[특허]Combination equipment ramp, utility trailer, work surface and receiver hitch attachment

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Combination equipment ramp, utility trailer, work surface and receiver hitch attachment

국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B62B-001/04
미국특허분류(USC)	280/030; 280/643; 280/652
출원번호	US-0840967 (2004-05-07)
발명자 / 주소	Davis, Dennis L.
인용정보	피인용 횟수 : 10 인용 특허 : 17

초록
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A combination ramp and cart device includes a main frame and a pair of wheel support frames mounted thereon. In a ramp configuration the wheel support frames extend upwardly from the main frame and support respective front and back ends of ramp frames, which are removably mounted on the main frame. In a cart configuration the wheel support frames depend downwardly from the main frame and a pair of legs are mounted on the main frame to support same. In a cart configuration of the device, the main frame also mounts a trailer hitch frame. In another aspect ...

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1. A combination cart and ramp device, which comprises:a main frame with a front, a back and opposite sides; a wheel support frame with a proximate end mounted on said main frame in proximity to the front end thereof and a distal end, said wheel support frame extending generally perpendicularly from said main frame; a wheel mounted on said wheel support frame distal end; a ramp frame with a front end, a back end, opposite sides and a pair of ramps extending between said ends, each said ramp being located adjacent to a respective ramp frame side; said device having a cart configuration with said wheel support frame depending downwardly from said main frame; said device having a ramp configuration with said wheel support frame extending upwardly from said main frame; and said ramp frame being adapted for attachment at its front end to said wheel support frame distal end and at its back end to said main frame in proximity to said main frame back end whereby said ramp frame slopes between said main frame and said wheel support frame. 2. The device according to claim 1, which includes:a pair of said wheel support frames each located adjacent to a respective side of said main frame; a pair of said wheels each mounted on a respective wheel support frame; each said wheel support frame including a transverse ramp support bar; and said ramp frame including a pair of hook-shaped brackets located at its front end and each adapted for selectively engaging a respective ramp support bar with said device in its ramp configuration. 3. The device according to claim 2, which includes:a pair of transverse wheel stop bars each mounted on a respective wheel support frame and adapted for retaining a respective wheel of a vehicle or piece of equipment elevated on said device; and said ramp frame being removable from said main frame and from said wheel support frames with said device in its ramp configuration. 4. The device according to claim 2 wherein:each said ramp includes an inner rail, an outer rail and a center rail member located between said inner and outer rails, said rails and said center rail member extending in generally parallel, spaced relation between said ramp frame front and back ends; and each said bracket being mounted on a respective center rail member. 5. The device according to claim 4 wherein each wheel support frame includes inner and outer rails, which align with respective ramp inner and outer rails with said device in its ramp configuration.6. The device according to claim 5, which includes:each said wheel support frame including a leg mounted on said main frame; a wheel support frame cross member extending between said wheel support frames and mounted on said legs; said wheel support frame rails being mounted on said cross member; said main frame including a cross member extending transversely between the main frame sides; and each said wheel support frame including a first ramp support member extending from a respective side of said main frame to said wheel support frame outer rail and a second ramp support member extending from said main frame cross member to said wheel support frame inner rail. 7. The device according to claim 5 wherein:said ramp frame inner and outer rail members comprise angle-section members; and said ramp frame has a storage position lowered at least partly into said main frame and generally coplanar therewith. 8. The device according to claim 2, which includes:a pair of front legs each mounted on a respective side of said main frame and depending downwardly there from with said device in its cart configuration. 9. The device according to claim 2, which includes:a trailer hitch frame mounted on the back of said main frame with said device in its cart configuration and including a longitudinally-extending tongue with a distal end and a trailer hitch mounted said tongue distal end and adapted for connection to a vehicle hitch. 10. The device according to claim 9, which includes:said main frame including a pair of square, tubular side members each located adjacent to a respective main frame side; and said trailer hitch frame including a pair of extensions each adapted to be telescopically received in a respective main frame side member. 11. The device according to claim 9, which includes:a pair of tubular brackets mounted on each of said sides and said front and back of said main frame; a pair of side barriers each including a side panel and a pair of side posts, said side posts being telescopically received in respective said brackets for mounting said side barriers on said main frame sides; and a pair of end barriers each including an end panel and a pair of end posts, said end posts being telescopically received in respective said brackets for mounting said end barriers on said main frame ends. 12. The device according to claim 1 wherein said main frame comprises square tubular members.13. The device according to claim 2 wherein said ramp frame includes:a tubular front ramp frame member with a circular cross-sectional configuration at said ramp frame front end; a semi-circular handle mounted on said front frame member and projecting forwardly therefrom; and an angle-section back ramp frame member located at said ramp frame back end. 14. The device according to claim 6, which includes a pair of axles mounted on said wheel support frame cross member and each mounting a respective said wheel.15. The device according to claim 11 wherein said legs are selectively mounted on respective brackets mounted on said main frame side members with said device in its cart configuration and each said leg includes a lower end with a square-shaped metal plate foot.16. A combination ramp and cart device, which comprises:a main frame with opposite ends, opposite sides, square tubular main frame members located at said ends and sides respectively, a cross member extending between said side members in proximity to one of said end members; a pair of tubular brackets mounted on each said main frame member and including a bracket receiver aligned generally transversely to said frame member; a pair of wheel support frames each including a leg mounted on a respective frame side member and extending generally perpendicularly there from; a pair of wheels each mounted on a respective wheel support frame; each said wheel support frame including a transverse ramp support bar; each wheel support frame including inner and outer rails; a wheel support frame cross member extending between said wheel support frames and mounted on said legs; said wheel support frame rails being mounted on said cross member; said main frame including a main frame cross member extending transversely between the main frame sides; each said wheel support frame including a first ramp support member extending from a respective side of said main frame to said wheel support frame outer rail and a second ramp support member extending from said main frame cross member to said wheel support frame inner rail; a pair of transverse wheel stop bars each mounted on a respective wheel support frame and adapted for retaining a respective wheel of a vehicle or piece of equipment elevated on said device; said device having a cart configuration with said wheel support frame depending downwardly from said main frame; said device having a ramp configuration with said wheel support frame extending upwardly from said main frame; a ramp frame with a front end, a back end, opposite sides and a pair of ramps extending between said ramp frame ends, each said ramp being located adjacent to a respective ramp frame side; said ramp frame being removable from said main frame and from said wheel support frames with said device in its ramp configuration; each said ramp including an inner rail, an outer rail and a center rail member located between said inner and outer rails, said rails and said center rail member extending in generally parallel, spaced relation between said ramp frame front and back ends; said ramp frame including a pair of hook-shaped brackets located at its front end and each adapted for selectively engaging a respective ramp support bar with said device in its ramp configuration; each said bracket being mounted on a respective center rail member; said ramp frame being adapted for attachment at its front end to said wheel support frame distal end and at its back end to said main frame in proximity to said main frame back end whereby said ramp slopes between said main frame and said wheel support frame said ramp frame outer rail members comprising angle iron; said ramp frame having a storage position lowered at least partly into said main frame and generally coplanar therewith; a pair of front legs each mounted on a respective side of said main frame and depending downwardly there from with said device in its cart configuration; a trailer hitch frame mounted on the back of said main frame with said device in its cart configuration and including a longitudinally-extending tongue with a distal end and a trailer hitch mounted said tongue distal end and adapted for connection to a vehicle hitch; said main frame including a pair of square, tubular side members each located at a respective main frame side; said trailer hitch frame including a pair of extensions each adapted to be telescopically received in a respective main frame side member; a pair of tubular brackets mounted on each of said sides and said front and back; and a pair of side barriers each including a side panel and a pair of side posts, said side posts being telescopically received in respective said brackets for mounting said side barriers on said main frame; and a pair of end barriers each including an end panel and a pair of end posts, said end posts being telescopically received in respective said brackets for mounting said end barriers on said main frame.

이 특허에 인용된 특허 (17)

이 특허를 인용한 특허 피인용횟수: 10

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Combination equipment ramp, utility trailer, work surface and receiver hitch attachment

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이 특허에 인용된 특허 (17)

이 특허를 인용한 특허 피인용횟수: 10

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Combination equipment ramp, utility trailer, work surface and receiver hitch attachment

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이 특허에 인용된 특허 (17)

이 특허를 인용한 특허 피인용횟수: 10

IPC 상위 출원인

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IPC 상세정보(version : 201201)

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