Gas pressurized shock absorber assembly
US4712353A · kind A · utility
9Cited by
10References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 1984 |
| Grant date | Dec 15, 1987 |
| Priority date | — |
| Expiry date | May 14, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF17C2223/0123
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic shock absorber is formed as a sealed assembly and subsequently, at a desired time, an opening is non-contaminantly pierced in the outer shell and the shock absorber is pressurized by passing a pressurized fluid through the opening and the opening is then non-contaminantly sealed with a metal ball by welding to make the hydraulic shock absorber permanently gas pressurized. The shock absorber assembly, the method of making it and the apparatus for making it are disclosed in this specification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.