Recoverable sleeve assembly

Details Recoverable sleeve assembly Recoverable sleeve assembly

H - Electricity

02

G

189/13

H02G 1/16 (2006.01) F16L 45/00 (2006.01) F16L 55/16 (2006.01) F16L 55/17 (2006.01) F16L 55/18 (2006.01) H01B 17/58 (2006.01)

Patent

CA 1159377

ABSTRACT OF THE DISCLOSURE A recoverable sleeve assembly is disclosed having an inner elastomeric tube and an outer rigid tube surrounding and secured to the inner tube holding the inner tube in outwardly stretched condition and wherein the outer tube extends axially beyond and covering at least one end of the inner tube and secured to that end of the inner tube. The end of the outer tube extending beyond the end of the inner tube has a thickness equal to the total thickness of the inner tube plus the thickness of that portion of the outer tube that surrounds the inner tube. The outer tube is a rigid thermosetting adhesive polyurethane comprising a polyester polyol reacted with an isocyanate whereby the outer tube is sufficiently adhesive to hold the inner tube in outwardly stretched condition but will peel from the inner tube upon impact or force or application of heat without need for a solvent. The polyester polyol is disclosed as trimethylol propane branched glycol adipate polyol or polycaprolactone polyol modified with 1,4 butanediol reacted with the isocyanate. The sleeve is applied around a substrate, and the outer tube is fractured by impact of force to allow the inner tube to shrink and the fragments of the outer tube to peel from the inner tube.

368387

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