Shock absorber fluid composition and shock absorber containing said composition
US4634543A · kind A · utility
19Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1985 |
| Grant date | Jan 6, 1987 |
| Priority date | — |
| Expiry date | Apr 8, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/50
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A fluid composition for use in a shock absorber is described, comprising (a) a lubricating base oil, (b) 10 to 1,000 ppm, as calculated as boron, of a boron-containing compound, and (c) 100 to 3,000 ppm, as calculated as phosphorus, of phosphoric acid ester and/or phosphorous acid ester. The invention also provides a shock absorber containing said fluid composition as the shock absorber fluid. This shock absorber has the advantage of high abrasion resistance and a low coefficient of friction of movement of the movable parts relative to the stationary parts therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.