Fluid pressure proportioning valve and plug member therefor

Details Fluid pressure proportioning valve and plug member therefor Fluid pressure proportioning valve and plug member therefor

1981-05-21

1983-11-01

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

188349, 303 84A, B60T 826, B60T 1134

Patent

active

044127022

ABSTRACT:
A fluid pressure proportioning valve (48), particularly of the type which is used in the hydraulic braking systems of automotive vehicles, includes a plug member (28) movably carrying a piston member (50). The piston member (50) defines a through bore (88) communicating pressurized fluid to an outlet on the plug member (28). The piston member also carries a valve member (116) opening and closing the through bore (88) in response to reciprocation of the piston member (50). A lip seal (62), spring seat (100), and a coil spring (110) are carried by the piston member (50). The plug member (28), piston member (50), valve member (116), lip seal (62), spring seat 100, and coil spring 110, comprise a unitary subassembly (142) which may be assembled with a housing providing a bore for receiving the coil spring (110) and lip seal (62) and providing an inlet communicating pressurized fluid from a master cylinder (10). The unitary subassembly (142) incorporates virtually all component parts, the dimension of which affect the proper operation of the fluid pressure proportioning valve. As a result, the dimensional tolerances of the housing may be relaxed without adverse effect upon the proportioning valve (48).

REFERENCES:
patent: 3736031 (1973-05-01), Yabuta et al.
patent: 3836204 (1974-09-01), Van Wicklin, Jr.
patent: 3892445 (1975-07-01), Oberthur
patent: 3964795 (1976-06-01), Mathues
patent: 3975059 (1976-08-01), Orzel
patent: 3977731 (1976-08-01), Kasahara
patent: 4201054 (1980-05-01), Bainbridge
patent: 4213655 (1980-07-01), Brademeyer
patent: 4281880 (1981-08-01), Gaiser et al.
patent: 4284308 (1981-08-01), Hayashida
patent: 4335922 (1982-06-01), Berisch et al.

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