Reusable grenade
US8485101B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jun 8, 2011 |
| Grant date | Jul 16, 2013 |
| Priority date | — |
| Expiry date | Jun 8, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42B12/40
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A reusable, pneumatic paint grenade that includes a dashpot timing mechanism for sudden release of compressed air that ruptures a frangible housing to disperse a dyed liquid or airsoft pellets after the paint grenade is thrown. The dashpot further comprises a plunger located in a cylindrical body. A lever in contact with the plunger of the dashpot forces the plunger downward to puncture a cartridge of compressed air with a sharp structure disposed between the plunger and the cartridge. The compressed air is prevented from escaping while the sharp structure remains in the cartridge. Once the lever is released, the plunger is forced into substantially its original position by a biasing mechanism and the force exerted by the air pressure within the cartridge. The cylindrical body can be filled with a viscous liquid to further slow movement of the plunger.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.