Method of forming industrial housings
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United States of America Patent
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Dec 30, 2014
Grant Date -
May 16, 2013
app pub date -
Dec 21, 2012
filing date -
Feb 25, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A method of forming a housing which includes roll forming a steel tube radially inwardly with a plurality of rollers each having a rolling axis parallel to the longitudinal axis of the tube, the rollers compressing the tube and forming reduced diameter portions and enlarged diameter portions. The method then includes cutting the tube perpendicular to the longitudinal axis generally midway through an enlarged diameter portion and a reduced diameter portion, forming a plurality of minor image preforms. Finally, the method includes cold working the preforms into the desired shape of the housing and increasing the strength of the steel at least 15% and forming a housing member having enlarged diameter open end and a reduced diameter open end.
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