Heat-sealed inflatable article, and method of making the same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Oct 8, 2002
Grant Date -
N/A
app pub date -
Nov 7, 2000
filing date -
Nov 7, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An inflatable structure comprising an inflation compartment defining an enclosed interior volume and an anti-reflux valve having an outlet end positioned in the interior volume. The anti-reflux valve includes an elongate inflation passage including opposedly facing film layers that are bonded to one another at their edges to form an interior gas flow channel. The elongate inflation passage is bonded to the inflatable compartment to form an opening for introduction of gas into the passage, for inflation of the inflation compartment, and arranged so that upon termination of gas flow into the interior volume, after pressure in the interior volume has been raised above exterior pressure on the inflatable compartment, gas pressure in the interior volume collapses the opposedly facing film layers against one another to form a seal against the interior volume gas pressure and maintain the inflation compartment in an inflated state.
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