliding rod (10) far away from the shovel (8) is movably connected with a supporting sliding plate (11) through a sliding block and a sliding groove, the bottom surface of the supporting sliding plate (11) is fixedly connected with the top surface of the device bottom ring (1), the surface of the movable pipe (5) is fixedly connected with a driving toothed ring (14), the surface of the shovel (8) close to the movable sliding rod (10) is fixedly connected with a treading frame (12), and one end of the treading frame (12) far away from the shovel (8) is fixedly connected with a treading plate (13).
2. The digging device for planting chinaberry trees according to claim 1, wherein: the device is characterized in that the number of the movable tubes (5), the excavating shovel (8), the driving toothed ring (14) and the supporting sliding plate (11) is two, and the two movable tubes (5), the driving toothed ring (14) and the supporting sliding plate (11) are uniformly distributed on the surfaces of the device bottom ring (1) and the control ring (4) by taking the vertical center line of the front surface of the device bottom ring (1) as a symmetry axis.
3. The digging device for planting chinaberry trees according to claim 1, wherein: the surface of each of the two digging shovels (8) is fixedly connected with a baffle plate (15), and the surface of each of the two baffle plates (15) is provided with an inclined plane.
4. The digging device for planting chinaberry trees according to claim 1, wherein: the top surface fixedly connected with support frame (16) of control ring (4), the surface of support frame (16) is through pivot and hinge fixedly connected with control lever (17), the bottom surface fixedly connected with fixed block (18) of control lever (17), the latch with driving ring gear (14) surface latch looks adaptation is seted up to the bottom surface of fixed block (18).
5. The digging device for planting chinaberry trees according to claim 4, wherein: the top fixedly connected with fertilizer receiver (19) of support frame (16), the fixed surface of fertilizer receiver (19) is connected with T shape pole (20), the positive shape of control lever (17) is L shape, the upper surface of control lever (17) and the surperficial swing joint of T shape pole (20).
6. The digging device for planting chinaberry trees according to claim 5, wherein: the bottom surface of fertilizer receiver (19) communicates there is the pay-off to roll over pipe (21), just the surface that the pipe (21) was rolled over in the pay-off is equipped with the control valve, the bottom of pipe (21) is rolled over in extending to the device bottom ring (1) and the space between digging shovel (8) in the pay-off.
CN202010257229.9A 2020-04-03 2020-04-03 Chinaberry is planted with digging device Active CN111357428B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010257229.9A CN111357428B (en) 2020-04-03 2020-04-03 Chinaberry is planted with digging device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010257229.9A CN111357428B (en) 2020-04-03 2020-04-03 Chinaberry is planted with digging device

Publications (2)

Publication Number Publication Date
CN111357428A true CN111357428A (en) 2020-07-03
CN111357428B CN111357428B (en) 2021-07-13

Family

ID=71199180

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010257229.9A Active CN111357428B (en) 2020-04-03 2020-04-03 Chinaberry is planted with digging device

Country Status (1)

Country Link
CN (1) CN111357428B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114051790A (en) * 2021-11-30 2022-02-18 河南省烟草公司许昌市公司 Tobacco is planted and is transplanted accurate device of hitting cave with adjustable

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4400029A (en) * 1981-10-05 1983-08-23 Delpidio Dominic J Device for removing weeds
JPH08130929A (en) * 1994-11-11 1996-05-28 Ishikatsu Exterior:Kk Transplanting device
JP2009114780A (en) * 2007-11-08 2009-05-28 Narutoya:Kk Scooping tool
CN206932555U (en) * 2017-04-28 2018-01-30 福建白水洋兰花有限公司 A kind of orchid excavates instrument
JP2018060240A (en) * 2016-09-30 2018-04-12 井関農機株式会社 Work vehicle
CN108496470A (en) * 2018-03-26 2018-09-07 开县郭辉燕柚子种植场 A kind of shaddock cultivation drawing out soil equipment
CN209358931U (en) * 2018-12-11 2019-09-10 云阳县宾满农业开发有限公司 A kind of safety and the spade with clearing function
CN209787821U (en) * 2019-01-18 2019-12-17 庄凯强 Transplanting device for plant seedlings

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4400029A (en) * 1981-10-05 1983-08-23 Delpidio Dominic J Device for removing weeds
JPH08130929A (en) * 1994-11-11 1996-05-28 Ishikatsu Exterior:Kk Transplanting device
JP2009114780A (en) * 2007-11-08 2009-05-28 Narutoya:Kk Scooping tool
JP2018060240A (en) * 2016-09-30 2018-04-12 井関農機株式会社 Work vehicle
CN206932555U (en) * 2017-04-28 2018-01-30 福建白水洋兰花有限公司 A kind of orchid excavates instrument
CN108496470A (en) * 2018-03-26 2018-09-07 开县郭辉燕柚子种植场 A kind of shaddock cultivation drawing out soil equipment
CN209358931U (en) * 2018-12-11 2019-09-10 云阳县宾满农业开发有限公司 A kind of safety and the spade with clearing function
CN209787821U (en) * 2019-01-18 2019-12-17 庄凯强 Transplanting device for plant seedlings

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114051790A (en) * 2021-11-30 2022-02-18 河南省烟草公司许昌市公司 Tobacco is planted and is transplanted accurate device of hitting cave with adjustable

Also Published As

Publication number Publication date
CN111357428B (en) 2021-07-13

Similar Documents

Publication Publication Date Title
CN111480547B (en) Device suitable for automatically planting trees on multiple terrains
CN105830860B (en) Portable spiral tree mover
CN204762053U (en) Eager huge fungus grass seeds equipment of planting of formula of planting in advance
CN111357428B (en) Chinaberry is planted with digging device
CN108476681B (en) Jar planting thing transplanter
CN104813776B (en) Filling and sealing device for pit type transplanting
JP6672536B1 (en) Small agricultural tiller based on national situation
CN210183857U (en) Urban garden greening engineering is with planting device of digging
CN204634330U (en) Miniature seeding machine
CN107125100B (en) Mechanical tree ball digging shovel device
CN112679254B (en) Fertilizer for planting citrus medica var chayote, fertilizing method and fertilizing device
CN211407100U (en) Sapling digging device
CN210432383U (en) Efficient forestry seedling device of digging pit
CN213343710U (en) Handheld seedling transplanting device
CN105123481A (en) Chinese yam semi-soilless culture device and culture method thereof
CN201623974U (en) Seedling transplanter
CN220965565U (en) Simple and easy manual seeding instrument
CN221203267U (en) Alfalfa seedling transplanting device
CN217657006U (en) A earth boring machine for fruit growing
CN212677685U (en) Device that woods medicinal material was planted fast
CN210610299U (en) Chrysanthemum is planted with ware of lifting seedlings
CN220173723U (en) Soil loosening shovel for flower cultivation
CN216218727U (en) Chinese rose is planted with machine of lifting seedlings
CN217241362U (en) Municipal garden is with fixed point seeder
CN216253847U (en) Forestry is forest-planting with filling out soil compactor

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant