Method of fixing flange to peripheral edge of a disc spring
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United States of America Patent
Stats
-
Aug 25, 1992
Grant Date -
N/A
app pub date -
Jan 16, 1990
filing date -
May 25, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A cone-shaped disc spring having a central circular portion, a peripheral portion concentric with the circular portion, and an intermediate portion connecting the central circular portion with the peripheral portion, the central circular portion and said peripheral portion being in planes spaced from each other in a direction perpendicular to the planes, the intermediate portion being corrugated and having at least two spiral corrugations extending from two points spaced around the perimeter of the circular portion, said points being at equal angular intervals from each other, each spiral corrugation having an equal width over the entire length thereof. A method of placing a flange over the peripheral edge of the disc spring involving using punches to form an L-shaped flange blank of the peripheral edge in a series of steps.
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