Front fork for cycle
US4493490A · kind A · utility
25Cited by
5References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 12, 1982 |
| Grant date | Jan 15, 1985 |
| Priority date | — |
| Expiry date | Oct 12, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/162
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A front fork including an outer cylinder 2 and a slidable inner cylinder 3 with working oil between them has a dust seal 5 and an oil seal 6 in sliding contact with the outer circumference of the inner cylinder. Between these seals there is a guide 7 which is also in sliding contact with the outer circumference of the inner cylinder and which is made of sponge or felt and is impregnated with grease or oil. The provision of this guide increases the lives of the other seals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.