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Balloons and balloon valves

  • US 5,482,492 A
  • Filed: 01/10/1994
  • Issued: 01/09/1996
  • Est. Priority Date: 01/10/1994
  • Status: Expired due to Fees
First Claim
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1. A balloon comprising:

  • a pair of overlapping balloon film layers joined together so as to form a vessel for containing a pressurized gas;

    first and second valve layers of flexible valve material disposed between the balloon film layers in at least partially overlapping relationship;

    means for joining said first and said second valve layers together to form a double-ended hollow tubular valve having an inlet end communicating outside the balloon and an outlet end in the vessel interior, for passing pressurized gas to the vessel interior;

    said valve layers having free ends at the inlet end of the valve, with at least one free end including a free edge divided into at least two unconnected parts, each with a portion of said free edge, to form a layer with at least two adjacent free edge portions at the inlet end of the valve; and

    said valve layers being joined to respective balloon film layers adjacent the inlet end of the valve to fix the inlet end of the valve in position.

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