Static seal
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United States of America Patent
Stats
-
Mar 23, 1993
Grant Date -
N/A
app pub date -
Aug 6, 1991
filing date -
Aug 6, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A static seal capable of accommodating significant lack of flatness comprises a PTFE envelope 1, within which is a filling 5 consisting of wound or nested turns of thin metal strip 7 perforated to provide resiliance in the direction of their width. Individual turns can move or collapse to different extents, thereby accommodating lack of flatness of surfaces to be sealed. Turns of fluid-impervious material may be distributed among the turns of perforated strip.
First Claim
Family
International Classification(s)
Cited Art Landscape
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