Pneumatic brake booster

Details Pneumatic brake booster Pneumatic brake booster

2005-10-07

2009-12-22

Lazo, Thomas E (Department: 3745)

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

Reexamination Certificate

active

07634960

ABSTRACT:
A pneumatic brake booster for motor vehicles includes a booster housing, subdivided into at least one working chamber and at least one vacuum chamber by at least one axially movable wall to which a pneumatic differential pressure can be applied, a control valve controlling the differential pressure and arranged in a control housing to connect the working chamber to the vacuum chamber or atmosphere, the valve having two concentrically arranged sealing seats and an elastically deformable valve member, an operable input member connected to a valve piston whose movement is limited by a transverse member that can be introduced in a radial direction into the control housing, an elastic reaction element, an output member applying a boosting force to a master cylinder, and ventilating and bleeding ducts in the control housing.

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patent: 41 24 683 (1993-01-01), None
patent: 600 04 605 (2004-06-01), None
Patent Abstract of Japan, publication No. 2002104168 A, date of publication: Apr. 10, 2002, Applicant: Honda MOtor Co. Ltd.

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