Fluid-pressure and analogous brake systems – Multiple fluid-receiving devices – Multiple motors
Patent
1979-11-26
1981-04-21
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Multiple fluid-receiving devices
Multiple motors
188349, B60T 826
Patent
active
042629683
ABSTRACT:
In order to prevent an excessive braking of the rear wheels of the vehicle, brake pressure regulators are incorporated in the rear wheel brake circuit generally including a control piston and a control valve. To prevent the regulator from becoming effective upon failure of the front wheel brake circuit, a by-pass is provided which is opened by failure of the front wheel brake circuit. The known regulators of this type are expensive to manufacture and necessitate much space. The brake pressure regulator with by-pass of the present invention has the by-pass between the inlet chamber and the outlet chamber disposed in the control piston of the regulator. The by-pass terminates at one end of the control piston close to a closure piston subject to pressure from the front wheel brake circuit to maintain the by-pass closed as long as the front wheel brake circuit is intact.
REFERENCES:
patent: 3975059 (1976-08-01), Orzel
patent: 4068900 (1978-01-01), Doerfler et al.
Butler Douglas C.
Hill Alfred C.
IT&T Industries, Inc.
O'Halloran John T.
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