Patent ID: 11920266
Assignee: FEDERAL-MOGUL POWERTRAIN LLC
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC D | IPC D

Claim 14:
15. A method of constructing a corrugated textile sleeve, comprising:
weaving a flexible wall of including warp yarns, extending lengthwise along a longitudinal axis between opposite ends of said wall, and weft yarns, extending generally transversely to the warp yarns, at least some of said weft yarns being activatable weft yarn and at least some said weft yarns, adjacent said activatable weft yarn, being substantially non-activatable weft yarn;
forming said wall having a tubular configuration; and
activating the activatable weft yarn and causing the substantially non-activatable weft yarn to form crests, having a first diameter, spaced axially from one another and causing the activated weft yarn to be shrunken in length to form valleys, having a second diameter less than the first diameter, with at least some of the valleys extending between the crests to provide the wall with a corrugated shape.