Waterproof cartridge seal
US7712418B2 · kind B2 · utility
0Cited by
23References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 5, 2008 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Dec 5, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42B7/12
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A closure wad is placed at the mouth of the launching end of a shotgun cartridge before the mouth is crimped down to seal the launching end of the cartridge. Both the walls of the closure cap and the walls at the mouth of the plastic envelope are crimped down together, thereby forming a substantially impermeable seal at the launching end of the cartridge. In addition, the inventive closure cap substantially reduces the detritus which is sometimes expelled when a launcher cartridge is fired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.