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Patent Searching and Data


Title:
VALVE ELEMENT
Document Type and Number:
WIPO Patent Application WO2005072138
Kind Code:
A3
Abstract:
Provided is a valve element (120) for venting fluids, such as gas or liquids, entrapped in a packaging enclosure (100). The valve element includes a base element (122) having an aperture (142) disposed through it and a membrane (124) having a protruding raised portion (132). The membrane is attached to and overlays the base element. The raised portion is selectively configurable between a concave position and a convex position by applying an external force against the apex of the raised portion. When configured in the convex position, the raised portion is spaced apart from the aperture allowing fluid communication therethrough. When configured in the concave position, the raised portion obstructs the aperture preventing fluid communication therethrough. To vent air passing through the aperture into the environment, an expandable channel (152) for providing a clearance is provided between the membrane and the base element.

Inventors:
MILLER RICHARD T (US)
GIESFELDT REBECCA S (US)
Application Number:
PCT/US2005/001236
Publication Date:
December 07, 2006
Filing Date:
January 13, 2005
Export Citation:
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Assignee:
GLAD PRODUCTS CO (US)
MILLER RICHARD T (US)
GIESFELDT REBECCA S (US)
International Classes:
F15C1/00; B65D25/40; B65D30/24; B65D33/01; B65D33/25; B65D35/00; B65D37/00; B65D77/22
Foreign References:
US2604297A1952-07-22
US5513659A1996-05-07
US5584409A1996-12-17
US6662827B12003-12-16
US5326176A1994-07-05
US4805378A1989-02-21
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