Fluid handling – Systems – Multi-way valve unit
Patent
1979-05-01
1981-01-06
Schwadron, Martin P.
Fluid handling
Systems
Multi-way valve unit
254360, 91428, F16K 1107, B66D 100, F15B 1304
Patent
active
042430607
ABSTRACT:
A fluid control valve is provided for use in conjunction with a fluid device and a source of fluid pressure wherein the fluid device includes an expansible fluid chamber which, upon connection to the fluid pressure source, actuates the fluid device while exhaustion of the fluid pressure from the expansible chamber deactuates the fluid device. The fluid control valve, according to the present invention, comprises a valve member and a housing axially slidably disposed over the valve member. The housing further includes a first fluid port adapted for connection with the fluid pressure source, a second fluid port adapted for connection with the expansible chamber of the fluid device and a third fluid port adapted for connection with a source of low fluid pressure. Resilient means are provided within the housing to retain the housing in a central or neutral position relative to the valve member. The housing fluid ports are fluidly connected with the valve member so that axial movement of the housing relative to the valve member in one axial direction fluidly connects the first and second fluid ports in the housing to thereby fluidly connect the source of fluid pressure to the fluid device expansible chamber. Conversely, axial movement of the housing in the other axial direction fluidly connects the second and third fluid ports so that the fluid device expansible chamber is fluidly connected with the low fluid pressure source to exhaust fluid from the expansible chamber.
REFERENCES:
patent: 1630810 (1927-05-01), Simpson
patent: 3537686 (1970-11-01), McKendrick
patent: 3554091 (1971-01-01), Spyridakis
patent: 3856266 (1974-12-01), McKendrick
patent: 3933388 (1976-01-01), Conboy
patent: 3998432 (1976-12-01), Vldricks et al.
Chambers A. Michael
Parts Handling, Inc.
Schwadron Martin P.
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