Variable displacement hydraulic piston unit with electrically operated variable displacement control and timing control
US6176684A · kind A · utility
11Cited by
17References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 30, 1998 |
| Grant date | Jan 23, 2001 |
| Priority date | — |
| Expiry date | Nov 30, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B2207/043
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A variable displacement hydraulic piston unit with electrically operated variable displacement control and timing control is disclosed, the displacement control utilizing an electric motor such as a stepper motor and cam arrangement operable for changing the tilt angle of a swash plate of the unit, and the timing control including an electric motor, such as a stepper motor operable for rotating the swash plate relative to the pistons of the unit for effecting timing changes, the unit being operable as a pump, motor, or the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.