POLYMER CARTRIDGE WITH ENHANCED SNAPFIT METAL INSERT AND THICKNESS RATIOS

A cartridge has a polymer case with a mouth, a neck having a neck thickness (Tn), a shoulder, and a body having a case thickness (Tc). The body has a flat portion comprising a minimum thickness, a pull thickness (Tp), and a dip comprising a dip thickness (Tb). The cartridge also includes an insert a...

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Bibliographische Detailangaben
Hauptverfasser: PADGETT, Lanse, SANNER, Mark A, CALDWELL, Ernest Ford, HARDING, Gerould, PADGETT, Charles, WALL, Christopher
Format: Patent
Sprache:eng ; fre
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Beschreibung
Zusammenfassung:A cartridge has a polymer case with a mouth, a neck having a neck thickness (Tn), a shoulder, and a body having a case thickness (Tc). The body has a flat portion comprising a minimum thickness, a pull thickness (Tp), and a dip comprising a dip thickness (Tb). The cartridge also includes an insert attached to the polymer case opposite the shoulder. The insert can a bulge engaging the dip to maintain the insert on the polymer case. Tb and Tn are related by 1.0 ≤ Tb/Tn ≤ 1.5 or just