Recoverable article
AssigneeRaychem Corporation
InventorAlan Borgstrom
Life of this patent
Estimating the term…
Abstract
A recoverable article includes an inner resilient radially elastomeric tubular member 2 that is held in its expanded configuration by an outer relatively rigid shell 6. The interface between the member 2 and the shell 6 comprises a plurality of circumferentially-spaced parallel strips 4 coated onto the member 2. The strips 4 prevent the shell 6 from bonding to the member 2 in those regions. The shell 6 is castellated with its valleys 12 adjacent the edges of the strips 4. The lands 8 of the castellated shell 6 overlying the strips 4 can be peeled back to permit the resilient member 2 to recover towards its original configuration, for example around a power cable splice.
Claims10
A recoverable article comprising an inner resilient tubular member that is held out in a laterally expanded configuration by engagement with outer holdout means, wherein the holdout means has a first portion that is bonded to the inner member only at peripherally spaced apart regions thereof, and a second portion that is not bonded to the inner member, whereby the first portion of the holdout means is separable from the second portion to allow recovery of the inner member towards its unexpanded configuration.
A method of manufacturing a recoverable article that comprises an inner resilient tubular member that is held out in a laterally expanded configuration by engagement with outer holdout means, comprising the steps of:
- (a) forming a resilient tubular member;
- (b) expanding the tubular member into a laterally expanded configuration;
- (c) applying intermediate strips of material longitudinally at peripherally spaced apart regions to the outer surface of the expanded tubular member, thereby substantially to prevent an outer holdout means from bonding to the tubular member in said regions;
- and
- (d) forming said outer holdout means around the tubular member and the intermediate strips so as to form a bond with the surface of the tubular member not covered by said intermediate strips, and such that the outer holdout means is relatively thin at the edges of each intermediate strip, whereby regions of the outer holdout means overlying the intermediate strips may subsequently be removed thereby to allow the tubular member to recover towards its unexpanded configuration.
Dependencies are inferred from the claim text.