Method for fabricating a dished hollow body possessing a linear or helical inner toothing
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United States of America Patent
Stats
-
Oct 10, 1989
Grant Date -
N/A
app pub date -
Sep 17, 1987
filing date -
Sep 18, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
According to the well known Grob method, there is fabricated on a mandrel provided with outer or external toothing or teeth a substantially dished or pot-shaped hollow body with corresponding inner or internal toothing or teeth. This fabrication operation starts with a blank comprising an at least partial web portion or dish base and a rim portion or dish rim projecting in a substantially tube-like or tubular configuration from the web portion or dish base. As seen in longitudinal section, this blank possesses a rounded or arcuate portion in the transition region or zone between the rim portion or dish rim and the web portion or dish base. This rounded or arcuate portion has a mean radius of curvature which is at least as large as the wall thickness of the rim portion or dish rim of the blank.
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