Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1997-09-09
1999-10-19
Oberleitner, Robert J.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
B60T 836
Patent
active
059676272
ABSTRACT:
A pressure control valve unit for a hydraulic brake device is provided which considerably reduces noise, vibration, and harshness, and is compact and inexpensive. The pressure control valve unit comprises a switching valve and a normally-open inlet valve sequentially located in the main brake line in a housing cavity between the master cylinder and the wheel cylinder(s). During a brake pressure control action, the difference in pressure acting on the master cylinder side and that on the wheel cylinder side causes the switching valve to switch to a constricted channel, thereby noticeably reducing the amount of noise vibration harshness.
REFERENCES:
patent: 5647644 (1997-07-01), Volz et al.
patent: 5664849 (1997-09-01), Burgdorf et al.
patent: 5673980 (1997-10-01), Schwarz et al.
patent: 5683150 (1997-11-01), Burgdorf et al.
patent: 5704587 (1998-01-01), Kuromitsu et al.
patent: 5735582 (1998-04-01), Eith et al.
patent: 5803556 (1998-09-01), Weis et al.
Hosoya Yukio
Ishida Yoshihiro
Field Bret
Nisshinbo Industries Inc.
Oberleitner Robert J.
Siconolfi Robert A.
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