Spinning method for forming a diameter reduced portion
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United States of America Patent
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Jan 28, 2014
Grant Date -
Feb 2, 2012
app pub date -
Jan 5, 2010
filing date -
Jan 23, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
Provided is a spinning method of reducing a diameter of a work piece pipe body with processing rollers disposed on an outer surface of the work piece pipe body, the processing rollers being configured to be relatively revolved around the work piece pipe body, wherein, when the processing rollers are axially reciprocated while being moved in a radius direction of the work piece pipe body, wherein the diameter reducing process with the processing rollers is performed under a state in which a wound body formed of an elastic sheet-like material is inserted as a core body into the inside of a portion of the work piece pipe body to be subjected to the diameter reducing processing.
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