Fluid handling – Self-proportioning or correlating systems – Self-controlled branched flow systems
Patent
1995-03-06
1997-08-05
Hepperle, Stephen M.
Fluid handling
Self-proportioning or correlating systems
Self-controlled branched flow systems
137510, 137895, 137907, G05D 1103
Patent
active
056532512
ABSTRACT:
A linear sheath valve having a valve platform and a conforming cover. The valve platform can have inlet and outlet channels to carry liquid into and out of the valve. An elastomeric membrane is held under tension between the cover and the valve platform so as to control the flow of liquid between channels. The cover includes an expansion area on the cover surface adjacent to the membrane and between the inlet and outlet. Liquid flows through the valve when it is drawn by a vacuum. The vacuum operates on both the flow path exit, but also above the membrane, lifting it to open the flow path. Discontinuance of the vacuum allows the membrane to seal the inlet and outlet, thus again preventing any flow between them.
REFERENCES:
patent: 1109682 (1914-09-01), Kassander
patent: 1908357 (1933-05-01), Hornbruch
patent: 4852851 (1989-08-01), Webster
patent: 5076322 (1991-12-01), Choksi
Hepperle Stephen M.
ReSeal International Limited Partnership
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