Control device for the speed control of pneumatic and/or hydraulic working pistons
US4144904A · kind A · utility
6Cited by
5References
10Claims
0Family size
Inventor
Key dates
| Filing date | Jun 3, 1977 |
| Grant date | Mar 20, 1979 |
| Priority date | — |
| Expiry date | Jun 3, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86799
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control device for controlling the speed of power pistons and machine elements driven by the pistons with a signal transmitter coupled to the elements, a pressure transducer producing an output from the transmitted signal having an incrementally variable transmission ratio and a throttle device with a plurality of differently shaped orifices controlled by the transducer output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.