Jacks
US3998132A · kind A · utility
23Cited by
4References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 14, 1975 |
| Grant date | Dec 21, 1976 |
| Priority date | — |
| Expiry date | Oct 14, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B15/225
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The piston of a fluid ram is provided with an end of stroke braking means comprisng a pusher adapted to contact the end wall of the ram cylinder as the piston approaches the end wall to restrict the flow of fluid from the outlet chamber of the ram to an outlet part. As the ram moves nearer the end the pusher opens a valve in the piston to connect the inlet chamber of the ram to the outlet part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.