Waterproof seal ring for power brake booster housing
US4482160A · kind A · utility
8Cited by
5References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1984 |
| Grant date | Nov 13, 1984 |
| Priority date | — |
| Expiry date | Mar 28, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/928
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A waterproof seal ring, to be fitted between the contacting surfaces of a master cylinder body and the front wall of a power booster housing surrounding a bulge of the housing through which a push rod is inserted and having a downwardly extended passage groove formed in the lower part of the wall, has a circumferential vent groove formed on the pressure-contact side of the ring. The vent groove is communicated at the lower end with the passage groove in the front wall of the booster housing and at the upper end with the space inside the bulge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.