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Fabric valve

  • US 6,715,786 B1
  • Filed: 12/27/2001
  • Issued: 04/06/2004
  • Est. Priority Date: 12/27/2001
  • Status: Expired due to Fees
First Claim
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1. A fabric valve comprising:

  • a fabric blank having a top edge, a left edge, a bottom edge, and a right edge, wherein a Z-fold is created along the right edge to result in a Z-folded fabric blank, wherein the Z-folded fabric blank is folded in half along a first traverse fold line that is parallel to the top and bottom edges to result in a bi-folded fabric blank, wherein the bi-folded fabric blank is further folded in half along a second traverse fold line that is parallel to the top and bottom edges and the first traverse fold line to result in a quad-folded fabric blank;

    a first line of stitches parallel to the second traverse fold line, wherein the first line of stitches secures a portion of the Z-fold at the second traverse fold line; and

    a second line of stitches parallel to the first line of stitches, wherein the second line of stitches secures another portion of the Z-fold at the first traverse fold line, the top edge, and the bottom edge, wherein a fluid is restricted to flow through the quad-folded fabric blank substantially only in one direction.

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