H - Electricity – 01 – B
Patent
H - Electricity
01
B
337/27
H01B 7/06 (2006.01) H01B 7/08 (2006.01)
Patent
CA 2001324
Abstract Cordage which may be used for any of the commonly marketed lengths of retractile cords comprises an array of a plurality of conductors each insulated with a suitable plastic material. The array of conductors is enclosed in inner and outer jackets. The inner jacket comprises a polyvinyl chloride (PVC) plastic material, for example, and has a thickness of about 0.015 inch. Covering the inner jacket is an outer jacket comprising a polyvinyl chloride plastic material having a thickness of about 0.005 inch and having a colorant constituent. The PVC composition of the inner layer is such that it is a less expensive composition than that of the outer layer. Enclosing the outer jacket is a layer which comprises a top coating material. The top coating material provides the cordage with enhanced retractibility and prevents discoloration as well as plasticizer migration from the outer jacket.
Dougherty Timothy Stephen
Streich Robert E.
American Telephone And Telegraph Company
Kirby Eades Gale Baker
LandOfFree
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