US20060288900A1 - Trolley for Transporting Materials on Seamed Roofs - Google Patents
Trolley for Transporting Materials on Seamed Roofs Download PDFInfo
- Publication number
- US20060288900A1 US20060288900A1 US11/463,049 US46304906A US2006288900A1 US 20060288900 A1 US20060288900 A1 US 20060288900A1 US 46304906 A US46304906 A US 46304906A US 2006288900 A1 US2006288900 A1 US 2006288900A1
- Authority
- US
- United States
- Prior art keywords
- trolley
- roof
- seams
- wheels
- ridges
- 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.)
- Abandoned
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
- B62B5/0083—Wheeled supports connected to the transported object
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
- B62B5/0083—Wheeled supports connected to the transported object
- B62B5/0093—Flat dollys without hand moving equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
- B62B5/04—Braking mechanisms; Locking devices against movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
- B62B5/04—Braking mechanisms; Locking devices against movement
- B62B5/0438—Braking mechanisms; Locking devices against movement hand operated
- B62B5/0442—Braking mechanisms; Locking devices against movement hand operated using a handle bar alone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
- B62B5/06—Hand moving equipment, e.g. handle bars
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D15/00—Apparatus or tools for roof working
Definitions
- Typical panel roofing consists of successive metallic sheets of paneling laid side-by-side to form a roofing cover.
- Each roofing panel is formed by a panel producing machine from metal sheet stock, typically fed from a roll of sheet metal.
- Forming each panel can include molding ribs down the panel length and forming both lengthwise edges of each panel to enable a mating fit between the abutting lengthwise edges of adjacent panels. Clips interleaved between the adjacent panel edges affix the panels to the roof surface.
- the panels Prior to installation of panel roofing, the panels must be hoisted to roof level for installation. Once on the roof, the panels then must be transported to a desired position on the roof. If the roof is large, roofers may need to transport the individual panels over substantial distances, including stepped up sections, as described below.
- Particularly large surfaces ordinarily are not roofed in a generally continuous, or single-level, surface to avoid the deleterious effects of thermal expansion naturally occurring in the individual roofing panels. That is, over large surfaces, individual roofing panels expand or contract, depending on weather and sun conditions, which may weaken inter-panel seams or even create gaps and expose the building and occupants thereof. Stepping roof sections, or elevating one section relative to an adjacent section by several inches, eliminates this exposure potential. However, stepping a roof renders material transport more problem-atic because roofers need to lift the heavy, elongated roofing materials over the step between adjacent sections in a coordinated fashion.
- Stackable trolleys are disclosed in U.S. Pat. No. 3,523,694, No. 3,608,921, No. 5,711,540, No. 6,079,720, and No. 6,257,152.
- known stackable trolleys are designed to maintain relative positioning among stacked trolleys, not to allow for movement of superposed trolleys.
- FIG. 1 is an environmental perspective view of an embodiment of a trolley for transporting materials constructed according to principles of the invention
- FIG. 3 is an is an environmental perspective view of another embodiment of the invention.
- FIG. 7 is an enlarged environmental front view of a portion of the embodiment of FIG. 6 ;
- FIG. 1 shows a trolley 100 for transporting materials that traverses seams S of a roof R.
- the trolley 100 has a bed 105 mounted on aligned frames 110 that house wheels 115 . Once the trolley 100 is positioned on seams S, roofing materials (not shown) are hoisted onto the trolley 100 for transportation to where the materials are needed.
- each wheel 115 is rotatingly disposed on each axle 145 .
- Each wheel 115 has a peripheral groove 155 configured to receive and readily roll on roof, guided by seam S, as shown in FIG. 1 .
- Each wheel 115 also may have a peripheral traction element 160 , such as a tread, knurling or the like.
- a trolley 600 that provides for moving materials to roof sections of different levels to access stepped-up sections of roof R.
- the trolley 600 is largely identical to trolley 100 , except that the trolley 600 includes a deck 603 mounted on frames 610 with threaded fasteners 613 or in any other conventional manner.
- the deck 603 is constructed from heavy gauge or enhanced-strength material to support, for example, the trolley 100 and materials loaded thereon.
- FIG. 6 shows another embodiment constructed according to principles of the invention. It includes a trolley 200 that is largely identical to trolley 100 , except that trolley 200 includes a brake 300 .
- the brake 300 is mounted on one of the frames 210 to which the wheels 215 are mounted.
- the brake 300 includes a handle 305 for rotating a rod 310 to drive a pin 315 and the brake pads 320 mounted thereon against roof R.
- brake 300 is normally biased into a brake position, whereby pin 315 urges brake pads 320 against the roof with enough friction to produce sufficient braking force to slow or prevent trolley motion, as shown in FIG. 6 .
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Handcart (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
A system for transporting materials that traverses seams and stepped sections of a standing-seam type roof includes two trolleys, the lower one of which has ridges on its top simulating roof seams and upon which the wheels of the upper trolley can be placed. When a step in the roof is encountered, the upper trolley can be rolled off the lower trolley onto the upper section of the roof.
Description
- This application is a division of copending application Ser. No. 10/903,856, filed Aug. 2, 2004.
- Typical panel roofing consists of successive metallic sheets of paneling laid side-by-side to form a roofing cover. Each roofing panel is formed by a panel producing machine from metal sheet stock, typically fed from a roll of sheet metal. Forming each panel can include molding ribs down the panel length and forming both lengthwise edges of each panel to enable a mating fit between the abutting lengthwise edges of adjacent panels. Clips interleaved between the adjacent panel edges affix the panels to the roof surface.
- Some panel roofs are constructed with panels spanning the width of the roof to eliminate perpendicular seams that have compromised weather-tight integrity. However, with the advent of the Butler MR-24® Roof System, and a seaming machine called a Roof Runner®, shown in U.S. Pat. No. 3,120,828, issued Feb. 11, 1964 to S. O. Gronlund, which can seam the panels with water-tight integrity, roofers have been relieved of having to produce and manipulate large, unwieldy panels on-site to provide a weather-impervious roofing cover.
- Prior to installation of panel roofing, the panels must be hoisted to roof level for installation. Once on the roof, the panels then must be transported to a desired position on the roof. If the roof is large, roofers may need to transport the individual panels over substantial distances, including stepped up sections, as described below.
- Particularly large surfaces ordinarily are not roofed in a generally continuous, or single-level, surface to avoid the deleterious effects of thermal expansion naturally occurring in the individual roofing panels. That is, over large surfaces, individual roofing panels expand or contract, depending on weather and sun conditions, which may weaken inter-panel seams or even create gaps and expose the building and occupants thereof. Stepping roof sections, or elevating one section relative to an adjacent section by several inches, eliminates this exposure potential. However, stepping a roof renders material transport more problem-atic because roofers need to lift the heavy, elongated roofing materials over the step between adjacent sections in a coordinated fashion.
- Stackable trolleys are disclosed in U.S. Pat. No. 3,523,694, No. 3,608,921, No. 5,711,540, No. 6,079,720, and No. 6,257,152. However, known stackable trolleys are designed to maintain relative positioning among stacked trolleys, not to allow for movement of superposed trolleys.
- What is needed, and not taught or suggested in the art, is a trolley for transporting materials that can traverse seams and stepped sections of a roof.
- The invention is described in detail below with reference to the following figures, throughout which similar reference characters denote corresponding features consistently, wherein:
-
FIG. 1 is an environmental perspective view of an embodiment of a trolley for transporting materials constructed according to principles of the invention; -
FIG. 2 is a bottom front right perspective view of the embodiment ofFIG. 1 ; -
FIG. 3 is an is an environmental perspective view of another embodiment of the invention; -
FIG. 4 is an environmental perspective view of another embodiment of the invention; -
FIG. 5 is an enlarged perspective view of a portion of the embodiment ofFIG. 4 ; -
FIG. 6 is an environmental perspective view of another embodiment of the invention; -
FIG. 7 is an enlarged environmental front view of a portion of the embodiment ofFIG. 6 ; and -
FIG. 8 is an enlarged environmental side view of the portion ofFIG. 7 . -
FIG. 1 shows atrolley 100 for transporting materials that traverses seams S of a roof R. Thetrolley 100 has abed 105 mounted on alignedframes 110 thathouse wheels 115. Once thetrolley 100 is positioned on seams S, roofing materials (not shown) are hoisted onto thetrolley 100 for transportation to where the materials are needed. - As viewed along direction A, the
bed 105 defines abox section 120 which provides lateral structural integrity while minimizing weight. This lightweight construction allows roofers to move thetrolley 100 readily to and among seams S of roof R and, once located on roof R, hoist significant amounts of roofing material thereon. To aid in moving thetrolley 100 to the roof and/or among the seams, thebed 105 has ahandhold 117 configured to receive a roofer's hand for lifting and moving thetrolley 100. Referring also toFIG. 2 , the underside of thebox section 120 may include one ormore ribs 125 to enhance structural integrity. Thebed 105 hashorizontal flanges 123 for mating with theframes 110. - Each
frame 110 includes symmetrically disposed L-shaped brackets 130, each having ahorizontal flange 135 and a vertical flange 140. Thehorizontal flanges 135 mate with and may be welded or otherwise fixed to thehorizontal flanges 123 ofbed 120. The vertical flanges 140 a and 140 b each have a plurality of throughbores (not shown) that are in registry for receiving a like number ofaxles 145. Anut 150 retains eachaxle 145 in eachbracket 130. - Referring to
FIG. 2 , thewheels 115 are rotatingly disposed on eachaxle 145. Eachwheel 115 has aperipheral groove 155 configured to receive and readily roll on roof, guided by seam S, as shown inFIG. 1 . Eachwheel 115 also may have aperipheral traction element 160, such as a tread, knurling or the like. -
Frames 110 a and 110 b are arranged so that thelateral spacing 165 between grooves 155 a and 155 b corresponds to the spacing between seams S, known as seam-to-seam pitch. When constructing standing seam roofs from prefabricated roof panels, this seam-to-seam pitch is fixed or consistent everywhere on the roof, except for unintended minor localized variations. Thelateral spacing 165 ofwheels 115 allows thetrolley 100 to ride along seams S over an entire roof width. - Referring to
FIG. 3 , in addition to accessing the entire width of a single-level roof R, that is, a section of roof R defining a substantially continuous surface, another embodiment of the invention is atrolley 600 that provides for moving materials to roof sections of different levels to access stepped-up sections of roof R. Thetrolley 600 is largely identical totrolley 100, except that thetrolley 600 includes adeck 603 mounted on frames 610 with threadedfasteners 613 or in any other conventional manner. Thedeck 603 is constructed from heavy gauge or enhanced-strength material to support, for example, thetrolley 100 and materials loaded thereon. - On top of the
deck 603 there are two simulatedseams 617, which are configured, positioned and aligned similar to the seams in a seamed roof. Theheight 670 of thedeck 603, the vertical spacing 675 between theflange 635 and the axle 645, and the size of thewheel 615, determine theclearance 680 between roof Rb and frame 610, are configured to provide anoverall trolley height 685, as shown inFIG. 1 , corresponding to the step up 190 between stepped adjacent roofing sections Ra, Rb. Thetrolley 600 may include a mechanism for adjusting theheight 685. - In practice, when moving materials between stepped sections Ra, Rb of roof R, a
second trolley 100 is positioned on a thelower trolley 600. The upper trolley may be pinned or otherwise impermanently fixed to the lower trolley prior to being loaded with materials. Once loaded with materials, roofers may roll thetrolley 600 along seam Sb with thetrolley 100 and materials firmly secured thereon. Upon reaching the step U between section Ra and section Rb, thetrolley 100 is disconnected from thetrolley 600. Theupper trolley 100 then may be rolled onto seam Sa along with the materials. - Referring to
FIG. 4 , another embodiment constructed according to principles of the invention is atrolley 400 that is largely identical to thetrolley 100, except thattrolley 400 includes abrake 500 which includes two handles 505 interconnected with arod 510. Referring also toFIG. 5 , therod 510 is fixed to anarm 515 to which is removably attached abrake pad 520. The rod is normally biased to urge the arm and the brake pad against roof R with enough friction to produce sufficient braking force to slow or prevent trolley motion, as shown inFIG. 4 . This safety feature significantly reduces job site accidents and injuries. - Referring to
FIG. 5 , therod 510 is received through registeredthroughbores 443 in eachvertical flange 440 offrame 410. A shouldered bushing 447 may be employed in the outer flanges 440 a for closer tolerances between therod 510 and the outer flanges 440 a. Thearm 515 has anadjustable collar 453 for frictionally engaging therod 510. Acoil spring 560 has one end (not shown) fixed relative to therod 510 with anadjustable collar 565 and another end (not shown) fixed relative to theframe 410. - A
knuckle 570 is fixed at an orientation on therod 510 so that when the handle 505 is generally vertical, theknuckle 570 contacts theframe 410 for transferring force exerted against the handle 505 to theframe 410, thence against thetrolley 400, and thereby provides motive force to move the trolley as desired. Thus, to move the trolley, a roofer first must rotate either or both handles 505 to distance thebrake pad 520 from the roof R, allowing the trolley to move. The roofer then may use the handle(s) 505 to push the trolley along the roof. -
FIG. 6 shows another embodiment constructed according to principles of the invention. It includes atrolley 200 that is largely identical totrolley 100, except thattrolley 200 includes abrake 300. Preferably, thebrake 300 is mounted on one of theframes 210 to which thewheels 215 are mounted. Referring also toFIGS. 7 and 8 , thebrake 300 includes ahandle 305 for rotating arod 310 to drive apin 315 and thebrake pads 320 mounted thereon against roof R. As with thebrake 500,brake 300 is normally biased into a brake position, wherebypin 315 urgesbrake pads 320 against the roof with enough friction to produce sufficient braking force to slow or prevent trolley motion, as shown inFIG. 6 . - The
handle 305 is rotatingly mounted on thetrolley 200 about apivot pin 325, while thehandle 307 is mounted on aframe 210. Thehandle 305 drives therod 310 via alever 317 extending fromrod 310 which is rotatingly connected to thetrolley 200 viajournals rod 310 is drivingly connected to pin 315 via a yoke-and-pin cantilever 330. - The
pin 315 is slidingly mounted on thetrolley 200 via a spring-loadedcylinder 350, which is comparable to a conventional shock absorber. Thepin 315 engages a coil spring (not shown) that abuts an end of thecylinder 350 and normally urges thepin 315 toward the roof. When thepin 315 is drawn away from the roof, spring force increases, either in tension or compression, urging thepin 315 to return to the normally-braked position. Thepin 315 has apad holder 345 welded or otherwise fixed thereto onto whichpads 320 are mounted in a conventional manner. - Inasmuch as the invention is subject to many variations and modifications, it is intended that the foregoing description and the drawings shall be interpreted as merely illustrative of the invention defined by the claims below.
Claims (3)
1. A roof trolley system for negotiating a roof step between a lower portion of the roof and an upper portion of the roof, in which both portions of the roof comprises metal panels interconnected by standing seams having uniform spacing, said system comprising
a first trolley having wheels adapted to ride on said seams, said wheels being laterally spaced from one another by said uniform spacing, said first trolley also having ridges on its upper surface simulating the roof seams, and
a second trolley having wheels adapted to engage said ridges and being laterally spaced from one another by said uniform spacing, and
means for securing the second trolley atop said first trolley,
whereby when said second trolley is placed on said first trolley, the first trolley may be moved along the seams of the lower portion of the roof until the step is encountered, whereupon the second trolley may be released from the first trolley and rolled onto the seams of the upper portion of the roof.
2. A system for transporting work materials on a standing seam roof, said system comprising first and second trolleys having wheels with identical lateral spacing, the first trolley having an upper surface with ridges simulating roof seams, whereby a second trolley may be placed with its wheels on said ridges so that, when a step between lower and upper sections of the roof is encountered by the trolley, the second trolley may be rolled off the first trolley onto the upper section of the roof.
3. The system of claim 2 , wherein each of said wheels has a peripheral groove for engaging over a room seam.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/463,049 US20060288900A1 (en) | 2004-08-02 | 2006-08-08 | Trolley for Transporting Materials on Seamed Roofs |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/903,856 US20060021539A1 (en) | 2004-08-02 | 2004-08-02 | Trolley for transporting materials on seamed roofs |
US11/463,049 US20060288900A1 (en) | 2004-08-02 | 2006-08-08 | Trolley for Transporting Materials on Seamed Roofs |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/903,856 Division US20060021539A1 (en) | 2004-08-02 | 2004-08-02 | Trolley for transporting materials on seamed roofs |
Publications (1)
Publication Number | Publication Date |
---|---|
US20060288900A1 true US20060288900A1 (en) | 2006-12-28 |
Family
ID=35730716
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/903,856 Abandoned US20060021539A1 (en) | 2004-08-02 | 2004-08-02 | Trolley for transporting materials on seamed roofs |
US11/463,049 Abandoned US20060288900A1 (en) | 2004-08-02 | 2006-08-08 | Trolley for Transporting Materials on Seamed Roofs |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/903,856 Abandoned US20060021539A1 (en) | 2004-08-02 | 2004-08-02 | Trolley for transporting materials on seamed roofs |
Country Status (3)
Country | Link |
---|---|
US (2) | US20060021539A1 (en) |
CA (1) | CA2511928A1 (en) |
MX (1) | MXPA05008129A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10448689B2 (en) * | 2015-04-20 | 2019-10-22 | Asia Hall | Lighted translucent hat |
WO2024015859A1 (en) * | 2022-07-12 | 2024-01-18 | Renovate Robotics, Inc. | Devices configured to operate on an angled surface, and associated systems and methods |
Citations (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US335483A (en) * | 1886-02-02 | samuel | ||
US671025A (en) * | 1900-06-14 | 1901-04-02 | Lane Martin | Unloading apparatus. |
US802166A (en) * | 1905-07-13 | 1905-10-17 | Standard Dry Kiln Company | Transfer-truck. |
US1188991A (en) * | 1916-01-08 | 1916-06-27 | Samuel Putnam | Trolley-ladder. |
US1220797A (en) * | 1915-09-02 | 1917-03-27 | Daniel R Tanner | Lumber-handling mechanism for kiln-drying. |
US2231560A (en) * | 1939-08-22 | 1941-02-11 | James F Campion | Roofing truck |
US3523694A (en) * | 1967-12-14 | 1970-08-11 | Earl J Oliver | Dismantleable merchandising rack |
US3608921A (en) * | 1969-07-25 | 1971-09-28 | Banner Metals Inc | Dolly |
US3715015A (en) * | 1971-12-22 | 1973-02-06 | A Morris | Brake for rollable platform |
US3769916A (en) * | 1972-09-12 | 1973-11-06 | J Hogan | Roofing shingle dolly |
US4232759A (en) * | 1979-08-02 | 1980-11-11 | Jacobs Ronald S | Mobile ladder-scaffolding system |
US4700526A (en) * | 1987-01-12 | 1987-10-20 | Mcguinness Mario F | Roofing shingle separating and laying machine |
US4747180A (en) * | 1985-06-17 | 1988-05-31 | Colson Castors (U.K.) | Castor incorporating a braking mechanism |
US4785606A (en) * | 1987-09-04 | 1988-11-22 | James E. Johnson | Mechanized roof laying system |
US4864837A (en) * | 1988-09-29 | 1989-09-12 | Fielden Jr Swan R | Apparatus for producing panel roofing |
US5197257A (en) * | 1992-05-28 | 1993-03-30 | Nietling Roger J | Apparatus for applying shingles to a roof |
US6079720A (en) * | 1997-07-31 | 2000-06-27 | O. Ames Co. | Portable stackable wagon assembly |
US6257152B1 (en) * | 2000-04-06 | 2001-07-10 | Ching-Rong Liu | Structure of pallet for stacking pallets with wheels |
US6540064B1 (en) * | 1998-05-20 | 2003-04-01 | Vanderlande Industries Nederland B.V. | Method and installation for transporting goods, as well as a combination of a container and a wheel-supported frame for transporting goods |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5205103A (en) * | 1991-05-31 | 1993-04-27 | Burton Rodney P | Shingle laying apparatus |
DK169911B1 (en) * | 1992-12-22 | 1995-04-03 | Rd Impex Aps | Trolley with swivel wheels |
-
2004
- 2004-08-02 US US10/903,856 patent/US20060021539A1/en not_active Abandoned
-
2005
- 2005-07-12 CA CA002511928A patent/CA2511928A1/en not_active Abandoned
- 2005-07-29 MX MXPA05008129A patent/MXPA05008129A/en not_active Application Discontinuation
-
2006
- 2006-08-08 US US11/463,049 patent/US20060288900A1/en not_active Abandoned
Patent Citations (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US335483A (en) * | 1886-02-02 | samuel | ||
US671025A (en) * | 1900-06-14 | 1901-04-02 | Lane Martin | Unloading apparatus. |
US802166A (en) * | 1905-07-13 | 1905-10-17 | Standard Dry Kiln Company | Transfer-truck. |
US1220797A (en) * | 1915-09-02 | 1917-03-27 | Daniel R Tanner | Lumber-handling mechanism for kiln-drying. |
US1188991A (en) * | 1916-01-08 | 1916-06-27 | Samuel Putnam | Trolley-ladder. |
US2231560A (en) * | 1939-08-22 | 1941-02-11 | James F Campion | Roofing truck |
US3523694A (en) * | 1967-12-14 | 1970-08-11 | Earl J Oliver | Dismantleable merchandising rack |
US3608921A (en) * | 1969-07-25 | 1971-09-28 | Banner Metals Inc | Dolly |
US3715015A (en) * | 1971-12-22 | 1973-02-06 | A Morris | Brake for rollable platform |
US3769916A (en) * | 1972-09-12 | 1973-11-06 | J Hogan | Roofing shingle dolly |
US4232759A (en) * | 1979-08-02 | 1980-11-11 | Jacobs Ronald S | Mobile ladder-scaffolding system |
US4747180A (en) * | 1985-06-17 | 1988-05-31 | Colson Castors (U.K.) | Castor incorporating a braking mechanism |
US4700526A (en) * | 1987-01-12 | 1987-10-20 | Mcguinness Mario F | Roofing shingle separating and laying machine |
US4785606A (en) * | 1987-09-04 | 1988-11-22 | James E. Johnson | Mechanized roof laying system |
US4864837A (en) * | 1988-09-29 | 1989-09-12 | Fielden Jr Swan R | Apparatus for producing panel roofing |
US5197257A (en) * | 1992-05-28 | 1993-03-30 | Nietling Roger J | Apparatus for applying shingles to a roof |
US6079720A (en) * | 1997-07-31 | 2000-06-27 | O. Ames Co. | Portable stackable wagon assembly |
US6540064B1 (en) * | 1998-05-20 | 2003-04-01 | Vanderlande Industries Nederland B.V. | Method and installation for transporting goods, as well as a combination of a container and a wheel-supported frame for transporting goods |
US6257152B1 (en) * | 2000-04-06 | 2001-07-10 | Ching-Rong Liu | Structure of pallet for stacking pallets with wheels |
Also Published As
Publication number | Publication date |
---|---|
MXPA05008129A (en) | 2006-02-07 |
US20060021539A1 (en) | 2006-02-02 |
CA2511928A1 (en) | 2006-02-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |