Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1977-07-19
1978-12-19
Kunin, Stephen G.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
188181A, 303 97, 303111, B60T 802
Patent
active
041303237
ABSTRACT:
In an anti-skid brake control system for overriding manual operation of the brakes of a vehicle having plural wheels on each of plural tandem axles, the rotational speed characteristics of each of those wheels simultaneously are monitored on an axle by axle and individual basis. When the wheels on either axle encounter an incipient or actual skid or any wheel encounters a locked condition, the system dumps a percentage, from part to all, of the brake operating fluid pressure then being requested by the vehicle operator. Appreciating that each axle of a tandemly spaced pair of axles, including the load transfer characteristics on such axle, acts individually, the present invention provides a deceleration summing circuit to monitor the deceleration characteristics of the plural wheels on respective axles. Moreover, all of the plural wheels on the tandem axles are monitored by a single wheel lock detector circuit and a single low speed control circuit. The tandem control brake system, accordingly, provides anti-skid brake control operation for the wheels on such tandem axles with improved performance characteristics and cost reduction over past techniques.
REFERENCES:
patent: 3245727 (1966-04-01), Anderson et al.
patent: 3583773 (1971-06-01), Steinbrenner et al.
patent: 3597011 (1971-08-01), Clifford
patent: 3608979 (1971-09-01), Coyle
patent: 3682512 (1972-08-01), Malon et al.
patent: 3767270 (1973-10-01), Urban
patent: 3847446 (1974-11-01), Scharlack
patent: 3880475 (1975-04-01), Booher
patent: 3917356 (1975-11-01), Devlieg
Couchot Carl A.
Rajput Yudh V.
Kunin Stephen G.
Pepper, Jr. Harry F.
The B. F. Goodrich Company
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