Brake pressure controlling apparatus
US5178442A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1991 |
| Grant date | Jan 12, 1993 |
| Priority date | — |
| Expiry date | Mar 28, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S303/901
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A brake pressure control apparatus having a master cylinder, a front wheel cylinder and a rear wheel cylinder is provided with a brake circuit for connecting the master cylinder to the front wheel cylinder, a normally open valve unit arranged in series with respect to the brake circuit, a return circuit arranged in parallel with respect to the brake circuit, a normally closed valve unit installed in the return circuit, a reservoir unit installed in the return circuit and a pump unit installed in the return circuit. A controlling unit is provided for controlling the operations of the normally open valve unit, the normally closed valve unit and the pump unit so as to regulate the brake pressure. A cut off valve unit is interconnected between the master cylinder and the rear wheel cylinder for cutting off the rear wheel cylinder from the master cylinder while the controlling unit regulates the brake pressure. When the controlling unit is not regulating the brake pressure, the brake pressure is applied from the master cylinder to both the front and rear cylinders. Thus, the front and the rear wheels are braked. When the controlling unit regulates the brake pressure, the cut off valve u…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.