Ordnance – Cartridge feeding – Drum magazine
Reexamination Certificate
2005-11-14
2008-10-28
Johnson, Stephen M (Department: 3641)
Ordnance
Cartridge feeding
Drum magazine
C042S019000, C042S001020
Reexamination Certificate
active
07441491
ABSTRACT:
A detachable magazine for storing and delivering ammunition to a firearm having a magazine well. The magazine has a body with a column adapted for insertion into the magazine well. The column has a passage for transmitting ammunition to the firearm. The body includes a drum housing defining a substantially cylindrical chamber communicating with the column passage. A first sprocket element is rotatably received in the chamber and has a serrated periphery, with each serration adapted to receive an ammunition cartridge. A second sprocket element is rotatably received in the chamber, and is concentric with the first sprocket element, having a serrated periphery with each serration adapted to receive an ammunition cartridge. A spring element is connected to at least one of the sprocket elements, and operates to rotatably bias the sprocket elements to transmit cartridges from the drum chamber to the column passage. The magazine may have a pair of drums, and the sprockets may be tapered, to facilitate feeding of tapered cartridges. The magazine may include a counter to indicate the quantity of ammunition consumed or remaining. The magazine may include the ability to power and de-power spring motor.
REFERENCES:
patent: 1332936 (1920-03-01), Veeder
patent: 2161696 (1939-06-01), Blacker
patent: 4384508 (1983-05-01), Sullivan et al.
patent: 4487103 (1984-12-01), Atchisson
patent: 4658700 (1987-04-01), Sullivan
Annatac Industries, Incorporated
Johnson Stephen M
Langlotz Bennet K.
Langlotz Patent Works Inc.
LandOfFree
Drum magazine for firearm does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Drum magazine for firearm, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drum magazine for firearm will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4007088