Tubing Manufacture
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Aug 28, 2008
app pub date -
Feb 25, 2008
filing date -
Feb 27, 2007
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Apparatus for vulcanising and corrugating rubber tubing includes a mold with a corrugated inner surface. The mold is heated by electrical resistance heating elements. A length of uncured straight tubing is placed in the mold and its external surface is forced into contact with the corrugated mold surface by the combination of a positive gas pressure within the tubing and a negative gas pressure outside the tubing. The tubing is maintained in the heated mold for long enough for it to be vulcanised and take the internal shape of the mold.
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