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US 4,455,041 AGranted
Heat recoverable composite coupling device with tapered insert
AssigneeRaychem Corporation
InventorCharles L. Martin
Life of this patent
Estimating the term…
Abstract
Described herein are heat recoverable composite couplings comprising an outer, tubular heat-shrinkable sleeve and a hollow insert member adapted to receive plural substrates. The insert member has a tapered surface to allow it to accommodate substrates of different sizes. Recovery of the outer member forces the insert member into secure contact with the substrate forming a union between the substrates.
Claims9
A composite coupling device for joining cylindrical substrates which comprises:
- (a) a tubular heat-recoverable metallic compression sleeve;
- and
- (b) a hollow tubular metallic insert sized for concentric disposition within said sleeve adapted to contact and form a secure connection between said cylindrical substrates when said sleeve is heated above its transition temperature, said sleeve effecting joinder of the substrates by deforming the insert when so heated, at least one principle surface of said insert being tapered and wherein said sleeve has a relatively uniform inside diameter and said insert has a relatively uniform outside diameter and an inside diameter that tapers from a maximum at either end to a minimum at about its mid-point.
Dependencies are inferred from the claim text.