Pipe cutting apparatus
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United States of America Patent
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-
Mar 16, 1999
Grant Date -
N/A
app pub date -
Oct 24, 1996
filing date -
Oct 31, 1995
priority date (Note) -
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status (Latency Note)
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Abstract
A cam mounting gear having a number of teeth smaller by one than the number of teeth of a main gear which is driven to rotate is disposed in parallel to the main gear, and a cam having a tapered face formed thereon such that the thickness thereof gradually increases along an inner periphery thereof is disposed on an inner wall of the cam mounting gear. A main holder having a cutter blade and a bearing which contacts with the cam is supported for rotation on a flat face portion of the main gear. As rotation of the main gear is transmitted to the cam mounting gear via a pinion, the bearing of the main holder is driven to roll on the tapered face of the cam, and thereupon, the cutter blade is displaced in a direction toward the center of the apparatus to cut a cutting object pipe located at a central location of the apparatus.
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