Miniature four-way valve

Details Miniature four-way valve Miniature four-way valve

1976-03-01

1977-05-31

Cohan, Alan

Fluid handling

Systems

Multi-way valve unit

13762569, F16K 1102

Patent

active

040263258

ABSTRACT:
A miniature four-way valve, particularly for the control of a pressurized gas, such as air, constructed and arranged so that it can be made in small sizes without excessive expense while being reliable, sturdy and resistive to damage. The valve includes a housing having ports formed therein which accommodate conventional conduits of rather large size, which ports communicate with a central passage containing therein a slidable valve plunger of extremely small size. The inlet port communicates with a chamber disposed in surrounding relationship to the valve plunger, which chamber is defined between a pair of opposed tapered walls having a concave configuration. These walls function as valve seats and coact with a resilient seal ring secured to the valve plunger for creating a sealing engagement similar to a poppet valve. The shifting movement of the plunger, which causes the seal ring to be shifted into sealed engagement with one of the opposed tapered walls, controls the flow of fluid from the inlet port to one of two load ports, and similarly controls the flow of fluid from the two load ports to respective exhaust ports.

REFERENCES:
patent: 2920650 (1960-01-01), Moog, Jr.
patent: 2997065 (1961-08-01), Johnson
patent: 3195574 (1965-07-01), Carls
patent: 3234968 (1966-02-01), Frantz
patent: 3418002 (1968-12-01), Hennells
patent: 3550631 (1970-12-01), Van der Laan
patent: 3794075 (1974-02-01), Stoll et al.

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