Fluid-pressure and analogous brake systems – Multiple fluid-receiving devices – Multiple motors
Patent
1975-11-06
1976-11-16
Reger, Duane A.
Fluid-pressure and analogous brake systems
Multiple fluid-receiving devices
Multiple motors
B60T 826
Patent
active
039920631
ABSTRACT:
A brake pressure distribution valve includes a housing having a cavity formed therein. First and second pistons are movably mounted in the housing, each being resiliently urged in opposite directions. The second piston is mounted on the first piston for relative movement therewith. A retainer on the first piston can engage the second piston for unitary movement of both pistons. A first seal is provided to sealingly separate a first atmospheric portion at one end of the cavity from a pressurized fluid portion of the cavity. A second seal is provided to sealingly separate a second atmospheric portion at the other end of the cavity, opposite the one end, from the pressurized fluid portion. Ports in the housing permit pressurized fluid into and out of the pressurized fluid portion of the cavity. A passage may be provided axially through the first piston to interconnect the first and second atmospheric portions of the cavity. The valve may be used in a vehicle brake system including a master cylinder, front and rear brakes and conduit interconnecting the master cylinder with the brakes. The valve may be interconnected with the conduit between the master cylinder and the front brakes to predeterminately control the flow of the pressurized fluid to the front and/or the rear brakes to proportion the outlet pressure of the valve at a predeterminately varying rate in relation to the inlet pressure thereof.
REFERENCES:
patent: 3290882 (1966-12-01), Oberthur
patent: 3473849 (1969-10-01), Smith et al.
patent: 3488095 (1970-01-01), Rath
patent: 3492052 (1970-01-01), Klimek
patent: 3738708 (1973-06-01), Kawaguchi et al.
patent: 3880471 (1975-04-01), Lewis
Bell James R.
Reger Duane A.
Wagner Electric Corporation
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