Metal pipe expander
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jan 1, 2002
Grant Date -
N/A
app pub date -
Nov 7, 2000
filing date -
Nov 8, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A metal pipe expander which is inserted into a metal pipe and driven to move in the axial direction of the metal pipe by a liquid pressure has an expanding section and a pressure receiving section. The expanding section has a conical portion of which a small diameter portion is directed to a front side. The pressure receiving section has a cup shaped portion opened to the rear side, the outer surface of which is in slide contact with an inner surface of the metal pipe after it is expanded in diameter. The pressure receiving section is provided at a rear end of an expanding section.
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