Flexible hose, manufacturing method thereof and extruder
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 2, 2004
Grant Date -
Jan 10, 2002
app pub date -
May 30, 2001
filing date -
Jan 11, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A flexible hose which has a hose body made of soft synthetic resin, a reinforcement made of hard synthetic resin wound spirally and joined to the hose body by fusion, and a conductor arranged inside the reinforcement in its longitudinal direction. The conductor does not adhere to the reinforcement and is movable. The hose body is formed by: extruding a tube made of soft resin from a head of an extruder; pressing and flattening the tube to form a strip; and winding the strip spirally with the adjacent side edges joined together.
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Cited Art Landscape
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