Inflatable tubular structure with spiral seam
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United States of America Patent
Stats
-
Mar 13, 2001
Grant Date -
N/A
app pub date -
Apr 6, 1999
filing date -
Apr 6, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An inflatable structure comprises an inflatable tubular member that is constructed of an elongate, flexible strip of woven fabric that is impervious to air and water. The elongate strip has a first elongate edge and a second elongate edge and is spiraled into a tubular shape such that the first elongate edge is adjacent the second elongate edge to thereby form a spiral seam. A first elongate tape member is thermobonded to an inner surface of the tubular member along the length of the spiral seam for sealing the spiral seam from inside. A second elongate tape member is thermobonded to the outer surface of the tubular member along the length of the spiral seam for reinforcing the spiral seam.
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