Anti-lock control apparatus for air over hydraulic brake system
US4889395A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1989 |
| Grant date | Dec 26, 1989 |
| Priority date | — |
| Expiry date | Mar 2, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T8/46
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Disclosed is an anti-lock control apparatus for an air over hydraulic brake system having a first air pressure line leading from a brake valve to an air master cylinder as well as a second air pressure line branching from the first air pressure line and leading to a modulator. The second air pressure line is provided with an exhaust-side check value for exhausting air from a pneumatic chamber of the modulator and an air-supply side check valve for supplying air to the pneumatic chamber. The pneumatic chamber of the modulator and the second air pressure line are adapted to hold residual pressure, thereby increasing the rising gate of the braking hydraulic pressure during braking and the falling rate of the braking hydraulic pressure during release of braking, and reducing the amount of air consumed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.