# US 10,480,877 B1 · Detachable box magazine with follower retraction member

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 10,480,877 B1
- Document ID: US10480877B1
- Status: Granted
- Kind: B1
- Application number: 15/953,824
- Filed: 2018-04-16
- Granted: 2019-11-19
- Earliest claimed: 2017-04-14
- Applicants: Kent J. Myers
- Inventors: Kent J. Myers
- Web page: https://patentgrep.com/patent/US10480877B1

## CPC

- F41A 9/67: having means for depressing the cartridge follower, or for locking it in a depressed position
- F41A 9/83: Apparatus or tools for reloading magazines with unbelted ammunition, e.g. cartridge clips
- F41A: FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE

## Abstract

A detachable box magazine includes a housing having a base; a follower; a biasing element biasing the follower away from the base; a spool member; a retraction member operatively connected to the follower and to the spool member; a winding member selectively engaged with the spool member, and, when engaged with the spool member, manipulated to rotate the spool member in a winding direction to wind the retraction member about the spool member and pull the follower toward the base against the biasing element.

## Claims

### Claim 1

A detachable box magazine comprising:
a housing having a base;
a follower;
a biasing element biasing said follower away from said base;
a spool member;
a retraction member operatively connected to said follower and to said spool member;
a winding member selectively engaged with said spool member, and, when engaged with said spool member, manipulated to rotate said spool member in a winding direction to wind said retraction member about said spool member and pull the follower toward said base against said biasing element.

### Claim 2 (depends on 1)

The detachable box magazine of claim 1, wherein said winding member is a hand-driven winding member.

### Claim 3 (depends on 1)

The detachable box magazine as in claim 1, wherein, when said winding member is engaged with said spool member, said spool member is prevented from rotating in an unwinding direction that would permit said retraction member to unwind from said spool member under the bias of the biasing element.

### Claim 4 (depends on 3)

The detachable box magazine as in claim 3, wherein disengaging said winding member from engagement with said spool member permits said spool member to rotate in said unwinding direction under the bias of said biasing element to permit said retraction member to unwind from said spool member.