Flash hole closure for primer battery cups
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United States of America Patent
Stats
-
May 27, 1986
Grant Date -
N/A
app pub date -
Nov 9, 1984
filing date -
Nov 9, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apparatus and method for covering flash holes in a primer battery cup where the anvil is formed integrally with the battery cup. A tooling apparatus including a tubular foiling pin, and a cutting die plate which, in cooperation with the outside rim of the primer battery cup, blanks out an imperforate, covering-medium disk. As the tubular foiling pin continues to descend into the battery cup, the paper is pierced and slit by the anvil point of the battery cup. The blanked and now perforated disk is inserted further into the battery cup by the foiling pin and seated over the flash holes at the bottom of the cup around the anvil.
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