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US 4,218,814 AGranted
Method of insulating conduit
AssigneeDart Industries Inc.
InventorNorbert J. Hodapp
Life of this patent
Estimating the term…
Abstract
An elongate flexible tubular sheath has a longitudinal slit therethrough from end to end. The sheath is placed over a conduit, having an outside diameter not smaller than the inside diameter of the sheath. Subsequently, the sheath is tightened about the conduit and the edges of the slit forced together in response to helical twisting of the sheath. Means are provided for retaining the sheath in the helically twisted position.
Claims10
The method of insulating a conduit having an outside diameter and a length including the steps of:
- (a) selecting an elongate flexible tubular sheath having a length and having an inside diameter not greater than the outside diameter of said conduit;
- (b) forming a longitudinal slit through said sheath from end to end;
- (c) encasing said conduit within said sheath;
- and
- (d) rotating said sheath helically relative to said conduit.
2 more elements
Dependencies are inferred from the claim text.