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Automotive seat assembly having an integral tear seam

  • US 6,523,237 B1
  • Filed: 11/21/2000
  • Issued: 02/25/2003
  • Est. Priority Date: 05/21/1998
  • Status: Expired due to Fees
First Claim
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1. A method of integrally forming tear seam (44) within a multilayered seat cover material (24, 26) having at least one outer layer (32) and at least one inner layer (34, 36) by using an ultrasonic welder (46) and a template (48) having a raised ridge (50), said method comprising the steps of;

  • placing the cover material (24, 26) over the template (48) within an inside surface (30) of the inner layer (34, 36) in contact with the raised ridge (50);

    moving the ultrasonic welder (46) adjacent an outside surface (28) of the outer layer (32) in alignment with the raised ridge (50) of the template (48) and wedging the trim cover material (24, 26) between the ultrasonic welder (46) and the raised ridge (50); and

    ultrasonically heating the layer (34, 36) with the ultrasonic welder (46) to form a tear seam (44) having at least one of the inner layers (34, 36).

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