Brake pressure control device for a road vehicle
US5367942A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 1993 |
| Grant date | Nov 29, 1994 |
| Priority date | — |
| Expiry date | Oct 12, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/66
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A brake pressure control device for a road vehicle with a hydraulic brake system has a pneumatic braking force amplifier which is provided with a switch-over device which switches ever the braking force amplifier to operation with increased amplification factor when the speed with which the driver actuates the brake pedal exceeds a threshold value .phi..sub.s. In the axial force transmission train leading from the brake pedal via a reaction piston of the control part, via a reaction element and via the actuating piston of the braking force amplifier to the main cylinder. A rigid force transmission element is in mechanical parallel connection to a flexible transmission element and associated with which there is a position engaged in the force transmission train as the basic position for the judicious braking operation, and an actuation device, which responds when the threshold value .phi..sub.s of the pedal actuation speed is exceeded and then disengages the distance piece from its supporting position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.