Patent ID: 6050089
Filing Date: 2000-04-18
Classification: B60T

Abstract:
A brake booster for supplying an input force to a device to effect a brake application in response to pressurized fluid being communicated from a control apparatus, said brake booster having a housing with a piston located in a bore therein to define an operational chamber, said housing having an inlet port for connecting said operational chamber with said control apparatus, said piston moving from a rest position to an actuation position in response to said pressurized fluid being received in said operational chamber to produce said input force, said brake booster being characterized by an outlet port located in said housing for connecting said operational chamber with a reservoir to allow pressurized fluid to directly flow from said control apparatus to said reservoir by way of said operational chamber, said flow of fluid through said operational chamber modifying the temperature of fluid therein to maintain the viscosity of the fluid at a level sufficient for said piston to return from said actuation position to said rest position within a desired time period.