Anti-skid system including pressure differential and solenoid actuated triple seat, dual valves
US5354123A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 5, 1992 |
| Grant date | Oct 11, 1994 |
| Priority date | — |
| Expiry date | Nov 5, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87209
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A brake and anti-skid system (8) having an operator controlled source (11) of hydraulic fluid pressure, a hydraulically actuated wheel brake (12, 39, 17, 41) which responds to applied hydraulic pressure to apply a braking force to the wheel to arrest wheel motion, a low pressure hydraulic fluid return line (26, 35), and a modulator (15) interconnecting the source (11), the return line (26, 35), and the brake (12, 39, 17, 41) for directing fluid from the source (11) to the brake (12, 39, 17, 41) when in a normal braking state and for directing fluid from the brake (12, 39, 17, 41) to the return line (26,35) when in a second state. An accumulator (23) receives and stores pressurized hydraulic fluid from a pump (37, 52), and a fixed size fluid restriction (27A-D) provides a limited flow of hydraulic fluid from the pump (37, 52) and accumulator (23) to the brake (12, 39, 17, 41) to rebuild the braking force after a skid has been detected and the modulator (15) having decayed fluid from the brake (12, 39, 17, 41) to the return line (26, 35). The modulator (15) includes a triple seat, dual check valve (15A, 15B) and a pair of triple seat, dual solenoid valves (10, 28).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.