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US 8,505,413 B2Granted
Hydraulic power output unit and hydraulic hybrid drive system including same
AssigneeParker-Hannifin Corporation
InventorsJohn M. Loeffler, James H. 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.
Claims3
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 drive gear that is supported on the input shaft for rotation therewith;
- a first driven gear that is rotatably driven by the drive gear and is supported on a first driveshaft so as to rotatably drive a first hydraulic pump to pump hydraulic fluid;
- a second driven gear that is rotatably driven by the drive gear and is supported on a second driveshaft so as to rotatably drive a second hydraulic pump to pump hydraulic fluid;
- and
- a vibration damper provided within the housing for dampening vibrations in the input shaft.
4 more elements
Dependencies are inferred from the claim text.