Fluid-pressure and analogous brake systems – Flow retarder – Isolation valve
Reexamination Certificate
2009-04-02
2011-12-13
Rodriguez, Pamela (Department: 3657)
Fluid-pressure and analogous brake systems
Flow retarder
Isolation valve
C303S157000, C188S072300
Reexamination Certificate
active
08075066
ABSTRACT:
In an active brake pads retraction system, the improvement is a metering check valve which limits the retraction. The metering check valve is interfaced with an anti-lock brake system (ABS), disposed in the hydraulic brake line between the brakes apply system of the ABS and a caliper member of the ABS located at each brake corner. Brake pads are retracted with respect to the brake rotor responsive to predetermined conditions of the motor vehicle in which braking is not required, wherein a retraction volume within the metering check valve limits the amount of brake pads retraction.
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U.S. Appl. No. 11/739,721, filed Apr. 25, 2007 to Leach, et al, entitled “Active Brake Pads Retraction System and Method”.
GM Global Technology Operations LLC
Rodriguez Pamela
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