Brake-booster with modulated reaction
US5275265A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 21, 1992 |
| Grant date | Jan 4, 1994 |
| Priority date | — |
| Expiry date | Aug 21, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/575
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The invention relates to a brake-booster (10) of a vehicle, comprising a casing (12) and a diaphragm (14) which divides in a sealed manner the interior of the casing into a front chamber (16) and a back chamber (18), a hollow piston (20) movable in the casing receiving an input member (24) adapted to be connected to a brake pedal, an output assembly comprising a lid (30) and an output rod (32) adapted to be connected to a piston (34) of a master cylinder (36), a reaction disk (28) in a deformable material arranged between the hollow piston (20) and the lid (30) so as to receive an image of the output force of the booster (10) when it is put into operation in order to cause a deformation of the reaction disk (28) tending to push back the input member (24) as a function of the image. According to the invention, a sealed fluid bearing (40) connected to a valve, which is connected to a fluid sensor (42) of the load of the vehicle, is interposed between the output rod (32) and the lid (30), the bearing (40) resting on the hollow piston (20) so as to modulate the image as a function of the load of the vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.