Hydraulic drag brake
AssigneeHamilton Sundstrand Corporation
InventorsDarrell E. Ankney, Ryan Sievert
Life of this patent
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Abstract
A hydraulic drag brake is provided for use with a driveline. The hydraulic drag brake includes a fluid circuit including first and second loops, a first valve disposed along the first loop to allow a flow of fluid through the first loop in a first direction and to prevent a flow of the fluid through the first loop in a second direction, a second valve disposed along the second loop and a pump coupled to the driveline and configured to pump the fluid through the fluid circuit in the first direction and across the first valve with the driveline occupying a retracted position or engaging in an extend motion and in the second direction and over the second valve with the driveline occupying an extended position.
Claims20
A hydraulic drag brake for use with a driveline, the hydraulic drag brake comprising:
- a fluid circuit comprising first and second loops;
- a first valve disposed along the first loop to allow a flow of fluid through the first loop in a first direction and to prevent a flow of the fluid through the first loop in a second direction;
- a second valve disposed along the second loop;
- and
- a pump coupled to the driveline and configured to pump the fluid through the fluid circuit in the first direction and across the first valve with the driveline occupying a retracted position or engaging in an extend motion and in the second direction and over the second valve with the driveline occupying an extended position.
A self-contained bi-directional hydraulic drag brake for use with a driveline, the self-contained bi-directional hydraulic drag brake comprising:
- a fluid circuit;
- a pressure regulating valve (PRV) disposed along the fluid circuit;
- a hydraulic rectifier disposed along the fluid circuit downstream from the PRV;
- and
- a pump coupled to the driveline and configured to pump fluid through the fluid circuit in a first direction and over the PRV and through the hydraulic rectifier with the driveline occupying a retracted position or engaging in an extend motion and in a second direction and over the PRV and through the hydraulic rectifier with the driveline occupying an extended position.
Dependencies are inferred from the claim text.