Gas pressurized shock absorber assembly
US4564138A · kind A · utility
11Cited by
6References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1984 |
| Grant date | Jan 14, 1986 |
| Priority date | — |
| Expiry date | Sep 17, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F9/43
- 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.