Stress modulator ring and microgrooved base for an ammunition cartridge having a plastic case
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United States of America Patent
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-
Feb 23, 1988
Grant Date -
N/A
app pub date -
Apr 22, 1985
filing date -
Apr 22, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An ammunition cartridge has a plastic case and a metal base having a plurality of grooves around the periphery thereof. The plastic case has an interference fit with the base. The plastic creeps into the grooves after being interference fit over the base to relieve the stress in the plastic. A stress modulator ring surrounds the plastic member in the area of the grooves.
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