Drum magazine assembly and methods
AssigneeMagpul Industries Corp.
InventorsTimothy Eric Roberts, Michael T. Mayberry, Brian L. Nakayama, Richard M. Fitzpatrick, Eric Nakayama, William Bradley Bennett
Life of this patent
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Abstract
A magazine assembly for a firearm and a related method are disclosed. The assembly has a magazine housing defining a track, and a follower assembly. The magazine housing is configured to constrain a cartridge as the cartridge is moved within the magazine assembly such that majority of a proximal surface area of the cartridge does not contact the magazine housing, and a distal tip of the cartridge does not contact the magazine housing.
Claims19
A drum magazine assembly for a firearm, the drum magazine assembly comprising:
- a drum assembly comprising a wheel having a first pivot axis;
- a spindle assembly;
- a feed tower assembly;
- and
- an advancing mechanism to advance the wheel such that one or more cartridges of ammunition may be loaded after advancing the wheel, the advancing mechanism comprising an arm, a pawl, and a lever;
- the pawl is configured to pivot about a second pivot axis between a free position and an engaged position, the second pivot axis defined by a distal section of the arm and is parallel to the first pivot axis;
- the pawl is further configured to selectively engage the wheel when the pawl is in the engaged position.
A firearm drum magazine comprising:
- a drum comprising a wheel having a first pivot axis;
- a feed tower;
- and
- an arm, a pawl, and a lever, wherein,
- the arm, the pawl, and the lever are interconnected and configured to advance the wheel when the lever is rotated around the first pivot axis, and
- the lever is configured to pivot the pawl about a second pivot axis between a free and an advance position.
Dependencies are inferred from the claim text.