Valve device

Details Valve device Valve device

1985-02-28

1987-09-29

Noland, Tom

Measuring and testing

Sampler, sample handling, etc.

Analyzer supplier

7386372, 422103, 137863, 251331, G01N 110

Patent

active

046961950

ABSTRACT:
A valve including a valve body having a surface with a plurality of orifices with a resilient closure membrane adjacent thereto is disclosed. The membrane is positioned to yield in response to a pressure differential so as to permit flow between respective ports. A male closure member is mounted to selectively urge the membrane into contact with the periphery of an orifice in order to prevent liquid flow therethrough in accordance with a desired flow arrangement. Further refinements include spring biasing of the closure mechanism, which in one construction has a movable carriage provided with a roller.

REFERENCES:
patent: 766420 (1904-08-01), Calley
patent: 3019815 (1962-02-01), Lenardon et al.
patent: 3045702 (1962-07-01), Nakata
patent: 3085440 (1963-04-01), Guenther et al.
patent: 3339582 (1967-09-01), Karas
patent: 3368385 (1968-02-01), Harvey, Jr.
patent: 3477693 (1969-11-01), Bezonis
patent: 3787026 (1974-01-01), Lazar
patent: 4304257 (1981-12-01), Webster
patent: 4537387 (1985-08-01), Danby et al.
patent: 4597412 (1986-07-01), Stark

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