A trailer for carrying cargo includes a frame, at least two axles mounted to the frame, and a deck. The axles have wheels at opposite ends of the axles for movably supporting the frame above the ground. The deck is pivotally mounted to the frame and is pivotable about a first axis relative to the fr
A trailer for carrying cargo includes a frame, at least two axles mounted to the frame, and a deck. The axles have wheels at opposite ends of the axles for movably supporting the frame above the ground. The deck is pivotally mounted to the frame and is pivotable about a first axis relative to the frame and a second axis relative to the frame via at least two supports. The first axis extends generally longitudinally along the deck and the second axis extends generally laterally across the deck and generally normal to the first axis. The deck is also slidable generally along the first axis relative to the frame and/or one of the supports. The deck thus may be adjusted about multiple axes and may be moved forwardly or rearwardly relative to the frame to position the deck in a desired location and orientation relative to the frame.
대표청구항▼
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows: 1. A trailer for carrying cargo, said trailer comprising: a frame portion; at least two axles mounted to said frame portion, each of said axles having at least one wheel at opposite ends
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows: 1. A trailer for carrying cargo, said trailer comprising: a frame portion; at least two axles mounted to said frame portion, each of said axles having at least one wheel at opposite ends of said axle, said wheels and said axles supporting said frame portion above the ground; a deck, said deck being pivotally mounted to said frame portion via a first support and a second support, said first and second supports being independently operable to raise and lower respective portions of said deck relative to said frame portion, said deck being pivotable about a longitudinal deck axis relative to said frame portion and a lateral deck axis relative to said frame portion via said supports, said longitudinal deck axis extending generally longitudinally along said deck, said lateral deck axis extending generally laterally across said deck and generally normal to said longitudinal deck axis; said first support comprising an extendable and retractable boom that is pivotally mounted to said frame portion and pivotable about a first lateral axis at said frame portion, said deck being pivotally mounted to said boom and pivotable about said longitudinal and lateral deck axes relative to said boom; said second support comprising a pair of rear supports at a rear end of said frame portion, said pair of rear supports being pivotally mounted at said rear end of said frame portion and being pivotable about a second lateral axis at said frame portion, said second support including a pivot member at an upper end of each of said rear supports; and said deck being slidably mounted to said pair of pivot members and being slidable longitudinally relative to said pivot members, said pivot members being pivotally mounted to respective ones of said pair of supports and being pivotable relative to said pair of supports about respective lonaitudinal axes, said deck being slidable generally along said longitudinal deck axis relative to said pivot members when said boom is extended or retracted. 2. The trailer of claim 1, wherein said deck is movable along said longitudinal deck axis and pivotable about said lateral deck axis to engage an end portion of said deck with the ground. 3. The trailer of claim 1, wherein said deck is pivotable about said longitudinal deck axis irrespective of a degree of pivotal movement about said lateral deck axis. 4. The trailer of claim 3, wherein said deck is slidable generally along said longitudinal deck axis irrespective of a degree of pivotal movement about said longitudinal and lateral deck axes. 5. The trailer of claim 1, wherein said deck is pivotable relative to said boom about at least two. 6. The trailer of claim 1, wherein said first and second lateral axes are coaxial. 7. The trailer of claim 1, wherein said first and second intend axes are non-coaxial. 8. The trailer of claim 7, wherein said pair of rear supports are pivotally mounted to respective brackets and are pivotable about said second lateral axis at said brackets, said brackets being pivotally mounted to said frame portion and pivotable relative to said frame portion about said first lateral axis when said boom pivots about said first lateral axis. 9. The trailer of claim 8, wherein said pair of rear supports are attached to said deck at opposite sides of a centerline of said deck, said pair of rear supports being independently extendable and retractable to cause said deck to pivot about said longitudinal deck axis. 10. The trailer of claim 8, wherein said deck is slidable relative to said second support when said pair of rear supports are pivoted about said second lateral axis. 11. The trailer of claim 8, wherein said second support is pivotable about said second lateral axis at said frame portion in response to at least one actuator, said at least one actuator pivoting said second support about said second lateral axis to vertically adjust said portion of said deck relative to said frame portion. 12. The trailer of claim 1, wherein said at least two axles comprise front and rear steerable axles that are steerable to steer said trailer as it moves over the ground. 13. The trailer of claim 12, wherein said rear steerable axle is turned in a first direction when said front steerable axle is turned in a second direction, said first direction being generally opposite to said second direction. 14. The trailer of claim 13, wherein said front axle is mechanically connected to said rear axle, such that pivotal movement of said front axle in said second direction causes a corresponding pivotal movement of said rear axle in said first direction. 15. The trailer of claim 14, wherein said front axle is mechanically connected to said rear axle via an elongated member extending between said front and rear axles. 16. The trailer or claim 12, wherein said at least two axles further comprises at least one center axle, said at least one center axle being vertically adjustable relative to said frame portion between a lowered position, where said wheels of said at least one center axle assist in supporting said frame portion above the ground, and a raised position, where said wheels of said at least one center axle are above the ground and said frame portion is supported by said wheels of said front and rear axles. 17. The trailer of claim 16, wherein said front arid rear axles are vertically adjustable between a lowered position, where said wheels of said front and rear axles assist in supporting said frame portion above the ground, and a raised position, where said wheels of said front and rear axles are above the ground and said frame portion is supported by said wheels of said at least one center axle. 18. The trailer of claim 12 including a trailer hitch portion that is pivotable to steer said front axle, said hitch portion being pivotally attached to a front end of said frame portion and being pivotable about a first generally vertical pivot axis. 19. The trailer of claim 18, wherein said front axle is incorporated into a front axle assembly that is pivotable about a second generally vertical pivot axis to steer said trailer. 20. The trailer of claim 19, wherein said hitch portion extends forwardly from said first pivot axis and is movably connected to a forward portion of said front axle assembly. 21. The trailer of claim 20, wherein said first generally vertical pivot axis is positioned forwardly of said second generally vertical pivot axis. 22. The trailer of claim 1, wherein said deck comprises a conveyor operable to convey an article onto and off from said deck. 23. The trailer of claim 1, wherein said deck includes an adjustable platform portion at an end of said deck, said adjustable platform being pivotable about lateral axis extending laterally across said deck. 24. A trailer for carrying cargo, said trailer comprising: a frame portion; at least two axles mounted to said frame portion, each of said axles having at least one wheel at opposite ends of said axle, said wheels and said axles supporting said frame portion above the ground; a deck, said deck being pivotally mounted to said frame portion by a boom member and at least one rear support, said boom member being pivotally connected at said frame portion and at a forward portion of said deck, said at least one rear support being pivotally mounted at a rear portion of said frame portion and is pivotally and slidably attached to said deck, said at least one rear support being pivotable relative to said frame portion about a first lateral pivot axis at said frame portion and said deck being pivotable relative to said at least one rear support about a longitudinal pivot axis of said deck; and said boom member being pivotable about a second lateral axis extending generally laterally across said frame portion to vertically adjust said forward portion of said deck relative to said frame portion, said boom member pivoting about said second lateral axis via a first actuator attached to said frame portion and said boom member, said boom member being extendable and retractable to longitudinally adjust a position of said deck relative to said frame portion, said boom member being extendable and retractable via a second actuator positioned along at least a portion of said boom member, said deck sliding relative to said at least one rear support when said boom member extends or retracts to longitudinally adjust the position of said deck relative to said at least one rear support. 25. The trailer of claim 24, wherein said forward portion of said deck is pivotally attached to an end of said boom member via a multi-axis connection that facilitates pivotal movement of said forward portion of said deck about at least two axes. 26. The trailer of claim 25, wherein said boom member comprises a telescopic boom member having a first member pivotally attached to said frame portion and a second member pivotally attached to said deck, said second member being extendable relative to said first member by said second actuator to longitudinally adjust said deck relative to said frame portion. 27. The trailer of claim 26, wherein said deck is longitudinally movable and pivotable about said laterally extending axis to move an end of said deck toward and into contact with the ground. 28. The trailer of claim 24, wherein said at least one rear support is pivotally mounted at at least one mounting bracket at a rear portion of said frame portion and is pivotable relative to said at least one mounting bracket about said first lateral axis to adjust said rear portion of said deck relative to said frame portion. 29. The trailer of claim 28, wherein said at least one mounting bracket is fixedly attached relative to said boom member, said at least one mounting bracket and said at least one rear support being pivotable about said second lateral axis as said boom member is pivoted about said second lateral axis. 30. The trailer of claim 28, wherein said at least one support is extendable and retractable to vertically adjust said rear portion of said deck relative to said frame portion. 31. The trailer of claim 30, wherein said at least one rear support comprises a pair of rear supports positioned towards opposite sides of said frame portion and said deck, said pair of rear supports being independently extendable and retractable to cause said deck to pivot about a longitudinal axis extending generally longitudinally along said deck. 32. A trailer for carrying cargo, said trailer comprising: a frame portion; at least two axles mounted to said frame portion, each of said axles having at least one wheel at opposite ends of said axle, said wheels and said axles supporting said frame portion above the ground; and a deck, said deck being pivotally mounted to said frame portion and being pivotable about a longitudinal axis relative to said frame portion and a lateral axis relative to said frame portion, said longitudinal axis extending generally longitudinally along said deck, said lateral axis extending generally laterally across said deck and generally normal to said longitudinal axis; an extendable and retractable boom pivotally mounted to said frame portion and pivotable about a first lateral axis at said frame portion, said deck being pivotally mounted to a forward end or said boom and being pivotable relative to said boom about at least two pivot axes, said boom being extended and retracted to longitudinally move said deck relative to said frame portion, said boom being pivoted about said first lateral axis to generally vertically move a forward portion of said deck; and a pair of rearward supports, said rearward supports being pivotally mounted at a rearward portion of said frame portion at respective and opposite sides of a centerline of said frame portion, said rearward supports being pivotable relative to said frame portion about a second lateral axis at said frame portion, said rearward supports each including a slide member pivotally mounted at an upper end of said rearward supports, said deck being slidably mounted to said slide members, said rearward supports pivoting about said second lateral axis to vertically adjust said rearward portion of said deck relative to said frame portion, said rearward supports being independently extendable and retractable to pivot said deck about said longitudinal axis, said deck sliding along said slide members to longitudinally move relative to said rear supports in response to extension and retraction of said boom and in response to pivotal movement of said rearward supports about said second lateral axis. 33. The trailer of claim 32, wherein said slide members slide along said deck as said rearward supports are pivoted about said laterally extending axis at said frame portion. 34. The trailer of claim 32, wherein said first and second lateral axes are non-coaxial. 35. The trailer of claim 34, wherein said pair of rear supports are pivotally mounted to respective brackets and are pivotable about said second lateral axis at said brackets, said brackets being pivotally mounted to said frame portion and pivotable relative to said frame portion about said first lateral axis when said boom pivots about said first lateral axis. 36. The trailer of claim 32, wherein said rearward supports are fixed relative to said boom member and pivotable about said first lateral axis with said boom member. 37. The trailer of claim 36, wherein said rearward supports are pivotable about said second lateral axis to move said deck rearward and to lower said rearward portion of said deck toward and into contact with the ground. 38. The trailer of claim 32, wherein each of said pair of rearward supports comprises a telescopic support having a first member that is extendable and retractable relative to a second member, said first members being extendable and retractable via a pair of first actuators positioned at least partially along said rearward supports. 39. The trailer of claim 38, wherein said pair of rearward supports are pivoted about said second lateral axis via second actuators. 40. The trailer of claim 32, wherein said rearward supports are pivotable about said second lateral axis at said frame to move said rearward portion of said deck rearward relative to said frame portion and to lower said rearward portion of said deck downward toward the ground rearward of said frame portion. 41. The trailer of claim 32, wherein said rearward supports are pivotable in unison with one another.
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