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Sheet heater

  • US 7,244,914 B2
  • Filed: 04/08/2003
  • Issued: 07/17/2007
  • Est. Priority Date: 04/08/2002
  • Status: Expired due to Term
First Claim
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1. A sheet heater comprising:

  • a base material having a mesh structure, said mesh structure is made up of small openings of densely braided threads and large openings formed among the small openings, said small openings being made of a plurality of the threads adjacent to said large openings, wherein the small openings are arranged in at least a central portion of the mesh structure; and

    a heating wire, said heating wire being fixed to said threads by sewing,wherein a diameter of each of the large openings is shorter than a sewing pitch for fixation of said heating wire.

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