Patent ID: 7942091
Filing Date: 2011-05-17
Classification: F41A

Abstract:
1. A shotgun drum magazine for supplying shotgun shells to a shotgun, said shotgun drum magazine comprising: an open frame housing having a generally flat front plate and a generally flat rear plate connected and separated by spacers, bolts in said spacers and openings between the spacers, the flat front plate including a first annular groove providing a track for shotgun shell rims and said track terminates at an end ramp and the flat rear plate including a second annular groove aligned with the first annular groove, said second annular groove receiving a shotgun shell end opposite said rim, wherein said first and second annular grooves forming an annular path along which shotgun shells travel, a rotatably mounted cog wheel having output grooves sized to engage shotgun shells for carrying shotgun shells along the annular path, and a coil spring for rotating the rotatably mounted cog wheel such that shotgun shells can be manually loaded into the magazine against a force generated against said spring and automatically dispensed by said spring, a follower arm having a first end pivotably mounted on said rotatably mounted cog wheel, said follower arm having a second end carrying a body that is carried in one of said first and second annular grooves, wherein said body includes a bearing that defines a cut-away for communication with said rotatable mounted cog wheel.