Patent ID: 6352015
Filing Date: 2002-03-05
Classification: B60T

Abstract:
A booster including a tubular valve body slidably disposed within a shell, a valve plunger slidably fitted into the valve body and coupled with an input shaft for movement therewith, an output shaft having a rear end which is slidably mounted in the valve body, and a reaction disc interposed between said rear end of the output shaft and the valve plunger for transmitting a reaction from an output acting on the output shaft to the valve plunger, the arrangement being such that in an inoperative condition where the input shaft is not driven forward, a clearance is maintained between the reaction disc and the valve plunger;further comprising resistive means for applying a resistance to a retracting movement of the valve plunger relative to the valve body in accordance with a reaction which is transmitted from the reaction disc to the valve plunger during an operation of the booster where the input shaft is driven forward.