Fluid actuator
US4070946A · kind A · utility
20Cited by
7References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 3, 1976 |
| Grant date | Jan 31, 1978 |
| Priority date | — |
| Expiry date | May 3, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B15/10
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The actuator piston has a generally cylindrical central projection about the exterior of which a similarly formed rolling diaphragm is closely fitted. The piston rod can turn freely, to avoid any twisting of the piston and diaphragm, and can also be axially withdrawn from its engagement with the piston. Return spring means extends into the diaphragm enclosed part of the piston.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.