Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1986-11-12
1988-06-21
Reger, Duane A.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
303111, 303119, B60T 802
Patent
active
047521040
ABSTRACT:
An anti-lock system adapted for a two-channel brake system with intercrossed piping for a pair of front and rear wheel brake devices; comprising a first passage line connecting the front and rear wheel brake devices of each of the two channels to a master cylinder; a second passage line connecting a reservoir to the front and rear wheel brake devices; a normally open type first valve device disposed in the first line; a normally closed type second valve device disposed in the second line; an electronic control device which produces signals for controlling the first and second valve devices according to the presence or absence of a locking tendency of the front or rear wheel; a third passage line is arranged to connect the reservoir to the rear wheel brake device; and a third valve device is arranged in the third line to be normally in a position A in which the rear wheel brake device is allowed to communicate with the master cylinder and to be switched by a signal produced from the electronic control device over to a position B in which the rear wheel brake device is alone connected to the reservoir when the rear wheel alone tends to be locked prior to the front wheel.
REFERENCES:
patent: 4578951 (1986-04-01), Belart et al.
patent: 4600244 (1986-07-01), Leiber
patent: 4626043 (1986-12-01), Belart et al.
patent: 4647114 (1987-03-01), Schuett et al.
Akebono Brake Industry Co. Ltd.
Graham Matthew C.
Reger Duane A.
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