Brake pressure control valves with fluid pressure responsive val

Details Brake pressure control valves with fluid pressure responsive val Brake pressure control valves with fluid pressure responsive val

1975-02-19

1977-09-20

Blix, Trygve M.

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

188349, 303 22R, B60T 818, B60T 826

Patent

active

040493237

ABSTRACT:
A pressure control assembly comprises a control valve set for controlling communication between an inlet and an outlet, a control spring acting in a sense to resist closure of the valve set and a device for varying the control force of the control spring acting on the valve set. The device for varying the control force may comprise a differential pressure responsive member which moves in response to a differential pressure to move an abutment engaging the spring between normal and actuated positions to compress or expand the spring and thus vary its force.

REFERENCES:
patent: 2923576 (1960-02-01), Seale
patent: 3143127 (1964-08-01), Frost
patent: 3276470 (1966-10-01), Griffing
patent: 3459000 (1969-08-01), Oberthur
patent: 3467440 (1969-09-01), Strien
patent: 3736031 (1973-05-01), Yabuta et al.
patent: 3790221 (1974-02-01), Fulmer
patent: 3804468 (1974-04-01), Ishikawa et al.
patent: 3850273 (1974-11-01), Murakami

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