Retractable shock absorber
US4139186A · kind A · utility
108Cited by
5References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1977 |
| Grant date | Feb 13, 1979 |
| Priority date | — |
| Expiry date | Nov 23, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F2230/183
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hevy duty, retractable, hydraulic, telescopic shock absorber of the type employed on fire engines, artillery vehicles and the like includes a valve arrangement for venting the main cylinder to hold a floating absorber piston in any working position. The shock absorber includes a passageway between a damping fluid reservoir and the cylinder chamber. The passageway is in open communication with the cylinder chamber when the floating piston is in an extreme position. A valve closes the passageway when the floating piston is in a position other than the extreme position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.