Cased ammunition
US5841063A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1996 |
| Grant date | Nov 24, 1998 |
| Priority date | — |
| Expiry date | Nov 29, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42B39/20
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A cartridge case for service ammunition is designed to reduce the damage effect on the environment in the event of an extreme pressure increase in the propellent powder forming part of the charged ammunition, upon accidental ignition of the propellent powder and to a method for reduction of the damage. The cartridge case comprises at least one longitudinal weakening in the case material, the weakening being designed in such a manner that the case material, when the case is supported by the cartridge chamber of the weapon during the combustion of the powder, withstands stresses from the internal gas pressure, but breaks under the same gas pressure if the propellent powder is ignited when the case is located outside the cartridge chamber, thus splitting open along the weakening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.