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Panel

  • US 6,886,890 B2
  • Filed: 06/07/2002
  • Issued: 05/03/2005
  • Est. Priority Date: 06/07/2002
  • Status: Expired due to Fees
First Claim
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1. A panel comprising:

  • an envelope of resilient material, said envelope having an opening with a fastener for closing the envelope; and

    an envelope support frame being substantially rigid and formed in a closed loop, said envelope support frame being positioned inside said envelope and tensioning the resilient material of the envelope in a plurality of contiguous tension zones wherein each tension zone is stretched to a predetermined tautness that is different than the tautness of each immediately adjacent tension zone;

    wherein said fastener is closed to envelop the envelope support frame with the resilient material.

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