Hydraulic anti-skid apparatus for automotive vehicles
US4660899A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Sep 30, 1985 |
| Grant date | Apr 28, 1987 |
| Priority date | — |
| Expiry date | Sep 30, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T8/4225
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A hydraulic anti-skid apparatus for automotive vehicles includes a cut-off valve disposed within a braking circuit connecting a master cylinder to a wheel brake cylinder, a bypass valve disposed within a bypass passage of the braking circuit, first and second pistons respectively arranged to control opening and closing operations of the cut-off valve and the bypass valve, the first and second pistons each being arranged to be applied at one end thereof with a hydraulic braking pressure from the master cylinder and at the other end thereof with a hydraulic power pressure from a fluid pump, a solenoid valve arranged to apply the power pressure to the first piston in its deactivated condition and to connect the first piston to a fluid reservoir in its activated condition, a regulator valve arranged to control the power pressure applied to the first and second pistons in accordance with the braking pressure applied thereto, the regulator valve including a booster piston assembly having a small diameter portion applied with the power pressure and a large diameter portion applied with the braking pressure. The regulator valve acts to cooperate with a check valve in response to movement o…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.