Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component
Patent
1997-02-18
1999-06-29
Davis, Jenna
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Composite having voids in a component
4283179, 4283193, 4283197, 4283199, 428343, 428354, B32B 518, C09J 702
Patent
active
059166711
ABSTRACT:
An improved gasket particularly suitable for use in sensitive environments is disclosed. The preferred gasket of the present invention comprises at least one layer of a composite material of porous polytetrafluoroethylene (PTFE) polymer and resilient expandable microspheres. The composite material provides a number of significant advantages over existing PTFE and similar clean gaskets, including better seal under less compressive pressure, sufficient resilience to permit reuse, and retained porosity--allowing pressure equalization in the equipment to occur through the gasket itself.
REFERENCES:
patent: 3198856 (1965-08-01), Hammond et al.
patent: 3615972 (1971-10-01), Morehouse, Jr. et al.
patent: 3953566 (1976-04-01), Gore
patent: 4098945 (1978-07-01), Oehmke
patent: 4108806 (1978-08-01), Cohrs et al.
patent: 4153661 (1979-05-01), Ree et al.
patent: 4273806 (1981-06-01), Stechler
patent: 4304713 (1981-12-01), Perelman
patent: 4320076 (1982-03-01), Greenwood
patent: 4335044 (1982-06-01), Hedrich
patent: 4373519 (1983-02-01), Errede et al.
patent: 4483889 (1984-11-01), Andersson
patent: 4663095 (1987-05-01), Battais
patent: 4837251 (1989-06-01), Okey et al.
patent: 4946737 (1990-08-01), Lindeman et al.
patent: 4959395 (1990-09-01), Janda
patent: 4985296 (1991-01-01), Mortimer, Jr.
patent: 4990544 (1991-02-01), Asaumi et al.
patent: 4996097 (1991-02-01), Fischer
patent: 5023279 (1991-06-01), Buckmaster et al.
patent: 5026591 (1991-06-01), Henn et al.
patent: 5061561 (1991-10-01), Katayama
patent: 5110998 (1992-05-01), Muschiatti
patent: 5115103 (1992-05-01), Yamanishi et al.
patent: 5128175 (1992-07-01), Yamanishi et al.
patent: 5132061 (1992-07-01), Lindeman et al.
patent: 5155138 (1992-10-01), Lundqvist
patent: 5209967 (1993-05-01), Wright et al.
patent: 5238621 (1993-08-01), Hagen et al.
patent: 5292578 (1994-03-01), Kolzer
"Microcellular Foams," Plastics Technologies (Feb. 1993) Expancel--Advertisement of Nobel Industries Sweden (date and author unknown).
Polymer Report--K. L. Alderson and K. E. Evans--"The Fabrication of microporous polyethylene having a negative Poisson's ratio" 33 Polymer 4435-38 (1993).
International Search Report for PCT/US94/04910.
Dauber Edwin G.
Hubis Daniel E.
McGregor Gordon L.
Minor Raymond B.
Mortimer, Jr. William P.
Davis Jenna
Lewis White Carol A.
W. L. Gore & Associates, Inc.
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