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US 2009/0260353 A1Published application
Hydraulic power output unit and hydraulic hybrid drive system including same
AssigneeParker-Hannifin Corporation
InventorsJohn M. Loeffler, James A. Blalock
Life of this patent
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Abstract
A hydraulic power output unit can be used in a hydraulic hybrid drive system for propelling a vehicle. The hydraulic power output unit includes a housing having an input shaft that extends within the housing and is adapted to be rotatably driven by a source of rotational power. A hydraulic pump is rotatably driven by the input driveshaft to pump hydraulic fluid. A vibration damper is provided within the housing for dampening vibrations in the input shaft.
Claims14
A hydraulic power output unit comprising:
- a housing;
- an input shaft that extends within the housing and is adapted to be rotatably driven by a source of rotational power;
- a hydraulic pump that is rotatably driven by the input driveshaft to pump hydraulic fluid;
- and
- a vibration damper provided within the housing for dampening vibrations in the input shaft.
2 more elements
A hydraulic power output unit and drive unit assembly comprising:
- a hydraulic power output unit including a housing;
- an input shaft that extends within the housing and is adapted to be rotatably driven by a source of rotational power;
- a hydraulic pump that is rotatably driven by the input driveshaft to pump hydraulic fluid;
- and a vibration damper provided within the housing for dampening vibrations in the input shaft;
- and
- a drive unit including an input shaft, a hydraulic motor that is rotatably driven by the hydraulic pump of the hydraulic power output unit and rotatably drives the input shaft, and an output shaft that is rotatably driven by the input shaft.
3 more elements
Dependencies are inferred from the claim text.