Electric heating/warming fabric articles
First Claim
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1. A fabric article adapted to generate heat upon application of electrical power, comprising:
- a fabric body knitted or woven of non-conductive yarns, a plurality of spaced apart electrical resistance heating elements in the form of conductive yarns knitted or woven into said fabric body together with the non-conductive yarns and extending generally between opposite edge regions of said fabric body, and electrical conductor elements extending generally along said opposite edge regions of said fabric body and adapted to connect said plurality of spaced apart electrical resistance heating elements in a parallel electrical circuit to a source of electrical power, said fabric body having a technical face and a technical back, with fleece on at least one of said technical face and said technical back formed by finishing non-conductive yarns of said at least one of said technical face and said technical back in manner to avoid damage to electrical conductivity performance of the conductive yarns knitted or woven together with the non-conductive yarns in said fabric body.
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Abstract
A fabric article that generates heat upon application of electrical power is formed, for example, by knitting or weaving, to form a fabric prebody. An electrical resistance heating element in the form of a conductive yarn is incorporated into the fabric prebody, the electrical resistance heating elements extending between opposite edge regions of the fabric. Conductive elements are provided for connecting the electrical resistance heating elements to a source of electrical power.
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Citations
55 Claims
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1. A fabric article adapted to generate heat upon application of electrical power, comprising:
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a fabric body knitted or woven of non-conductive yarns, a plurality of spaced apart electrical resistance heating elements in the form of conductive yarns knitted or woven into said fabric body together with the non-conductive yarns and extending generally between opposite edge regions of said fabric body, and electrical conductor elements extending generally along said opposite edge regions of said fabric body and adapted to connect said plurality of spaced apart electrical resistance heating elements in a parallel electrical circuit to a source of electrical power, said fabric body having a technical face and a technical back, with fleece on at least one of said technical face and said technical back formed by finishing non-conductive yarns of said at least one of said technical face and said technical back in manner to avoid damage to electrical conductivity performance of the conductive yarns knitted or woven together with the non-conductive yarns in said fabric body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53)
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54. A fabric article adapted to generate heat upon application of electrical power, formed by a method comprising the steps of:
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joining, by a reverse plaiting circular knitting process, a non-conductive stitch yarn and a non-conductive loop yarn to form a fabric prebody, the loop yarn overlaying the stitch yarn at a technical face and forming in loops at a technical back of the fabric prebody, at spaced-apart intervals, incorporating into the fabric prebody as the stitch yarn an electrical resistance heating/warming element in the form of a conductive yarn, forming the fabric prebody into a fabric body, with the electrical resistance heating/warming elements extending between opposite edge regions of the fabric body, in a manner to avoid damage to electrical conductivity performance of the electrical resistance heating/warming elements, finishing non-conductive yarns of at least one of said technical face and said technical back of the fabric body to form a fleece surface region, and providing conductive elements for connecting the electrical resistance heating/warming elements, in parallel, to a source of electrical power. - View Dependent Claims (55)
finishing non-conductive yarns of the technical face of the fabric body, in a manner to avoid damage to electrical conductivity performance of the electrical resistance heating/warming elements, to form a first fleece surface region, and finishing non-conductive yarns of the technical back of the fabric body in a manner to avoid damage to electrical conductivity performance of the electrical resistance heating/warming elements to form a second fleece surface region.
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Specification