Arrangement for influencing the operating quantity of a servo-motor
US4204460A · kind A · utility
8Cited by
3References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1978 |
| Grant date | May 27, 1980 |
| Priority date | — |
| Expiry date | Mar 3, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87177
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The invention relates to a fluid pressure supply system for controlling a servomotor and in particular the forward speed of the servomotor, such as the raising speed of a fork lift truck, independently of the actual loading on the servomotor. This is accomplished with the combination of a pressure responsive regulating and reducing valve and a throttle valve in the supply branch of the circuit. The pressure regulating and reducing valves have setting elements that are loaded in opening directions by desired value springs and by a pilot pressure tapped between the reducing valve and the throttle valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.