# US 2014/0196340 A1 · Detachable firearm magazine springs formed from wire having non-round cross section

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- Number: US 2014/0196340 A1
- Document ID: US20140196340A1
- Status: Published application
- Kind: A1
- Application number: 14/108,374
- Filed: 2013-12-17
- Published: 2014-07-17
- Earliest claimed: 2013-01-11
- Inventors: Alan K. Dugger
- Web page: https://patentgrep.com/patent/US20140196340A1

## CPC

- 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

Springs formed from non-round wire stock for a detachable magazine for a firearm are disclosed. A detachable magazine may have a body having a base, an ammunition follower positioned within the body, and a spring formed from wire having a non-round cross-section positioned between the body and the follower. The non-round wire provides a shorter compression height for the spring when compared to traditional round wire springs currently used in detachable firearm magazines.

## Claims

### Claim 1

A detachable magazine for a firearm, comprising
a body having a base;
an ammunition follower positioned within body; and
a spring formed from wire having a non-round cross-section positioned within the body between the base and the follower.

### Claim 2 (depends on 1)

The detachable magazine for a firearm of claim 1, wherein the detachable magazine is designed to hold pistol cartridges.

### Claim 3 (depends on 1)

The detachable magazine for a firearm of claim 1, wherein the detachable magazine is designed to hold rifle cartridges.

### Claim 4 (depends on 1)

The detachable magazine for a firearm of claim 1, further comprising a second spring formed from wire having a non-round cross-section positioned within the body between the base and the follower.

### Claim 5 (depends on 1)

The detachable magazine for a firearm of claim 1, wherein the non-round cross-section is generally rectangular such that the wire has a height and a width.

### Claim 6 (depends on 5)

The detachable magazine for a firearm of claim 5, wherein the spring maintains the width generally perpendicular to the axis of compression of the spring.

### Claim 7 (depends on 5)

The detachable magazine for a firearm of claim 5, wherein the ratio between the width a and the height b is between about 1 and about 10.

### Claim 8 (depends on 7)

The detachable magazine for a firearm of claim 7, wherein the ratio between the width a and the height b is between about 2 and about 3.

### Claim 9 (depends on 1)

The detachable magazine for a firearm of claim 1, wherein the spring has a rounded rectangle coil shape.

### Claim 10 (depends on 1)

The detachable magazine for a firearm of claim 1, wherein the spring has a round coil shape.

### Claim 11 (depends on 1)

The detachable magazine for a firearm of claim 1, wherein the spring has an elliptical coil shape.