Antilock brake control system for vehicle

Details Antilock brake control system for vehicle Antilock brake control system for vehicle

2005-06-21

2005-06-21

Butler, Douglas C. (Department: 3683)

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

C303S199000

Reexamination Certificate

active

06908161

ABSTRACT:
An antilock brake control system for a vehicle including normally-opened solenoid valves, normally-closed solenoid valves, and diodes. Each of the normally-opened solenoid valves is switched over among a turned-on state in which a predetermined first electric current is permitted to flow through the coil, a turned-off state in which the supply of the electric current to the coil is topped, and a middle state in which a second electric current lower than the first electric current is permitted to flow. In addition, the system includes a switch that is maintained in an electrically disconnecting state during shifting of each of the normally-opened solenoid valves from the turned-on state to the middle state, until the shifting is completed.

REFERENCES:
patent: 5823640 (1998-10-01), Eichhorn et al.
patent: 6381531 (2002-04-01), Schmidt
patent: 2003/0025390 (2003-02-01), Inagaki et al.
patent: 2004/0150260 (2004-08-01), Inagaki et al.
patent: 10353067 (2004-06-01), None
patent: 10-504259 (1998-04-01), None
patent: 2000-504291 (2000-04-01), None
patent: 2001-48000 (2001-02-01), None

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