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Device for laying a resistance wire in an undulating shape on the interposed thermoplastic film of a laminated glazing

  • US 5,282,301 A
  • Filed: 01/24/1992
  • Issued: 02/01/1994
  • Est. Priority Date: 01/24/1991
  • Status: Expired due to Term
First Claim
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1. A device for laying and attaching a resistance wire having an undulating shape to a thermoplastic support film for the production of a laminated glazing that can be heated electrically, comprising:

  • a heated pressure roller mounted so as to roll over the support film to embed the resistance wire in the film;

    a support for a wire bobbin;

    a wire guide device; and

    a pair of wire-deforming gears mounted between said wire bobbin support and said heated pressure roller, said pair of wire-deforming gears engaging one another to deform wire fed therebetween, wherein at least one of said wire-deforming gears is driven by said heated pressure roller with a predetermined speed ratio such that a peripheral speed of said wire-deforming gears is less than a peripheral speed of said pressure roller.

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