# US 2018/0023911 A1 · Locking box magazine safety device

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- Number: US 2018/0023911 A1
- Document ID: US20180023911A1
- Status: Published application
- Kind: A1
- Application number: 15/216,673
- Filed: 2016-07-21
- Published: 2018-01-25
- Earliest claimed: 2016-07-21
- Inventors: James Harris
- Web page: https://patentgrep.com/patent/US20180023911A1

## CPC

- F41A 17/44: Safety plugs, e.g. for plugging-up cartridge chambers {, barrels, magazine spaces}
- F41A 9/65: Box magazines having a cartridge follower
- F41A: FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE

## Abstract

A locking box magazine safety device, comprising a magazine body comprising a rigid material shaped to conform to the internal dimensions and features of a box magazine well in a magazine-operated device; a lock cylinder comprising a key-operated lock and an operating rod, the operating rod configured to move when the appropriate key is used in the key-operated lock; and a pivoting arm configured to pivot about an axis, configured to be fixed in place by the movement of the operating rod, and configured to obscure the action of a magazine-operated device when fixed in place.

## Claims

### Claim 1

A locking box magazine safety device, comprising:
a magazine body comprising a rigid material shaped to conform to the internal dimensions and features of a box magazine well in a magazine-operated device;
a lock cylinder comprising a key-operated lock and an operating rod, the operating rod configured to move when an appropriate key is used in the key-operated lock; and
a pivoting arm configured to pivot about an axis, configured to be fixed in place by the movement of the operating rod, and configured to fill at least a portion of a chamber of a magazine-operated device when fixed in place.

### Claim 2 (depends on 1)

The device of claim 1, wherein the magazine-operated device is a firearm.

### Claim 3 (depends on 1)

The device of claim 1, wherein the magazine-operated device is a magazine-operated power tool.

### Claim 4 (depends on 2)

The device of claim 2, wherein the pivoting arm further comprises a shaped chamber plug comprising a rigid material configured to conform to the internal dimensions and features of the firearm's barrel.

### Claim 5 (depends on 4)

The device of claim 4, wherein the shaped chamber plug is configured having a tapered shape to allow use with a plurality of firearm chambers of varying internal dimensions or features.