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Stretchable band-type transducer particularly suited for respiration monitoring apparatus

  • US 4,807,640 A
  • Filed: 11/19/1986
  • Issued: 02/28/1989
  • Est. Priority Date: 11/19/1986
  • Status: Expired due to Term
First Claim
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1. A band securable about an expandable three dimensional object comprising:

  • a first piece of inextensible material defining two surfaces;

    elastic material;

    means for adhesively securing said elastic material to said first piece of material along a substantial portion of the length thereof with said elastic material in a stretched condition when said first piece of material is in a flat condition, said first piece of material defining crosswise puckers when said elastic material is in an unstretched condition for accommodating stretching of said band when said elastic material is stretched;

    a conductor; and

    means for adhesively securing said conductor to said first piece of material, with said conductor extending substantially the length of the band and enclosing a larger circumference upon stretching of said band.

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