Seal for a joint or juncture – Process of static sealing – Forming in place
Patent
1997-09-08
1999-11-09
Brittain, James R.
Seal for a joint or juncture
Process of static sealing
Forming in place
277314, F16J 1514
Patent
active
059799021
ABSTRACT:
A cavity sealing article for use in a longitudinally extending cavity defined by cavity walls, the cavity having a cross-section within the cavity walls which is to be sealed at a predetermined location, comprises: (a) a driver comprising a crosslinked foamable polymer, the driver having a size, shape, and expansion ratio on foaming such that, when foamed within the cross-section of the cavity at the predetermined location, it substantially but incompletely occupies the cross-section of the cavity; and (b) a sealer comprising an uncrosslinked foamable polymer in intimate contact with the driver and surrounding the driver in the cross-section of the cavity, the sealer having a size, shape, and expansion ratio on foaming such that, when the cavity sealing article as a whole is foamed, the foamed sealer is forced into intimate and sealing contact with the cavity walls.
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Chang Rong J.
Dawes Keith
Brittain James R.
Burkard Herbert G.
Chao Yuan
Nguyen Lewis
Raychem Corporation
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