IP Library Granted Patent US 10,352,639
Granted Patent B2
US 10,352,639 · App. 16/005,929 · Granted Jul 16, 2019

Safety magazine system for blank ammunition

Inventors: Joseph W. Doty (El Cajon, CA); David J. Bloom (Santee, CA)
F41A17/34
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Quick Facts
Patent No.
US 10,352,639
App. No.
16/005,929
Granted
Jul 16, 2019
Kind
B2
Abstract

In one aspect, a magazine safety system for preventing loading of a live ammunition cartridge into a firing chamber of a firearm is provided. The firearm has an associated ammunition caliber. The safety system includes a safety block comprising an inner member configured for insertion along an inner surface of a wall of a magazine well of the firearm, the magazine well having an opening for receiving a magazine. An outer member is configured to attach to the inner member along an outer surface of the wall of the magazine well and one or more fasteners secure the inner member to the outer member to secure the wall of the magazine well between the inner member and the outer member. The inner member has a thickness configured reduce an axial extent of the opening to permit insertion of a first magazine sized to carry blank ammunition rounds having a length which is less than live ammunition cartridges having the associated ammunition caliber, while preventing insertion of a second magazine sized to carry live ammunition cartridges having the associated ammunition caliber.

Claims (22)

1. A magazine safety system for a firearm having a magazine well, the magazine well having a forward wall and an open end configured to insertably receive a live ammunition magazine sized to carry live ammunition cartridges having an associated caliber, the magazine safety system comprising:

a safety block configured to be removably coupled to the forward wall of the magazine well, the safety block comprising an inner block member and an outer block member;

said inner block member having a first surface configured to engage an inner surface of the forward wall of the magazine well;

said outer block member attached to the inner block member, the outer block member having a second surface opposing the first surface, the second surface configured to engage an outer surface of the forward wall of the magazine well;

one or more fasteners securing the inner block member to the outer block member, the inner block member and outer block member configured to be moved relative to one another in response to manipulation of said one or more fasteners to capture the forward wall of the magazine well between the inner block member and the outer block member in clamping fashion;

the inner block member having a thickness configured to reduce an axial extent of the open end by an amount sufficient to permit insertion of a blank ammunition magazine sized to carry blank ammunition cartridges having the associated caliber, the blank ammunition cartridges having a length which is less than the live ammunition cartridges having the associated caliber, the thickness further configured to prevent insertion of the live ammunition magazine.

2. The magazine safety system of claim 1 , further comprising the blank ammunition magazine.

3. The magazine safety system of claim 2 , wherein the blank ammunition magazine is a box-type magazine.

4. The magazine safety system of claim 2 , wherein the blank ammunition magazine has a stepped shape defining a first portion sized to fit within the magazine well when the safety block is secured to the forward wall of the magazine well and a second portion wider than the first portion which is exterior to the magazine well when the safety block is secured to the forward wall of the magazine well.

5. The magazine safety system of claim 1 , wherein the inner block member includes a shoulder portion which is exterior of the magazine well and extends toward the outer block member when the safety block is secured to the forward wall of the magazine well.

6. The magazine safety system of claim 5 , wherein the outer block member includes a transversely extending groove configured to accommodate a rim of the magazine well when the safety block is secured to the forward wall of the magazine well.

7. The magazine safety system of claim 1 , wherein the inner block member and outer block member are formed of a material selected from the group consisting of metals, metal alloys, polymer materials, and composite materials.

8. The magazine safety system of claim 1 , wherein said one or more fasteners comprise one or more threaded fasteners securing the inner block member to the outer block member.

9. The magazine safety system of claim 8 , wherein said one or more threaded fasteners have a specific geometric configuration requiring a complementary tool to attach and remove the safety block from the forward wall of the magazine well.

10. The magazine safety system of claim 1 , wherein one or both of the inner block member and outer block member have a color selected from the group consisting of a bright color, a color which is contrasting with a color of the firearm, and a color which is indicative of safety.

11. The magazine safety system of claim 10 , wherein one or both of the inner block member and outer block member are blue in color.

12. The magazine safety system of claim 1 , wherein one or both of the inner block member and outer block member are formed of a material which is transparent.

13. A method for preventing loading of a live ammunition cartridge into a firing chamber of a firearm, the firearm having an associated caliber, the firearm further having a magazine well, the magazine well having a forward wall and an open end configured to insertably receive a live ammunition magazine sized to carry live ammunition cartridges having the associated caliber, the method comprising:

placing an inner block member along an inner surface of the forward wall of the magazine well of the firearm;

placing an outer block member along an outer surface of the forward wall of the magazine well of the firearm;

attaching the inner block member to the outer block member with one or more fasteners and manipulating the one or more fasteners to clamp the forward wall of the magazine well between the inner block member and the outer block member; and

wherein the inner block member has a thickness configured to reduce an axial extent of the open end by an amount sufficient to permit insertion of a blank ammunition magazine sized to carry blank ammunition cartridges having the associated caliber, the blank ammunition cartridges having a length which is less than the live ammunition cartridges having the associated caliber, the thickness further configured to prevent insertion of the live ammunition magazine.

Continuity (2)
Provisional Application 62521001 · Jun 16, 2017
Related Publication 20180364001A1 · Dec 20, 2018