Oil pump for controlling planetary system torque
US6688851B2 · kind B2 · utility
9Cited by
21References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2001 |
| Grant date | Feb 10, 2004 |
| Priority date | — |
| Expiry date | Jan 4, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H3/722
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
This invention provides the use of a pump to regulate torque in a planetary gear system. The pump is provided with a moveable piston as an end plate. An actuator, attached to the piston, controls the movement of the piston. In one position, the piston is in contact with the internal components of the pump. When the actuator moves the piston, the piston loses contact with the pump, thus allowing a free flow of fluid between the inlet and outlet of the pump. In this configuration, the pump is no longer able to generate the pressure that creates torque in the planetary gear system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.