Tandem brake booster

Details Tandem brake booster Tandem brake booster

2005-05-24

2005-05-24

Lazo, Thomas E. (Department: 3745)

Expansible chamber devices

Plural flexible wall working members

Reexamination Certificate

active

06895853

ABSTRACT:
A tandem brake booster has a housing defined by a front shell that is joined to a rear shell to create an interior cavity. The interior cavity is divided by first and second diaphragm assemblies that are separated by a partition member to respectively isolate a first chamber from a second chamber and a third chamber from a fourth chamber. The first and third chambers are connected to fluid having a substantially constantly first pressure while the second and fourth chambers are connected to selectively receive the fluid at the first pressure or fluid at a second pressure. The partition member is characterized by a disc with a cylindrical body extending from a ledge formed on a peripheral surface of the disc and a flange located on the cylindrical body between the ledge and an end face of the cylindrical body.

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patent: 5941610 (1999-08-01), Hayashi et al.
patent: 6626080 (2003-09-01), Hearr

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