Vehicle brake device

Details Vehicle brake device Vehicle brake device

2005-03-29

2005-03-29

Graham, Matthew C. (Department: 3683)

Brakes

With condition indicator

Electrical

C188S071700, C303S016000, C303S003000

Reexamination Certificate

active

06871728

ABSTRACT:
A vehicle brake device having a hydraulic pressure generating source is proposed which can reliably prevent dragging and ensure the initial response of brakes during braking. In a brake fluid supply passage from the master cylinder to the wheel cylinder, a brake fluid circulating passage having a hydraulic pressure generating source is provided. A detector for detecting whether the brake pedal is being operated, and a detector for detecting dragging of the brake pads are provided, and only when dragging is detected while the brake pedal is not being operated, the hydraulic pressure generating source is actuated for a predetermined time with a supply valve provided in the brake fluid circulating passage closed and a return valve open to suck brake fluid in the wheel cylinder and increase the distances between the brake pads and the disk rotor, thereby reliably preventing dragging.

REFERENCES:
patent: 6095289 (2000-08-01), Ray et al.
patent: 6417768 (2002-07-01), Osterman et al.
patent: 2002-347598 (2002-12-01), None

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