Linear variable pressure adaptive braking and traction control system
US5188436A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 17, 1990 |
| Grant date | Feb 23, 1993 |
| Priority date | — |
| Expiry date | Aug 17, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86622
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The linear variable pressure adaptive braking and traction control system (10) includes a control valve (70) having a linear actuator (72) and a valve (74). The linear actuator (72) may be operated to displace axially a valve member (82) of the valve (74) and which has a first valve seat (85) controlling fluid flow into a longitudinal passage (84) of the valve member (82). The first valve seat (85) engages a ball valve (101) disposed within an interior opening (97) of a slidable piston (90), the ball valve (101) biased by a resilient mechanism (102). The ball valve (101) also engages a piston valve seat (96) located at an end opening (94) of the piston (90). The piston (90) has a seal (92) thereabout and slides within a bore (76) of the valve (74). A spring mechanism (100) within the bore (76) biases the piston (90 ) toward an end (77) of the bore (76) having a passage (39) which communicates with a pump (50). An intermediate bore section (78) communicates with a passage (45) which connects the bore (76) with a wheel brake (20) via an electric valve mechanism (40). Another end (79) of the bore (76) includes a passage (55) which communicates the longitudinal passage (84) of the valv…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.