Method of making rim having opposite hollow flanges
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United States of America Patent
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Issued Date -
Jul 29, 2004
app pub date -
Aug 26, 2003
filing date -
Jan 27, 2003
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Disclosed is a method of making a rim having hollow flanges formed on its opposite annular edges. It comprises the steps of: cutting an elongated metal band of a fixed width to provide metal strips of a predetermined length; rolling a selected metal strip into a ring; welding the opposite ends of the ring; curling each annular edge of the ring outward; and roll-forming the main annular part to define a well along the center line of the main annular part. The method further comprises the steps of: bending the opposite bead areas toward the center well; closing the gap between each curl edge and the counter bead area; and unbending the opposite bead areas into the final rim shape.
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