Apparatus for producing a rotary speed-dependent control pressure
US4388941A · kind A · utility
126Cited by
3References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 5, 1981 |
| Grant date | Jun 21, 1983 |
| Priority date | — |
| Expiry date | Nov 5, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2605
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a device for producing a control pressure which corresponds to a rotary speed imparted to a shaft of a pump which is a part of the device. The device includes a measuring orifice formed by a fixed throttle and a control orifice formed by piston arrangement operating as a controlled throttle. The controlled throttle is responsive to oppositely acting pressures from opposite sides of the fixed throttle. The controlled throttle is in series with a fixed discharge throttle and the control pressure is tapped from between the controlled throttle and the discharge throttle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.