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CARTRIDGE AND A METHOD OF PRODUCING THE SAME

  • US 3,749,020 A
  • Filed: 08/30/1971
  • Issued: 07/31/1973
  • Est. Priority Date: 09/08/1970
  • Status: Expired due to Term
First Claim
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1. A cartridge comprising:

  • a case having a cylindrical main body portion closed at the rear end thereof and containing a propellant charge, a cylindrical mouth portion of a diameter less than the diameter of said main body portion, and a hollow frusto-conical neck portion joining said main body portion and said mouth portion;

    a holder positioned within said case and having a cylindrical sleeve portion of an outer diameter to contact the interior of said mouth portion of said case, the forward end of said sleeve portion having an annular flange extending outwardly therefrom abutting the forward edge of said mouth portion of said case, the rear end of said sleeve portion merging into a flexible rearwardly converging frusto-conical portion, the length of said sleeve portion being dimensioned such that the point of juncture between said sleeve portion and said frusto-conical portion is positioned rearwardly of the juncture of said neck and mouth portions of said case when said flange abuts said edge of said mouth portion of said case; and

    a projectile positioned in said holder in contact with the inner periphery of said sleeve portion, said projectile having adjacent the rear end thereof an annular groove the bottom edge of said frusto-conical portion fitting in said groove, said rear end of said projectile deforming said flexible frustoconical portion of said holder outwardly into compresSion against the inner periphery of said neck portion of said case.

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