Flexible hoses and joint structures thereof
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United States of America Patent
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-
Sep 12, 2000
Grant Date -
N/A
app pub date -
Jan 20, 1999
filing date -
Jan 20, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A flexible hose 1 of the present invention is formed by blocking and interrupting a spiral groove 5 inside a hill 2 of a corrugated hose end portion 1a or 1b (inner surface helical concave portion) to form a closed section 4, or by blocking and interrupting a spiral groove 5 formed outside a valley 3 of a corrugated end portion 1a or 1b of a hose (outer surface helical concave portion) to form a blocked section 4. The flexible hose of the present invention can provide an improved air tightness when connected to a joint, requiring no troublesome steps or treatments.
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