Rimfire cartridge for a firearm

Details Rimfire cartridge for a firearm Rimfire cartridge for a firearm

2006-03-14

2006-03-14

Carone, Michael J. (Department: 3641)

Ammunition and explosives

Cartridges

Case

C086S019500

Reexamination Certificate

active

07011028

ABSTRACT:
A firearm cartridge with a rimmed metal case having a body portion having a rim and a cylindrical wall portion adjacent to the rim. The body portion has dimensions corresponding to a 22 Long Rifle specification. The case has a tapered shoulder portion contiguous with the first portion, and a neck portion contiguous with the shoulder portion and a defining a mouth. The mouth closely receives a bullet having a diameter less than .22 caliber, and the case has a length significantly greater than 0.66 inch. The case may be formed with a neck that is relatively short compared to the body portion and overall length, to provide improved cartridge trajectory performance.

REFERENCES:
patent: 2371716 (1945-03-01), Snell
patent: 2397370 (1946-03-01), Raven et al.
patent: 2442841 (1948-06-01), Catlin et al.
patent: 3614816 (1971-10-01), Weyhmuller et al.
patent: 4041868 (1977-08-01), Rayle et al.
patent: 5535678 (1996-07-01), Brown
patent: 6192561 (2001-02-01), Bennett
“History of the .22 Rimfires”, Jun. 10, 1999, Internet published, pp. 1 & 2.
“The RCBS.Load Cartridge Designer Utility”, Apr. 30, 2001, Internet published, pp. 1-4.
“The .22 Ammunition Trials”, by V-Shrake, Mar. 21, 2003, Internet published, pp. 1-7.
Advertisement: Aguila® New Products R&D, 17 Aguila.
Product Brochure: CCI® Rimfire Ammunition.

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