Vacuum booster

Details Vacuum booster Vacuum booster

2007-08-14

2007-08-14

Rodriguez, Pam (Department: 3683)

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

C303S113300, C188S356000, C091S369300

Reexamination Certificate

active

11258146

ABSTRACT:
A vacuum booster which moderates a retraction speed of a valve seat member to restrain a contact noise between a key member retracting in a unitary manner with the valve seat member and a flange surface of a plunger. The vacuum booster includes a noise restriction device.

REFERENCES:
patent: 3661054 (1972-05-01), Brown
patent: 5873296 (1999-02-01), Shirahata et al.
patent: 5941071 (1999-08-01), Bacardit
patent: RE37373 (2001-09-01), Tsubouchi et al.
patent: 6374721 (2002-04-01), Zehnder, II et al.
patent: 7014276 (2006-03-01), Miwa et al.
patent: 2003/0140777 (2003-07-01), Barcardit et al.
patent: 8-318846 (1996-12-01), None
patent: 2002-46592 (2002-02-01), None
patent: WO 01/32488 (2001-05-01), None

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