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US 4,793,382 AGranted
Assembly for repairing a damaged pipe
AssigneeRaychem Corporation
InventorLaszlo Szalvay
Life of this patent
Estimating the term…
Abstract
An assembly for securing a repair sleeve within a damaged pipe, comprising a tubular repair sleeve, and a shape memory alloy element positioned within the sleeve and having a mandrel on each end with at least a portion of each mandrel extending beyond the sleeve at a respective end of the sleeve, arranged so that when the shape memory alloy element recovers, the mandrels are moved towards one another so that each end portion of the sleeve is caused to expand outwardly.
Claims7
An assembly for securing a repair sleeve within a damaged pipe, comprising:
- (a) a tubular repair sleeve, and
- (b) a shape memory alloy element positioned within the sleeve and having a mandrel on each end with at least a portion of each mandrel extending beyond the sleeve at a respective end of the sleeve;
- arranged so that when the shape memory alloy element recovers, the mandrels are moved towards one another so that each end portion of the sleeve is caused to expand outwardly.
Dependencies are inferred from the claim text.