US 11,668,025 B2
Conductive yarn/sewing thread, smart fabric, and garment made therefrom
James O Threlkeld, Indian Trail, NC (US)
Assigned to SUPREME CORPORATION, Hickory, NC (US)
Filed by SUPREME CORPORATION, Hickory, NC (US)
Filed on Sep. 27, 2016, as Appl. No. 15/277,397.
Prior Publication US 2018/0087191 A1, Mar. 29, 2018
Int. Cl. D02G 3/44 (2006.01); D02G 3/36 (2006.01)
CPC D02G 3/441 (2013.01) [D02G 3/36 (2013.01); D10B 2101/20 (2013.01)] 14 Claims
 
1. A conductive composite yarn comprising:
a) a core formed of at least one strand of copper of 40 or higher gauge, and a stainless steel wire having a diameter of 1-2 mil;
b) at least one inner cover wrapped around the core in a first direction at a rate sufficient to provide substantially complete coverage of the core by the at least one inner cover, wherein the at least one inner cover is a natural or synthetic yarn;
c) at least one outer cover wrapped around the at least one inner cover, wherein the outer cover is wrapped in a second direction opposite to a direction of the at least one inner cover on which the at least one outer cover is directly wrapped, at a rate sufficient to provide substantially complete cover of the at least one inner cover layer on which the at least one outer cover is directly wrapped;
d) at least one bonding agent applied onto the at least one outer cover; and
e) optionally, a lubricant,
wherein the conductive composite yarn is configured to be sewn using a commercial grade bobbin type sewing machine; and
wherein the conductive composite yarn has a first end and a second end, and one or more leads attached at each end.