Method of making a primer insert for use in polymer ammunition
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F42B-033/00
F42B-005/307
F42C-019/08
출원번호
US-0406844
(2017-01-16)
등록번호
US-9933241
(2018-04-03)
발명자
/ 주소
Burrow, Lonnie
출원인 / 주소
True Velocity, Inc.
대리인 / 주소
The Law Offices of Chainey P. Singleton, PLLC
인용정보
피인용 횟수 :
10인용 특허 :
127
초록▼
One embodiment of the present invention provides a polymeric ammunition cartridge and methods of making and using the same. The cartridge includes a substantially cylindrical insert connected to a substantially cylindrical polymeric middle body. The substantially cylindrical insert includes a top su
One embodiment of the present invention provides a polymeric ammunition cartridge and methods of making and using the same. The cartridge includes a substantially cylindrical insert connected to a substantially cylindrical polymeric middle body. The substantially cylindrical insert includes a top surface opposite a bottom surface and a substantially cylindrical coupling element that extends from the bottom surface, a primer recess in the top surface that extends toward the bottom surface, a primer flash hole positioned in the primer recess to extend through the bottom surface, and a flange that extends circumferentially about an outer edge of the top surface. The substantially cylindrical polymeric middle body includes a substantially cylindrical polymeric bullet-end and a substantially cylindrical polymeric coupling end connected by a powder chamber, wherein the substantially cylindrical polymeric coupling end extends over the substantially cylindrical coupling element and covers a circumferential surface of the primer flash hole.
대표청구항▼
1. A method of making a metal primer insert for a polymeric ammunition cartridge comprising the steps of: providing an insert blank;machining the insert blank to form a top surface opposite a bottom surface;machining a flange that extends circumferentially about an outer edge of the top surface;mach
1. A method of making a metal primer insert for a polymeric ammunition cartridge comprising the steps of: providing an insert blank;machining the insert blank to form a top surface opposite a bottom surface;machining a flange that extends circumferentially about an outer edge of the top surface;machining a substantially cylindrical coupling element that extends from the bottom surface, wherein the substantially cylindrical coupling element is adapted to receive a polymer overmolding;machining a primer recess in the top surface that extends toward the bottom surface;machining a primer flash aperture in the primer recess through the bottom surface; andmachining a groove in the primer recess around the primer flash aperture adapted to receive a polymer overmolding. 2. The method of claim 1, wherein the metal primer insert is a 5.56 mm, 7.62 mm, .223, 308, 338, 3030, 3006, and .50 caliber primer insert. 3. The method of claim 1, wherein the metal primer insert is a 380 caliber, 38 caliber, 9 mm, 10 mm, 20 mm, 25 mm, 30 mm, 40 mm, 45 caliber and the like. 4. The method of claim 1, wherein the insert blank is a metal, an alloy, or a ceramic alloy. 5. The method of claim 1, wherein the insert blank is stainless steel or brass. 6. The method of claim 1, wherein the insert blank is a 102, 174, 201, 202, 300, 302, 303, 304, 308, 309, 316, 316L, 316Ti, 321, 405, 408, 409, 410, 415, 416, 416R, 420, 430, 439, 440, 446 or 601-665 grade stainless steel. 7. The method of claim 1, wherein the insert blank is a Ti6Al4V.
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