Sealing method and means for fluid control device

Details Sealing method and means for fluid control device Sealing method and means for fluid control device

1987-07-30

1988-09-13

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310332, 310328, 137831, 25112901, H01L 4108

Patent

active

047712040

ABSTRACT:
In a membrane valve fluid flow control device which includes a pair of superimposed surfaces wherein the membrane is interposed between the surfaces under compression and further serves as a seal. A raised rib portion is provided to impact limited areas of the membrane and localize compression along a narrow band apart from and surrounding valve chambers and any associated openings through the surface. The raised rib portion will localize compression forces along a narrow band on the membrane and limit lateral flow of the membrane material to prevent thickening or bulging of the material over the valve seat area.

REFERENCES:
patent: 3935485 (1976-01-01), Yoshida et al.
patent: 4403382 (1983-09-01), Facoetti et al.
patent: 4413202 (1983-11-01), Krempl et al.
patent: 4450375 (1984-05-01), Siegal
patent: 4629926 (1986-12-01), Siegal

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