Shotgun shell wad/shot cup retarding device
US5452535A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1993 |
| Grant date | Sep 26, 1995 |
| Priority date | — |
| Expiry date | Jun 4, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF41A21/46
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A shot cup retardation device including circumferentially spaced and radially protruding ridges, pins, studs, or set screws; or an applied grit around an inner circumference of a barrel; or a plurality of continuous circumferential ribs arranged axially spaced apart within the barrel, all for retarding the velocity of a shot cup so as to inhibit interference between shot and cup downstream of the shotgun muzzle. Additionally, the invention provides that a shot cup retardation device and a downstream choke or pattern conditioner can be utilized in combination to produce a fine tuned and selective pattern without the random influence of shot cup and shot interference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.