Controlled growth can with two configurations
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United States of America Patent
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-
Jun 20, 2000
Issued Date -
N/A
app pub date -
Nov 25, 1997
filing date -
May 26, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A drawn and ironed can having a generally cylindrical side wall and an integral bottom including two annular rims is provided. The bottom of the can has a reduced volume configuration, wherein the upright can rests on an outer annular rim known as the heel, and an expanded volume configuration, wherein the upright can rests on an inner annular rim known as the nose. When a can in the reduced volume configuration is subject to an elevated internal pressure substantially less than the maximum working pressure, a portion of the can bottom comprising the nose moves axially downwardly relative to the rest of the can to serve as a new base, thus transitioning the can into the expanded volume configuration.
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