Length-adjustable gas spring
US4093196A · kind A · utility
50Cited by
3References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 17, 1977 |
| Grant date | Jun 6, 1978 |
| Priority date | — |
| Expiry date | Aug 17, 1997 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C3/30
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A length-adjustable gas spring is provided with a by-pass valve comprising a piston sealing element and a depression in the inner tube of the gas spring so that when the piston sealing element is pushed to a position adjacent the depression, the valve is opened.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.