Vacuum operated actuator
US4864915A · kind A · utility
2Cited by
18References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1988 |
| Grant date | Sep 12, 1989 |
| Priority date | — |
| Expiry date | Jun 13, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B9/08
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A vacuum operated actuator has a spring biased diaphragm that is exposed on one side to atmosphere and on the other side to a vacuum chamber. An output means is connected to move with the diaphragm and carries a valve means which together with a tube a manually controlled tube operates to connect the vacuum chamber with either atmosphere or with a vacuum source so that the diaphragm and thereby the output moves with the movement and in the direction of the tube so as to provide an output force so as to move the output with a force substantially greater than the input force applied to the tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.