IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0085715
(2006-12-08)
|
등록번호 |
US-7836828
(2011-01-22)
|
우선권정보 |
FI-20055655(2005-12-09) |
국제출원번호 |
PCT/FI2006/050546
(2006-12-08)
|
§371/§102 date |
20080528
(20080528)
|
국제공개번호 |
WO07/065977
(2007-06-14)
|
발명자
/ 주소 |
- Martikainen, Kimmo
- Lehtonen, Jaakko
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
5 |
초록
▼
The invention relates to a shotgun cartridge for shotgun shooting. The shotgun cartridge includes a case and a case head in it, in the vicinity of a primer arranged in which, a propelling charge is arranged. Inside the case is a shot wad with shot pellets arranged inside it, which are arranged on th
The invention relates to a shotgun cartridge for shotgun shooting. The shotgun cartridge includes a case and a case head in it, in the vicinity of a primer arranged in which, a propelling charge is arranged. Inside the case is a shot wad with shot pellets arranged inside it, which are arranged on the opposite side of the propelling charge to the primer, and between the propelling charge and the shot pellets is a gas wad. In addition, the shotgun cartridge includes a indicator piece, arranged inside the shot wad, on the shot pellets side of the gas wad, in which there is a space for a indicator agent. The indicator piece is arranged to be ejected from the case when the shotgun cartridge is fired by igniting the propelling charge with the primer. The outer diameter of the indicator piece essentially corresponds to the inner diameter of the shot wad, and the indicator piece is arranged against the end wall of the shot wad with the shot pellets lying freely against the indicator piece. In addition, the indicator agent is a fine-particle incombustible substance, which is arranged loosely in the space.
대표청구항
▼
The invention claimed is: 1. Shotgun cartridge for shotgun shooting, said shotgun cartridge comprising: a case and a case head at one end of said case, a primer arranged in the case head and a propelling charge in the vicinity of said primer, a shot wad inside the case and shot pellets arranged ins
The invention claimed is: 1. Shotgun cartridge for shotgun shooting, said shotgun cartridge comprising: a case and a case head at one end of said case, a primer arranged in the case head and a propelling charge in the vicinity of said primer, a shot wad inside the case and shot pellets arranged inside said shot wad, which is arranged on the opposite side of the propelling charge to the primer, a gas wad between the propelling charge and the shot pellets, and an indicator piece having a space containing an indicator agent, said indicator piece being arranged inside the shot wad, on the shot pellet side of the gas wad, and said indicator piece being ejectable from the case when the shotgun cartridge is fired by igniting the propelling charge with the primer, characterized in that the indicator piece has an outer diameter essentially corresponding to an inner diameter of the shot wad, the shot wad has an end wall against which the indicator piece is arranged with the shot pellets lying freely against the indicator piece, and the indicator agent is a fine-particle incombustible substance, which is arranged loosely in the space. 2. Shotgun cartridge according to claim 1, characterized in that the shot wad is arranged to be part of the gas wad and there is a cushioning part between the shot wad and the gas wad. 3. Shotgun cartridge according to claim 2, characterized in that the indicator agent is partly or entirely a coloured substance. 4. Shotgun cartridge according to claim 3, characterized in that the indicator piece is formed from an end piece and a body piece that is a continuation of said end piece, the space being arranged in said body piece. 5. Shotgun cartridge according to claim 4, characterized in that the end piece has a face surface which is shaped in such a way that air resistance creates a rotational motion in the indicator piece, which releases the indicator agent. 6. Shotgun cartridge according to claim 5, characterized in that the indicator piece has a central axis, and there are at least two bevels in the face surface, which are arranged symmetrically relative to said central axis. 7. Shotgun cartridge according to claim 6, characterized in that the specific weight of the indicator piece is 0.5-5.0 g/m3. 8. Method of shotgun shooting a target sent into a flight path, said method comprising the steps of: using a shotgun cartridge in a shotgun, said shotgun cartridge including a shot wad, shot pellets and an indicator piece containing an indicator agent, said shot pellets and said indicator piece being fitted inside the shot wad, which is arranged to exit from the shotgun cartridge when the shotgun is fired, in order to determine possible errors in shotgun shooting, wherein said indicator piece has an outer diameter essentially corresponding to an inner diameter of the shot wad, the shot wad has an end wall against which the indicator piece is fitted, and the shot pellets lie freely against the indicator piece; using a fine-particle incombustible substance as the indicator agent, which is arranged loosely in the indicator piece, in order to form a momentarily observable indicator-agent cloud at the moment of firing. 9. Method according to claim 8, characterized in that a possible error and its magnitude are determined from the distance between the indicator-agent cloud and the target at the moment of firing. 10. Method according to claim 9, characterized in that the shotgun cartridge is arranged in such a way that the indicator agent discharges from the indicator piece between the shotgun and the intersection point of the flight paths of the shot pellets and the target. 11. Method according to any of claim 10, characterized in that the indicator piece is arranged in such a way that the indicator agent discharges from the indicator piece within 2-10 milliseconds. 12. Shotgun cartridge according to claim 6, characterized in that the specific weight of the indicator piece is 2.0-4.0 g/m3. 13. Method according to any of claim 10, characterized in that the indicator piece is arranged in such a way that the indicator agent discharges from the indicator piece within 4-8 milliseconds.
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