Method of making pre-expanded braided sleeving
OwnerWalter A. Plummer, Jr.inventor
Life of this patent
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Abstract
Disclosed is a method of making pre-expanded braided sleeving from flexible strands of either conductive or nonconductive filaments, or a combination thereof, along with entrapped warp filaments of heat shrinkable material. The warp filament material is commonly known as heat reactive material and, when briefly subjected to heat below its fusion temperature, shrinks in the order of 30% to 50% of its length and very substantially expands the sleeving thereby greatly expediting the assembly thereof over an elongated object. Thereafter the sleeving is readily contracted into a snug fit with the object upon being tensioned between its opposite ends.
Claims8
An improved method of processing expandable-contractable braided sleeving which comprises:
- spirally interweaving multiple strands of flexible filaments into a tubular sleeve with at least one filament of resilient heat reactive material extending lengthwise of said sleeving and entrapped between at least some of said spirally interwoven strands;
- and
- heating said sleeving containing said filament of heat reactive material to a sufficient temperature to contract said sleeving axially thereof and to expand said sleeving girthwise and to retain said sleeving axially contracted and girthwise expanded, until said sleeving is placed in tension.
Dependencies are inferred from the claim text.