Fluid-pressure and analogous brake systems – Multiple fluid-receiving devices – Multiple motors
Patent
1975-11-10
1978-02-07
Blix, Trygve M.
Fluid-pressure and analogous brake systems
Multiple fluid-receiving devices
Multiple motors
188195, 188349, 303 22R, B60T 818, B60T 826
Patent
active
040723615
ABSTRACT:
A valve device for use in split liquid pressure vehicle braking systems to control rear brake pressure comprises a plunger assembly in a cavity in a housing, the cavity being closed at one end. The plunger assembly has a central land between two smaller end lands. The central land slides within a central portion of the cavity which is between two smaller portions of that cavity. The central portion and the closed end portion of the cavity are formed in a main valve body and the other cavity portion is formed in another body which is carried by the main valve body. The plunger assembly carries a bar which co-operates with the shoulder between the central portion and the closed end portion of the cavity and with a valve unseating pin to unseat a ball in a passage through the central land. A biasing spring urges the plunger assembly towards the closed end of the cavity against the action upon the plunger assembly of front brake pressure which acts between the plunger assembly and the closed end of the cavity. Liquid pressure is transmitted from the master cylinder to the rear brake operating motor cylinders through those parts of the central cavity portion on either side of the central land when the ball is unseated and not when the ball is seated.
REFERENCES:
patent: 3149886 (1964-09-01), Dorner
patent: 3467440 (1969-09-01), Strien
patent: 3545814 (1970-12-01), Margetts
patent: 3736031 (1973-05-01), Yabuta et al.
patent: 3804468 (1974-04-01), Ishikawa et al.
patent: 3848932 (1974-11-01), Lewis
Automotive Products Limited
Blix Trygve M.
Butler Douglas C.
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