국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0396156
(2003-03-25)
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발명자
/ 주소 |
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대리인 / 주소 |
St. Onge Steward Johnston &
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인용정보 |
피인용 횟수 :
3 인용 특허 :
24 |
초록
▼
A wheelbarrow bumper for a wheelbarrow having a frame, a bin, and a wheel, the wheelbarrow bumper includes: a curved plate having a convexly curved outer surface and an inner surface; and, a first and a second side support members having a width and extending transversely from the curved plate, the
A wheelbarrow bumper for a wheelbarrow having a frame, a bin, and a wheel, the wheelbarrow bumper includes: a curved plate having a convexly curved outer surface and an inner surface; and, a first and a second side support members having a width and extending transversely from the curved plate, the first and the second support members each including an engaging portion adapted to connect to the frame of the wheelbarrow. The curved plate and the support members, as a whole, define a generally bracket-like cross-sectional configuration. Each engaging portion of the support members preferably includes an opening for receiving a clamping member to connect to the frame of the wheelbarrow.
대표청구항
▼
1. A wheelbarrow bumper for wheelbarrow having a frame, a bin, and a wheel, said wheelbarrow bumper comprising:a curved plate having a length, a width, and a convexly curved outer surface and an inner surface; and a first and a second side support members having a width and extending transversely fr
1. A wheelbarrow bumper for wheelbarrow having a frame, a bin, and a wheel, said wheelbarrow bumper comprising:a curved plate having a length, a width, and a convexly curved outer surface and an inner surface; and a first and a second side support members having a width and extending transversely from the curved plate, the curved plate and the support members, as a whole, defining a generally bracket-like cross-sectional configuration, the first and the second support members each including an engaging portion adapted to connect to the frame of the wheelbarrow; wherein the convexly curved outer surface of the curved plate defines a radius smaller than the radius of a tire to be used with the wheelbarrow, and the width of the curved plate is greater than the width of the side support members with each side of the curved plate extending outward from the respective side of the side support members such that the curved outer surface of the curved plate can provide a continuous and smooth arc support to the wheelbarrow, when dumping the load of the wheelbarrow, from a point where the curved plate contacts the ground and to a point where a front edge of the bin of the wheelbarrow contacts the ground. 2. The wheelbarrow bumper of claim 1, wherein each engaging portion of the support members includes two openings for receiving a clamping member to connect to the frame of the wheelbarrow.3. The wheelbarrow bumper of claim 1, wherein the convexly curved outer surface of the wheelbarrow bumper defines a generally smooth surface.4. The wheelbarrow bumper of claim 1, wherein the convexly curved outer surface of the wheelbarrow bumper includes a plurality of protrusions.5. The wheelbarrow bumper of claim 1, wherein each engaging portion of the support members includes an opening for receiving a clamping member to connect to the frame of the wheelbarrow.6. The wheelbarrow bumper of claim 5, wherein the clamping member is a screw.7. The wheelbarrow bumper of claim 1, wherein the wheelbarrow bumper is made of metal.8. The wheelbarrow bumper of claim 7, wherein the wheelbarrow bumper is made of steel.9. The wheelbarrow bumper of claim 1, wherein the wheelbarrow bumper includes a resilient member covered at least partially on the convexly curved outer surface of the curved plate.10. The wheelbarrow bumper of claim 9, wherein the resilient member is a rubber pad.11. The wheelbarrow bumper of claim 1, wherein the convexly curved outer surface defines a three-dimensional curvature.12. The wheelbarrow bumper of claim 11, wherein the convexly curved outer surface defines slope portions adjacent to the side support members.13. The wheelbarrow bumper of claim 11, wherein the convexly curved outer surface defines a radius along the length of the curved plate.14. The wheelbarrow bumper of claim 1, wherein the convexly curved outer surface defines a two-dimensional curvature.15. The wheelbarrow bumper of claim 14, wherein the convexly curved outer surface has a constant radius throughout the two dimensional curvature.16. The wheelbarrow bumper of claim 14, wherein the convexly curved outer surface has varying radius along the two dimensional curvature.17. The wheelbarrow bumper of claim 16, wherein the convexly curved outer surface has a curvature steeper at an upper half portion thereof.18. A wheelbarrow comprising:a frame including a first arm member and a second arm member; a wheel rotatably connected to the frame; and a wheelbarrow bumper including: a curved plate having a length, a width, and a convexly curved outer surface and an inner surface; and a first and a second side support members having a width and extending transversely from the curved plate, the curved plate and the support members, as a whole, defining a generally bracket-like cross-sectional configuration, the first and second side support members each including an engaging portion for mounting to the frame of the wheelbarrow; said wheelbarrow bumper being mounted to distal ends of the first and second arms of the frame by fasteners securing said engaging portions of the wheelbarrow bumper to said first and second arms, and the convexly curved outer surface of the curved plate defining a radius smaller than the radius of tire to be used with the wheelbarrow, and the width of the curved plate being or greater than the width of the side support members with each side of the curved plate extending outward from the respective side of the side support members such that the curved outer surface of the curved plate can provide a continuous and smooth arc support to the wheelbarrow, when dumping the load of the wheelbarrow, from a point where the curved plate contacts the ground and to a point where a front edge of the bin of the wheelbarrow contacts the ground. 19. The wheelbarrow of claim 18, wherein the engaging portion of the wheelbarrow bumper includes an opening for receiving a clamping member for the connection thereof.20. The wheelbarrow of claim 19, wherein the wheelbarrow bumper is connected to the frame by a screw mounted to the opening of the wheelbarrow bumper.21. A wheelbarrow bumper for a wheelbarrow having a frame, a bin, and a wheel, said wheelbarrow bumper comprising:a curved plate having a length, a width, and a convexly curved outer surface and an inner surface; and a first and a second side support members having width and extending transversely from the curved plate, the curved plate and the support members, as a whole, defining a generally bracket-like cross-sectional configuration, the first and the second support members each including an engaging portion adapted to connect to the frame of the wheelbarrow; wherein the convexly curved outer surface of the curved plate defines a two-dimensional curvature with a curvature steeper at an upper half portion thereof, and the width of the curved plate is greater than the width of the side support members with each side of the curved plate extending outward from the respective side of the side support members such that the curved outer surface of the curved plate can provide a continuous and smooth arc support to the wheelbarrow, when dumping the load of the wheelbarrow, from a point where the curved plate contacts the ground and to a point where a front edge of the bin of the wheelbarrow contacts the ground. 22. A wheelbarrow bumper for a wheelbarrow having a frame, a bin, and a wheel, said wheelbarrow bumper comprising:a curved plate having a length, a width, and a convexly curved outer surface and an inner surface; and a first and a second side support members having width and extending transversely from the curved plate, the curved plate and the support members, as a whole, defining a generally bracket-like cross-sectional configuration, the first and the second support members each including an engaging portion adapted to connect to the frame of the wheelbarrow; wherein the convexly curved outer surface of the curved plate defines a three-dimensional curvature having a curvature along the width of the outer surface and a curvature or side slope along the length of the outer surface, and the width of the curved plate is greater than the width of the side support members with each side of the curved plate extending outward from the respective side of the side support members such that the curved outer surface of the curved plate can provide a continuous and smooth arc support to the wheelbarrow, when dumping the load of the wheelbarrow, from a point where the curved plate contacts the ground and to a point where a front edge of the bin of the wheelbarrow contacts the ground.
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