Patent Number: 7,100,997

Title: Servo brake system comprising a decompression piston integrated with the pushrod

Abstract: A boosted brake (10) having a booster (12) for activating a primary piston (54) of a master cylinder (14) by way of a feeler (42), a reaction disk (28) and a push rod (52). The push rod (52) that is housed a decompression piston (62) and returned elastically by a spring (70) to a position of rest has at least two radial branches (64) in order to provide two boost ratios which differ according to the intensity of the input force.

Inventors: Berthomieu; Bruno (Barcelona, ES), Simon Bacardit; Juan (Barcelona, ES), Sacristan; Fernando (Cabrils, ES)

Assignee: Robert Bosch GmbH

International Classification: B60T 8/44 (20060101)

Expiration Date: 9/05/02018