Control mechanism for automotive vehicle hydraulic braking system
US3969001A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1974 |
| Grant date | Jul 13, 1976 |
| Priority date | — |
| Expiry date | Aug 29, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S303/11
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A hydraulic braking system for a vehicle is provided wherein a hydraulic brake pressure control device which includes a solenoid valve and a switching valve is arranged in a rear brake hydraulic circuit of the system. The solenoid valve applies braking fluid pressure on the wheel cylinder side of the braking system to an accumulator when wheel lock occurs and thereby lowers the wheel cylinder fluid pressure by increasing the volume within the circuit on the wheel cylinder side. The switching valve cuts off the rear brake hydralic circuit by means of an interlocking operation with a piston of the accumulator. Thus, the wheel lock is released and a relief valve or a pressure regulator is provided in parallel with the hydraulic brake pressure control device so that after release of the wheel lock the wheel cylinder fluid pressure is raised in correspondence with the relationship of allotted braking forces between the front and rear wheels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.