FR2103934A5 - Shotgun cartridge piston - comprising a dilatant (cellulose acetate) plug to prevent gas by passing the shot - Google Patents
Shotgun cartridge piston - comprising a dilatant (cellulose acetate) plug to prevent gas by passing the shotInfo
- Publication number
- FR2103934A5 FR2103934A5 FR7128502A FR7128502A FR2103934A5 FR 2103934 A5 FR2103934 A5 FR 2103934A5 FR 7128502 A FR7128502 A FR 7128502A FR 7128502 A FR7128502 A FR 7128502A FR 2103934 A5 FR2103934 A5 FR 2103934A5
- Authority
- FR
- France
- Prior art keywords
- piston
- shot
- passing
- cellulose acetate
- dilatant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B7/00—Shotgun ammunition
- F42B7/02—Cartridges, i.e. cases with propellant charge and missile
- F42B7/08—Wads, i.e. projectile or shot carrying devices, therefor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Abstract
Piston lies between the propellant and the pellets in a shotgun cartridge. The piston comprises a cylindrical body with undulating walls and recessed end faces covered with stiff card. Axial compression/radial expansion of the piston when the propellant is detonated prevents gas by-passing the shot. Sub claims cover piston bodies made of felt or moulded in cellulose acetate and waxed. Process improves propellant efficiency to obtain higher muzzle velocity.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7128502A FR2103934A5 (en) | 1971-07-27 | 1971-07-27 | Shotgun cartridge piston - comprising a dilatant (cellulose acetate) plug to prevent gas by passing the shot |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7128502A FR2103934A5 (en) | 1971-07-27 | 1971-07-27 | Shotgun cartridge piston - comprising a dilatant (cellulose acetate) plug to prevent gas by passing the shot |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2103934A5 true FR2103934A5 (en) | 1972-04-14 |
Family
ID=9081414
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7128502A Expired FR2103934A5 (en) | 1971-07-27 | 1971-07-27 | Shotgun cartridge piston - comprising a dilatant (cellulose acetate) plug to prevent gas by passing the shot |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2103934A5 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2535839A1 (en) * | 1982-11-08 | 1984-05-11 | Brenneke Wilhelm Kg | BULLET CARTRIDGE FOR RIFLE |
EP0196262A2 (en) * | 1985-03-25 | 1986-10-01 | Marcel Piegay | Wad for shotgun or rifle cartridges, and cartridge having such a wad |
FR2587103A2 (en) * | 1985-09-11 | 1987-03-13 | Piegay Marcel | Plug (wad) for cartridges of sporting guns or other firearms |
-
1971
- 1971-07-27 FR FR7128502A patent/FR2103934A5/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2535839A1 (en) * | 1982-11-08 | 1984-05-11 | Brenneke Wilhelm Kg | BULLET CARTRIDGE FOR RIFLE |
EP0196262A2 (en) * | 1985-03-25 | 1986-10-01 | Marcel Piegay | Wad for shotgun or rifle cartridges, and cartridge having such a wad |
EP0196262A3 (en) * | 1985-03-25 | 1989-04-26 | Marcel Piegay | Wad for shotgun or rifle cartridges, and cartridge having such a wad |
FR2587103A2 (en) * | 1985-09-11 | 1987-03-13 | Piegay Marcel | Plug (wad) for cartridges of sporting guns or other firearms |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |