Method of making electro-thermal chemical cartridge
US5515765A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 25, 1995 |
| Grant date | May 14, 1996 |
| Priority date | — |
| Expiry date | May 25, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42B6/006
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An electrothermal chemical cartridge with a fuse of tapering cross section enables higher impulse energy to be imparted to a projectile by means of complete controlled burning of propellant. A long, narrow tube filled with propellant has a fuse on its inside surface with a cross section that tapers toward the discharge end, separated from the electrical ground of the cartridge casing by a layer of insulation sufficiently thin to be destroyed as the fuse ignites the propellant. A high-voltage electrode connected at the back end of the tube provides for application of a pulse of sufficient current density to ohmically heat or burn the fuse in a controlled fashion from the discharge end to the back end. Many such tubes can be bundled together in a large casing for wide barrel guns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.