Gm Global Technolgoy Operations, Inc.

Edward J De Hoff

Donald M Flory

Craig A Osterday

Clark D Moore

A valving arrangement as provided for a vehicle brake booster wherein an inlet valve has two ring members. The inlet valve, by providing the two ring members, one ring member inserted within another member, is less vulnerable to leaks due to a lack of parallelism.

Fluid booster with dual member input valve

A peripheral sealed interlock for a dual diaphragm tandem vacuum booster with front and rear housings is provided. An outer radial peripheral end of a divider of the inventive interlock is greatly simplified and in the preferred embodiment a bead of a secondary diaphragm is allowed to seal on a rear housing member as well as with the periphery of the divider. The interlock provides a simplified design allowing independent compression of primary and secondary diaphragm beads while at the same time providing an interlock which require lower compression for assembly and sealing.

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Huber Heights, OH, United States of America

Edward J De Hoff