Method and means for sealing with heat-recoverable foam layer

Details Method and means for sealing with heat-recoverable foam layer Method and means for sealing with heat-recoverable foam layer

1985-08-21

1987-05-19

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 1, 277 26, 277228, 277901, 174152R, 264321, 264345, 4283173, 4283184, F16J 1506, F16L 502, B29D 2700, B29C 2500

Patent

active

046661646

ABSTRACT:
An aperture, for example a duct having a cable passing through it, is sealed by installing a laminate, comprising an adhesive layer, a heater layer, and a heat-recoverable foam layer, the thickness of which increases on heating, into the gap between the duct wall and the cable with the adhesive layer facing both the wall and the cable. On energizing the heater, the foam increases in thickness and forces the adhesive into sealing engagement with the wall and cable.

REFERENCES:
patent: 3420363 (1969-01-01), Blickensderfer
patent: 3439406 (1969-04-01), Wallin
patent: 3542375 (1970-11-01), Renwick
patent: 3634924 (1972-01-01), Blake et al.
patent: 3758916 (1973-09-01), Wetmore
patent: 3775204 (1973-11-01), Thompson et al.
patent: 3793672 (1974-02-01), Wetmore
patent: 4095044 (1978-06-01), Horsma et al.
patent: 4347018 (1982-08-01), Wrightson
patent: 4355664 (1982-10-01), Cook et al.
patent: 4431198 (1984-02-01), Beinhaur et al.

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