Fail safe circuit for vehicle skid control brake system
US4057299A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 9, 1976 |
| Grant date | Nov 8, 1977 |
| Priority date | — |
| Expiry date | Aug 9, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T8/17633
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An improved vehicle skid control braking system is provided of the type that selectively controls the engagement and disengagement of the brake system of the vehicle in accordance with selective braking conditions, such as, vehicle speed, wheel speed, road surface conditions, wheel speed "slip" conditions, etc. The system includes first and second signal generating circuit components for respectively generating vehicle wheel speed and vehicle speed signals; a comparator responsive to the wheel speed and vehicle speed signals for generating a first control signal when the relationship therebetween is at a predetermined condition; a third signal generating circuit component for generating a second and third control signal when the rate of change of the wheel speed reaches a first and second value, respectively; a fourth signal generating circuit component for generating a fourth control signal proportional to the rate of change of the wheel speed signal when the first and second values are reached; and logic circuitry selectively responsive to the first, second, third and fourth control signals for disengaging the vehicle brake system when the predetermined condition and first value …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.