Rotary hydraulic actuator
US4762050A · kind A · utility
3Cited by
4References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 22, 1986 |
| Grant date | Aug 9, 1988 |
| Priority date | — |
| Expiry date | Oct 22, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23B31/302
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The annular transmission block (13) is pressed against the transmission face (8) of the cylinder (5) when the oil pressure arrives via the duct (17). At that moment, one of the two grooves (19 or 10) can supply one of the two ducts (9 or 10) in such a way that the oil pressure is transmitted across the fluid-retaining devices (11and 12) to one of the two ends of the chamber (4). The pressure-maintaining device (25) is then charged by stressing its spring (27) and the piston (6) moves into the chamber (4) of the cylinder, carrying along the clamp chuck (7).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.