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US 5,509,724 AGranted
Multiple axle quarter frame end dump trailer
AssigneeTravis Body & Trailer, Inc.
InventorsJohn W. Perry, Steven F. Retzloff, Jason R. Backs
Life of this patent
Estimating the term…
Abstract
A quarter frame end dump trailer has one or more resilient members placed in its drag link in order to permit the use of an air ride suspension in a tandem axle, spread axle or other multiple axle configuration.
Claims7
A quarter frame end dump trailer comprising
- a subframe having front and back ends,
- a trailer body having a front end and a dump end pivoted to the back end of the subframe,
- a telescoping hydraulic cylinder having one end pivotally attached to the trailer body adjacent the front end of the trailer body,
- a coupler plate secured to a stable location separate from the trailer body,
- a draft arm assembly having parallel arms extending from a region of the trailer body between its front and dump ends and pivotally attached to the coupler plate remote from the point of attachment to the trailer body,
- at least one resilient member,
- an air ride suspension, and
- a pair of drag links each having one end pivotally secured to the front end of the subframe, the other end secured to a predetermined location on a different one of said arms of said draft arm assembly;
- and
- each said drag link having in line first and second sections movable relative to each other to permit a change in the length of the drag link between the draft arm assembly and the subframe,
- said resilient member extending between said first and second sections of said drag link to resist reduction in length of said drag link.
8 more elements
A quarter frame end dump trailer comprising
- a subframe having front and back ends,
- a trailer body having a front end and a dump end pivoted to the back end of the subframe,
- a telescoping hydraulic cylinder having one end pivotally attached to the trailer body adjacent the front end of the trailer body,
- a coupler plate secured to a stable location separate from the trailer body,
- a draft arm assembly extending from a region of the trailer body between its front and dump ends and pivotally attached to the coupler plate remote from the point of attachment to the trailer body,
- at least one resilient member, and
- a pair of drag links each having one end pivotally secured to the front end of the subframe, the other end secured to a predetermined location on said draft arm assembly;
- and
- each said drag link having in line first and second sections movable relative to each other to permit a change in the length of the drag link between the draft arm assembly and the subframe,
- said resilient member extending between said first and second sections of said drag link to resist reduction in length of said drag link.
7 more elements
A quarter frame end dump trailer comprising
- a subframe having a front end and a back end,
- a dump trailer body having said dump end pivoted to the back of the subframe,
- a coupler plate adapted to connect the trailer to a tow vehicle,
- a telescoping cylinder connected between the coupler plate and a front end of the dump trailer body,
- a draft arm assembly extending from a region between the front and dump ends of said trailer body and the coupler plate,
- a drag link extending from the front end of the subframe to a mid region of said draft arm assembly,
- said drag link having two in-line sections movable toward and away from one another disposed between said subassembly and said draft arm, and
- resilient means for resisting the axial movement of said two sections toward one another.
5 more elements
Dependencies are inferred from the claim text.