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US 8,876,216 B2Granted
Dump trailer
AssigneeAll Right Steel, LLC
InventorLarry L. Stewart
Life of this patent
Estimating the term…
Abstract
A towable dump trailer is provided. The towable dump trailer comprises a first, second and third frame. The first frame comprises one or more sets of wheels. The second frame is attached to the tow vehicle and can be displaced horizontally relative to the first frame by the towing vehicle moving rearward or forward. The third frame provides a support frame for the trailer bed. The dump trailer is operated by immobilizing the first frame and causing the second frame to move horizontally relative to the first frame. This horizontal displacement causes the third frame to rotate as a result of one or more rear torque arms translating the horizontal movement to rotational movement. The dump trailer can be configured to provide a dumping action by either forward or rearward horizontal displacement of the second frame relative to the first frame.
Claims28
A dump trailer comprising:
- a first frame, the first frame bearing one or more sets of wheels;
- a second frame, the second frame comprising an attachment device to permit coupling to a towing vehicle;
- a third frame positioned above the first and second frames and providing support for a trailer bed;
- horizontal displacement means for permitting horizontal forward and rearward movement of the second frame relative to the first frame, wherein the horizontal displacement means contacts the first frame and the second frame;
- pivoting means for providing a pivot point for the third frame as the second frame moves horizontally forward and rearward relative to the first frame;
- one or more rear torque arms, wherein the one or more rear torque arms cause the third frame to pivot about the pivoting means as the second frame moves forward and rearward relative to the first frame;
- wherein the first, second and third frames comprise one or more longitudinal support beams;
- wherein the second frame is positioned between the first frame and the third frame and;
- wherein the horizontal displacement means comprises a pair of attachment plates, an upper roller, and a lower roller, wherein the pair of attachment plates are coupled to a longitudinal support beam of the second frame and extend downward and flank opposite vertical side surfaces of a longitudinal support beam of the first frame, wherein the upper roller is positioned between and contacts a lower horizontal surface of said longitudinal support beam of the second frame and an upper horizontal surface of said longitudinal support beam of the first frame, and wherein the lower roller is positioned such that it contacts a lower horizontal surface of said longitudinal support beam of the first frame.
6 more elements
A dump trailer comprising:
- a first frame, the first frame bearing one or more sets of wheels;
- a second frame, the second frame comprising an attachment device to permit coupling to a towing vehicle;
- a third frame positioned above the first and second frames and providing support for a trailer bed;
- horizontal displacement means for permitting horizontal forward and rearward movement of the second frame relative to the first frame, wherein the horizontal displacement means contacts the first frame and the second frame;
- vertical elevator means for providing a component of upward force on a front portion of the third frame as the second frame moves horizontally rearward relative to the first frame;
- and
- a rear torque arm extending from a rear portion of the first frame to a rear portion of the third frame, wherein the rear torque arm provides a component of downward force on the rear portion of the third frame by pivoting counterclockwise about a lower torque arm pivot point as the second frame moves rearward relative to the first frame;
- wherein the vertical elevator means comprises:
- an elevator arm extending from a front portion of the second frame to the front portion of the third frame;
- a first and second ramped track, wherein the first ramped track is positioned on a first longitudinal support beam of the first frame and the second ramped track is positioned on a second longitudinal support beam of the first frame;
- and
- a first and second roller arm each comprising a roller, wherein the first roller arm extends down from a first longitudinal support beam of the third frame and the second roller arm extends down from a second longitudinal support beam of the third frame, wherein the first roller arm is positioned such that its roller contacts the first ramped track and the second roller arm is positioned such that its roller contacts the second ramped track as the second frame moves horizontally rearward relative to first frame.
9 more elements
A dump trailer comprising:
- a first frame connected to a plurality of wheels;
- a second frame adapted to attach to a towing vehicle;
- and
- a third frame attached to a trailer bed and positioned above the first and second frames;
- wherein one of the front or rear ends of the third frame raises in response to horizontal movement of the second frame and one of the first or second frames is positioned at least partially between the other two frames.
2 more elements
A dump trailer comprising:
- a first frame connected to a plurality of wheels;
- a second frame adapted to attach to a towing vehicle;
- a third frame attached to a trailer bed and positioned above the first and second frames;
- and
- a torque arm extending from the first or second frame to the third frame;
- wherein the torque arm applies downward force to the third frame in response to horizontal movement of the second frame.
3 more elements
A dump trailer comprising:
- a first frame connected to a plurality of wheels;
- a second frame adapted to attach to a towing vehicle;
- a third frame attached to a trailer bed and positioned above the first and second frames;
- and
- an elevator arm attached to the third frame and either the first or second frame;
- wherein the elevator arm applies upward force to the third frame in response to horizontal movement of the second frame.
3 more elements
A dump trailer comprising:
- a first frame connected to a plurality of wheels;
- a second frame adapted to attach to a towing vehicle;
- and
- a third frame attached to a trailer bed and positioned above the first and second frames;
- wherein the third frame is configured to pivot about a connection to the second frame in response to horizontal movement of the second frame.
2 more elements
Dependencies are inferred from the claim text.