Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1989-01-19
1989-11-28
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
303 61, 303110, 188181R, B60T 840, B60T 1370
Patent
active
048833274
ABSTRACT:
A hydraulic anti-lock braking system incorporates a pump for generating the energy necessary to re-apply a brake automatically after pressure applied to the brake from a master cylinder has first been released to prevent the wheel controlled by that brake from locking. The pump is adapted to pump fluid back both to the brake and to the master cylinder. Pumping the fluid back to the brake achieves a satisfactory pedal feel, and pumping fluid back to the master cylinder ensures the use of a fail-safe re-application of brake pressure.
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Butler Douglas C.
Lucas Industries
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