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US 5,702,243 AGranted
Hydraulic motor with pressure compensated end plates
AssigneeRHI Joint Venture
InventorC. Richard Gerlach
Life of this patent
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Abstract
A hydraulic motor having hydraulic pressure compensating annuli for compensating for different hydraulic forces exerted on seal plates that seal both ends of a rotor and a stator.
Claims7
A hydraulic motor comprising:
- a rotor having two ends;
- a stator having two ends;
- first and second seal plates having interior and exterior ends, the interior ends of the seal plates adjacent to the ends of the stator and the ends of the rotor;
- an intake annulus defined by an interior end of a first housing and the exterior end of the first seal plate, for injecting high pressure hydraulic fluid into a radial space defined by the rotor and the stator;
- an exhaust annulus defined by an interior end of a second housing and the exterior end of the second seal plate, for exhausting low pressure hydraulic fluid from the radial space defined by the rotor and the stator;
- and
- means for asymmetrically and hydraulically compensating for different hydraulic pressures exerted on the exterior of the seal plates from the intake and exhaust annuli.
4 more elements
A hydraulic motor comprising:
- a rotor having first and second ends and radial pockets;
- a stator having first and second ends;
- a first seal plate adjacent the first ends of the rotor and the stator, the first seal plate defining a first aperture communicating with the radial pockets of the rotor;
- a second seal plate adjacent the second ends of the rotor and the stator, the second seal plate defining a second aperture communicating with the radial pockets of the rotor, the second aperture being asymmetrical relative to the first aperture;
- and a pressure-compensating annulus defined by the second seal plate and a housing, the pressure-compensating annulus communicating with the second aperture.
2 more elements
Dependencies are inferred from the claim text.