Electric heating/warming fibrous articles
Patent 6414286 Issued on July 2, 2002. Estimated Expiration Date: 
February 23, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 23, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorsApplicationNo. 791237 filed on 02/23/2001US Classes:219/545, Resistive element interwoven with fabric support219/211, Apparel219/212, Bed covering (e.g., blanket)219/529, Cloth or other fabric219/549FlexibleExaminersPrimary: Walberg, TeresaAssistant: Dahbour, Fadi H. Attorney, Agent or FirmInternational ClassH05B 003/34AbstractA fibrous article that generates heat upon application of electrical power is formed, for example, by joining stitch and loop yarns to form a fibrous prebody, with the loop yarn overlaying the stitch yarn at a technical face and forming loops at a technical back of the fabric prebody. An electrical resistance heating element, e.g., in the form of conductive elements, is joined with the stitch and loop yarns in the prebody at symmetrical and/or asymmetrical spaced-apart intervals as the stitch yarn, the electrical resistance heating elements extending between opposite edge regions of the fibrous article and conductor elements, e.g. located along edge regions, connect the electrical resistance heating elements to a source of electrical power. The technical face and/or the technical back of the fabric body may have fleece formed by finishing non-conductive fibers of the stitch yarn and/or loop yarn in a manner to avoid damage to electrical conductance of the electrical resistance heating elements. Preferably, the conductive elements have the form of a conductive yarn with one or more of: a core of insulating material, an electrical resistance-heating element, e.g., about the core, and a sheath material surrounding the electrical resistance-heating element (and core).Field of SearchResistive element interwoven with fabric supportApparel Bed covering (e.g., blanket) Static structure (e.g., building pavement, etc.) Chair, bed, or other body-supporting means Body-supported (e.g., human body) Flexible or resilient (e.g., warming pad) Cloth or other fabric With resistive-element attaching, securing or electrical insulation means Comprising coating printed or deposited on core sheath or support means Flexible Articles Garments Incorporated unknitted materials Fleece or pile type Warp Fleece or pile type Warp Differential pile length or surface | |
