FIREARM MAGAZINE

US 20100269388A1
Filed: 03/08/2007
Published: 10/28/2010
Est. Priority Date: 03/08/2007
Status: Active Grant

First Claim

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1. A magazine for a firearm comprising:

a cavity sized to receive a plurality of cartridges each of which includes a bullet;

wherein the cavity is shaped to prevent the bullets from moving forward longitudinally and contacting the magazine;

wherein the magazine is a rotary magazine; and

wherein the magazine is configured to be inserted upward into an underside of the firearm.

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Abstract

A magazine for a firearm may include a cavity that is shaped to prevent the tip of the bullets in the cartridges from contacting the magazine when the firearm recoils. The magazine may also be configured so that the cartridges in the magazine exit the cavity at least approximately in the center of the magazine. The magazine may be configured to include a biasing mechanism that pushes the cartridges upward in the cavity. The biasing mechanism may be configured to allow the magazine to be compact, simple, and reliable.

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27 Claims

1. A magazine for a firearm comprising:
- a cavity sized to receive a plurality of cartridges each of which includes a bullet;
  
  wherein the cavity is shaped to prevent the bullets from moving forward longitudinally and contacting the magazine;
  
  wherein the magazine is a rotary magazine; and
  
  wherein the magazine is configured to be inserted upward into an underside of the firearm.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- - 2. The magazine of claim 1 wherein each of the plurality of cartridges includes a case having a shoulder, and wherein the cavity is shaped so that the shoulders of the cases contact the magazine to prevent the bullets from moving forward longitudinally and contacting the magazine.
  - 3. The magazine of claim 1 wherein the magazine is configured so that the plurality of cartridges exit the cavity at least approximately in the center of the magazine.
  - 4. The magazine of claim 1 wherein all of the plurality of cartridges are positioned so that each preceding cartridge is above the next succeeding cartridge when the magazine is fully loaded.
  - 5. The magazine of claim 1 comprising a movable member positioned in the cavity, the movable member being configured to rotate and push the plurality of cartridges upward in the cavity.
  - 6. The magazine of claim 5 wherein the movable member is has a total range of motion that is no more than 180 degrees.
  - 7. The magazine of claim 5 wherein the movable member is configured to rotate backward no more than 90 degrees past a straight down position.
  - 8. The magazine of claim 5 wherein the movable member includes a flat plate that rotates and pushes the plurality of cartridges upward in the cavity.
  - 9. The magazine of claim 1 wherein the magazine is no more than 32 mm wide.
  - 10. The magazine of claim 1 wherein the plurality of cartridges are centerfire cartridges.
  - 11. A firearm including the magazine of claim 1 coupled to the underside of the firearm.

12. A magazine for a firearm comprising:
- a cavity sized to receive a plurality of cartridges; and
  
  retaining edges that prevent the plurality of cartridges from coming out the top of the cavity when the magazine is separate from the firearm;
  
  wherein the magazine is configured so that the plurality of cartridges exit the cavity at least approximately in the center of the magazine; and
  
  wherein the magazine is configured to be inserted upward into an underside of the firearm.
- View Dependent Claims (13, 14, 15, 16, 17, 18)
- - 13. The magazine of claim 12 wherein each of the plurality of cartridges includes a bullet coupled to a case having a shoulder, and wherein the cavity is shaped so that the shoulders of the cases contact the magazine to prevent the bullets from moving forward longitudinally and contacting the magazine.
  - 14. The magazine of claim 12 wherein all of the plurality of cartridges are positioned so that each preceding cartridge is above the next succeeding cartridge when the magazine is fully loaded.
  - 15. The magazine of claim 12 comprising a movable member positioned in the cavity, the movable member being configured to rotate and push the plurality of cartridges upward in the cavity.
  - 16. The magazine of claim 15 wherein the movable member has a total range of motion that is no more than 180 degrees.
  - 17. The magazine of claim 15 wherein the movable member is configured to rotate backward no more than 90 degrees past a straight down position.
  - 18. The magazine of claim 15 wherein the movable member includes a flat plate that rotates and pushes the plurality of cartridges upward in the cavity.

19. A magazine for a firearm comprising:
- a cavity sized to receive a plurality of cartridges; and
  
  a movable member positioned in the cavity, the movable member being configured to rotate and push the plurality of cartridges upward in the cavity;
  
  wherein the movable member has a total range of motion that is no more than 180 degrees.
- View Dependent Claims (20, 21, 22, 23)
- - 20. The magazine of claim 19 wherein each of the plurality of cartridges includes a bullet coupled to a case having a shoulder, and wherein the cavity is shaped so that the shoulders of the cases contact the magazine to prevent the bullets from moving forward longitudinally and contacting the magazine.
  - 21. The magazine of claim 19 wherein all of the plurality of cartridges are positioned so that each preceding cartridge is above the next succeeding cartridge when the magazine is fully loaded.
  - 22. The magazine of claim 19 wherein the movable member is configured to rotate backward no more than 90 degrees past a straight down position.
  - 23. The magazine of claim 19 wherein the movable member includes a flat plate that rotates and pushes the plurality of cartridges upward in the cavity.

24. A magazine for a firearm comprising:
- a cavity sized to receive a plurality of cartridges;
  
  a movable member positioned in the cavity, the movable member being configured to rotate and push the plurality of cartridges upward in the cavity;
  
  wherein all of the plurality of cartridges are positioned so that each preceding cartridge is above the next succeeding cartridge when the magazine is fully loaded.
- View Dependent Claims (25, 26, 27)
- - 25. The magazine of claim 24 wherein each of the plurality of cartridges includes a bullet coupled to a case having a shoulder, and wherein the cavity is shaped so that the shoulders of the cases contact the magazine to prevent the bullets from moving forward longitudinally and contacting the magazine.
  - 26. The magazine of claim 24 wherein the movable member is configured to rotate backward no more than 90 degrees past a straight down position.
  - 27. The magazine of claim 24 wherein the movable member includes a flat plate that rotates and pushes the plurality of cartridges upward in the cavity.

Specification

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Current Assignee
Browing
Original Assignee
Browning Corporation (Prosteel Security Holdings Inc)
Inventors
Heath, Marcus A.

Granted Patent

US 8,156,675 B2
Time in Patent Office

Days
Field of Search
US Class Current

42/49.10
CPC Class Codes

F41A 9/64   for unbelted ammunition

F41A 9/65   Box magazines having a cart...

F41A 9/70   Arrangements thereon for di...

F41A 9/73   Drum magazines

FIREARM MAGAZINE

First Claim

1 Assignment

0 Petitions

Accused Products

Abstract

9 Citations

27 Claims

Specification

Solutions

Use Cases

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FIREARM MAGAZINE

First Claim

1 Assignment

Subscription Required

Subscription Required

0 Petitions

Subscription Required

Accused Products

Subscription Required

Abstract

9 Citations

27 Claims

Specification

Subscription Required

Solutions

Use Cases

Quick Links