IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0135484
(2002-04-30)
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발명자
/ 주소 |
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대리인 / 주소 |
Leatherwood Walker Todd & Mann, P.C.
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인용정보 |
피인용 횟수 :
9 인용 특허 :
9 |
초록
▼
A trailer for attachment to a hitch of a tow vehicle, the trailer comprising a bed, or some other type of load carrying portion, connected for pivotal movement with respect to the draw bar of the trailer. The bed is movable between a generally horizontal, hauling position and a tilted, dumping posit
A trailer for attachment to a hitch of a tow vehicle, the trailer comprising a bed, or some other type of load carrying portion, connected for pivotal movement with respect to the draw bar of the trailer. The bed is movable between a generally horizontal, hauling position and a tilted, dumping position. The bed includes a forward portion adjacent the draw bar and a rearward portion opposite the forward portion. An axle is connected to the bed to which wheels are attached. Blocking members contact the axle as the tow vehicle moves rearwardly, the blocking members being movable between a blocking position, for contacting the ground to substantially block rearward movement of the bed as the trailer is moved rearwardly, and a retracted position, wherein the blocking members are substantially out of contact with the ground. Upon the blocking member being moved to the blocking position and the bed being in the hauling position, and upon the trailer being moved rearwardly, the bed pivots to the dumping position.
대표청구항
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1. A trailer, comprising:a load carrying portion;a draw bar connected to said load carrying portion;said load carrying portion connected to said draw bar for pivotal movement with respect to said draw bar;a stop carried by said trailer; anda blocking member configured to contact said stop as said tr
1. A trailer, comprising:a load carrying portion;a draw bar connected to said load carrying portion;said load carrying portion connected to said draw bar for pivotal movement with respect to said draw bar;a stop carried by said trailer; anda blocking member configured to contact said stop as said trailer moves rearwardly, said blocking member movable between a blocking position, for contacting the ground to substantially block rearward movement of said load carrying portion as said trailer is moved rearwardly, and a retracted position, wherein said blocking member is substantially out of contact with the ground, whereby upon said blocking member being moved to said blocking position, and said trailer being moved rearwardly, said blocking member acts as a fulcrum about which said load carrying portion pivots, and said load carrying portion is tilted upwardly with respect to said draw bar. 2. A trailer comprising:a load carrying portion;a draw bar connected to said load carrying portion;said load carrying portion connected to said draw bar for pivotal movement with respect to said draw bar;an axle connected to said load carrying portion, and wheels connected to said axle; anda blocking member for contacting said axle as said trailer moves rearwardly, said blocking member movable between a blocking position, for contacting the ground to substantially block rearward movement of said load carrying portion as said trailer is moved rearwardly, and a retracted position, wherein said blocking member is substantially out of contact with the ground, whereby upon said blocking member being moved to said blocking position, and said trailer being moved rearwardly, said blocking member acts as a fulcrum about which said load carrying portion pivots, and said load carrying portion is tilted upwardly with respect to said draw bar. 3. A trailer as set forth in claim 1, wherein said blocking member is pivotally connected to said load carrying portion for pivotal movement between said blocking position and said retracted position. 4. A trailer as set forth in claim 1, wherein said blocking member is elongated and includes a generally transversely extending portion for contacting the ground. 5. A trailer as set forth in claim 1, wherein said blocking member is elongated and is pivotally connected at one end to said load carrying portion for pivotal movement between said blocking position and said retracted position, and wherein another end of said blocking member includes a rocker portion for contacting the ground upon said blocking member being in said blocking position. 6. A trailer comprising:a load carrying portion;a draw bar connected to said load carrying portion;said load carrying portion connected to said draw bar for pivotal movement with respect to said draw bar;an axle connected to said load carrying portion, and wheels connected to said axle; anda blocking member for contacting said axle as said trailer moves rearwardly, said blocking member being pivotally connected to said load carrying portion forwardly of said axle for pivotal movement between a blocking position, for contacting the ground to substantially block rearward movement of said load carrying portion as said trailer is moved rearwardly, and a retracted position, wherein said blocking member is substantially out of contact with the ground, whereby upon said blocking member being moved to said blocking position, and said trailer being moved rearwardly, said blocking member acts as a fulcrum about which said load carrying portion pivots, and said load carrying portion is tilted upwardly with respect to said draw bar. 7. A trailer as set forth in claim 1, further comprising an axle connected to said load carrying portion, and wheels connected to said axle, and wherein said load carrying portion pivots about an axis forward of said axle. 8. A trailer as set forth in claim 1, further comprising means for selectively moving said blocking member between said blocking position and said retracted position. 9. A trailer comprising:a load carrying portion;a draw bar connected to said load carrying portion;said load carrying portion connected to said draw bar for pivotal movement with respect to said draw bar;a stop carried by said trailer;a blocking member for contacting said stop as said trailer moves rearwardly, said blocking member movable between a blocking position, for contacting the ground to substantially block rearward movement of said load carrying portion as said trailer is moved rearwardly, and a retracted position, wherein said blocking member is substantially out of contact with the ground, whereby upon said blocking member being moved to said blocking position, and said trailer being moved rearwardly, said blocking member acts as a fulcrum about which said load carrying portion pivots, and said load carrying portion is tilted upwardly with respect to said draw bar; andan elongated flexible member connected to said blocking member, and a ratchet mechanism for selectively reeling in said elongated flexible member, such that said blocking member is moved to said retracted position, and paying out said elongated flexible member, such that said blocking member moves to said blocking position; and wherein said load carrying portion includes a forward portion adjacent said draw bar and said ratchet mechanism being connected to said forward portion of said load carrying portion. 10. A trailer as set forth in claim 1, further comprising a body portion attached to said load carrying portion for forming a generally box-shaped cargo compartment. 11. A trailer as set forth in claim 1, further comprising locking means connected to said draw bar for selectively locking said load carrying portion with respect to said draw bar. 12. A trailer as set forth in claim 1, wherein said stop is connected to said load carrying portion. 13. A trailer comprising:a load carrying portion;a draw bar connected to said load carrying portion;said load carrying portion connected to said draw bar for pivotal movement with respect to said draw bar;a stop carried by said trailer;a blocking member for contacting said stop as said trailer moves rearwardly, said blocking member movable between a blocking position, for contacting the ground to substantially block rearward movement of said load carrying portion as said trailer is moved rearwardly, and a retracted position, wherein said blocking member is substantially out of contact with the ground, whereby upon said blocking member being moved to said blocking position, and said trailer being moved rearwardly, said blocking member acts as a fulcrum about which said load carrying portion pivots, and said load carrying portion is tilted upwardly with respect to said draw bar; andmeans for remotely causing movement of said blocking member between said retracted position and said blocking position. 14. A trailer as set forth in claim 1, further comprising an additional blocking member, said blocking member being positioned on one side of said load carrying portion and said additional blocking member being positioned on another side of said load carrying portion, and a linking member connected between said blocking member and said additional blocking member, such that said blocking member and said additional blocking member move generally in unison with one another between a blocking position and a retracted position. 15. A trailer for carrying a load, the trailer being for attachment to a hitch of a tow vehicle, the trailer comprising:a load carrying portion;wheels connected to said load carrying portion for carrying the trailer on the ground;a draw bar;said load carrying portion connected to said draw bar for pivotal movement with respect to said draw bar; said load carrying portion being movable between a generally horizontal, hauling position and a tilted, dumping position; said load carrying portion having a forward portion adjacent said draw bar and a rearward portion opposite sai d forward portion;an axle connected to said load carrying portion, said wheels being connected to said axle;at least one rigid blocking member for contacting said axle as the tow vehicle moves rearwardly, said blocking member being movable between a blocking position, for contacting the ground to substantially block rearward movement of said load carrying portion as the trailer is moved rearwardly, and a retracted position, wherein said blocking member is substantially out of contact with the ground, whereby, upon said blocking member being moved to said blocking position and said load carrying portion being in said hauling position, and upon said trailer being moved rearwardly, said load carrying portion pivots to said dumping position;said blocking member being configured to support a substantial portion of the weight of said trailer as said load carrying portion is pivoted between said hauling and dumping positions;said load carrying portion being configured such that said rearward portion of said load carrying portion contacts the ground and supports a substantial portion of the weight of said trailer upon said load carrying portion being in said dumping position; and said load carrying portion being configured such that said wheels are lifted off the ground upon said load carrying portion being in said dumping position; andlocking means connected to said load carrying portion for selectively fixing said load carrying portion in said hauling position. 16. A trailer as defined in claim 15, wherein upon said load carrying portion being in said dumping position, and while said trailer remains attached to the hitch of the tow vehicle, said forward portion of said load carrying portion is above and projects rearwardly of said rearward portion of said load carrying portion. 17. A trailer for carrying a load, the trailer comprising:a load carrying portion;wheels connected to said load carrying portion for carrying the trailer on the ground;a draw bar;said load carrying portion connected to said draw bar for pivotal movement with respect to said draw bar; said load carrying portion being movable between a generally horizontal, hauling position and a tilted, dumping position;a stop connected to said load carrying portion;at least one blocking member configured for contacting said stop as the trailer moves rearwardly, said blocking member being movable between a blocking position, for contacting the ground to substantially block rearward movement of said load carrying portion as the trailer is moved rearwardly, and a retracted position, wherein said blocking member is substantially out of contact with the ground, whereby, upon said blocking member being moved to said blocking position and said load carrying portion being in said hauling position, and upon said trailer being moved rearwardly, said load carrying portion pivots to said dumping position;said blocking member being configured to support a substantial portion of the weight of said trailer as said load carrying portion is pivoted between said hauling and dumping positions; andsaid load carrying portion being configured such that said wheels are lifted off the ground upon said load carrying portion being in said dumping position.
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