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US 7,070,402 B2Granted
Integrated speed reducer and pump assembly
AssigneeThe Timken Company
InventorsXiaolan Ai, Geoffrey Bishop
Life of this patent
Estimating the term…
Abstract
An integrated speed reducer and gerotor pump is disclosed. The device comprises a motor, a speed reducer, and a gerotor pump. The motor provides torque at an elevated speed. The speed reducer is coupled with the motor and converts the torque at an elevated speed into torque at a reduced speed. The gerotor pump is coupled with the speed reducer and uses the torque at the reduced speed for pumping fluids.
Claims13
An integrated speed reducer and gerotor pump assembly comprising:
- a motor providing torque at an elevated speed;
- a speed reducer configured for receiving torque at an elevated speed and increasing the torque to a reduced speed,
- a gerotor pump coupled with the speed reducer for receiving the torque at the reduced speed for pumping fluids;
- a housing for hosting both the gerotor pump and the speed reducer;
- the speed reducer further comprising;
- a sun roller having an input end coupled with the motor and having a first raceway;
- a planetary roller having a second raceway;
- and
- an outer ring having a third raceway eccentric to the first raceway so that the second raceway of the planetary roller engages frictional contacts with the first raceway of the sun roller and the third raceway of the outer ring for transferring torque between the sun roller and the outer ring.
6 more elements
An integrated speed reducer and gerotor pump assembly comprising:
- a speed reducer configured to receive torque at an elevated speed and to increase the torque at a reduced speed, the speed reducer further including;
- a sun roller having a first raceway;
- a planetary roller having a second raceway;
- an outer ring having a third raceway eccentric to the first raceway so that the second raceway of the planetary roller engages frictional contacts with the first raceway of the sun roller and the third raceway of the outer ring for transferring torque between the sun roller and outer ring;
- a gerotor pump coupled with the speed reducer for receiving torque at the reduced speed for pumping fluids, the gerotor pump further including;
- a housing for hosting both the gerotor pump and the speed reducer;
- a rotor having external teeth;
- a ring gear eccentric to the rotor having internal teeth wherein the ring gear has more internal teeth than the rotor has external teeth.
5 more elements
Dependencies are inferred from the claim text.