Method of making a one-piece piston for an internal-combustion engine
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United States of America Patent
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May 5, 1987
Grant Date -
N/A
app pub date -
Jan 24, 1986
filing date -
Jan 24, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A one-piece piston is produced by die pressing in a single step, a previously forged blank to bend an annular cylindrical collar thereon and at the same time form a fire rib between two lugs which are pierced in the die-pressing tool so that eyes are formed in the lugs and the latter are calibrated by the piercing operation.
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