Controlled-unaided surge and purge suppressors for firearm muzzles
US8522662B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 2010 |
| Grant date | Sep 3, 2013 |
| Priority date | — |
| Expiry date | Jul 23, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF41A21/34
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A Controlled Unaided Surge and Purge Suppressor for firearms uses the blast and plume characteristics inherent to the ballistic discharge process to develop a new two-step controlled surge and purge system centered around advanced mixer-ejector concepts. The blast surge noise is reduced by controlling the flow expansion, and the flash effects are reduced by controlling inflow and outflow gas purges. This is a C-I-P application. In the preferred C-I-P embodiment, the blast surge is mitigated via a slotted mixer nozzle; a first expansion chamber; a generally “wagon-wheel” shaped blast baffle with a vent hole; a series of alternating baffles, with vent holes, strategically located along the suppressor's inner wall surface; a second expansion chamber; and an exit opening. This preferred C-I-P embodiment contains no “outside” vent holes (i.e., throughbores) which extend through the suppressor's outer or longitudinal wall. Instead of ingesting ambient air through such throughbores and mixing that air with the muzzle gases, as shown in the parent application, the preferred C-I-P embodiment ingests and mixes chamber gases and contaminants with the muzzle gases while allowing fluid flow thr…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.