Sealed type hydraulic reservoir
US4181147A · kind A · utility
6Cited by
5References
9Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Nov 4, 1977 |
| Grant date | Jan 1, 1980 |
| Priority date | — |
| Expiry date | Nov 4, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86196
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A sealed type hydraulic reservoir including a check valve for normally preventing communication between a sealed chamber in which brake fluid is stored and the surrounding atmospheric environment. The check valve allows atmospheric air to flow into the sealed chamber only when the pressure in the chamber drops below atmospheric level. A second check valve may be included for allowing air flow only out of the sealed chamber when the pressure in the chamber rises above atmospheric level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.