Vacuum System For Pickup Unit
AssigneeD&W Diesel, Inc.
InventorVincent Weisbrod
Life of this patent
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Abstract
An improved system for the moving material into and out of a trailer attached to a truck that is equipped with first and second high pressure hydraulic circuits, an airlock circuit, and a low pressure return line. The improvement to the system generally includes a selector valve that is operable between load and unload positions, and a blower and motor that are mounted to the trailer's chassis and are fluidly driven by the high pressure circuits via the selector valve being in its load position. When in the unload position, the blower and motor are bypassed and the hydraulic circuits operate in their traditional manner.
Claims10
An improved system for moving material into and out of a trailer attached to a truck that is equipped with first and second high pressure hydraulic circuits, an airlock circuit, and a low pressure return line, said improvement comprising:
- a. a selector valve having first and second inputs for receiving said first and second high pressure hydraulic circuits, respectively, and respective first and second load outputs and first and second unload outlets, said selector valve being selectively operable between load and unload positions, wherein when in said load position said first and second inputs are fluidly connected to said first and second load outlets, respectively, and when in said unload position said first and second inputs are fluidly connected to said first and second unload outputs, respectively;
- b. a motor having first and second inputs that are fluidly connected to said first and second load outputs of said selector valve, and first and second outputs respectively connected to the low pressure return line and the airlock circuit, respectively;
- and
- c. a blower operatively connected to said motor.
Dependencies are inferred from the claim text.