Master cylinder
US4559781A · kind A · utility
13Cited by
7References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1983 |
| Grant date | Dec 24, 1985 |
| Priority date | — |
| Expiry date | Oct 31, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/91
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A master cylinder includes a housing with a pair of pistons movable therein to develop fluid pressure in a pair of pressure chambers. One of the pistons carries a seal assembly in order to provide a fast-fill feature. The seal assembly engages a large diameter section during initial braking and separates therefrom after a predetermined fluid pressure level is reached so that the one piston moves relative to a small diameter section to continue fluid pressure buildup during braking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.