Fluid-pressure and analogous brake systems – Multiple fluid-receiving devices – Multiple motors
Patent
1982-06-11
1983-10-25
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Multiple fluid-receiving devices
Multiple motors
188349, 303 24F, B60T 818, B60T 826
Patent
active
044114761
ABSTRACT:
A hydraulic pressure control valve for controlling braking pressure of two independent circuits and including two stepped pistons with the large ends being exposed respective outlet pressure and the small ends thereof being exposed to a control chamber which is connected through an inertia valve mechanism to the inlet of one circuit. The stepped pistons receive the pressure in the inlets of respective circuits at the intermediate portions thereof and incorporate therein valve mechanisms connecting normally the inlets and outlets. There are further provided a spring biased plunger retractable in receiving the pressure in the control chamber, and a stepped emergency piston with the large end being exposed to the control chamber and normally separated from the small end of the stepped piston of the other circuit. The small end of the emergency piston is exposed to the pressure of the inlet of the other circuit.
REFERENCES:
patent: 3459000 (1969-08-01), Oberthur
patent: 4026607 (1977-05-01), Hess et al.
patent: 4217005 (1980-08-01), Takata
patent: 4251117 (1981-02-01), Kubota et al.
Butler Douglas C.
Tokico Ltd.
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