# US 10,866,059 B2 · Composite grip module for a handgun

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- Number: US 10,866,059 B2
- Document ID: US10866059B2
- Status: Granted
- Kind: B2
- Application number: 16/509,960
- Filed: 2019-07-12
- Published: 2020-02-13
- Granted: 2020-12-15
- Earliest claimed: 2018-08-07
- Assignees: Sig Sauer, Inc.
- Applicants: Sig Sauer, Inc.
- Inventors: Zachary Stephen Haase; Phillip Harold Strader, Jr.
- Web page: https://patentgrep.com/patent/US10866059B2

## CPC

- F41C 23/10: Stocks or grips for pistols, e.g. revolvers (F41C23/12 takes precedence)
- F41C: SMALLARMS, e.g. PISTOLS, RIFLES (functional features or details common to both smallarms and ordnance, mountings therefor F41A; projecting missiles without use of explosive or combustible propellant charge F41B); ACCESSORIES THEREFOR

## Abstract

A composite grip or grip module for a handgun is made from a polymer composite that includes a polymer and dense particles that increase the density of the grip. For example, the particles can be tungsten, tantalum, lead, iron, or mixtures thereof to provide a polymer density of greater than 2.5 grams per cubic centimeter.

## Claims

### Claim 1

A grip module for a handgun, the grip module comprising:
a handgrip portion extending downwardly; and
a receiver portion extending forward from the handgrip portion;
wherein the handgrip portion and the receiver portion are made of a polymer composite having metal particles dispersed throughout an entire volume of the polymer, the grip module having a density greater than 2.5 grams per cubic centimeter.

### Claim 2 (depends on 1)

The grip module of claim 1, wherein a center of mass of the grip module is located within the handgrip portion.

### Claim 3 (depends on 1)

The module of claim 1 further comprising metal particles embedded into a surface of the grip module.

### Claim 4 (depends on 1)

The grip module of claim 1, wherein the metal particles comprise one or more of tungsten, tantalum, lead, and iron.

### Claim 5 (depends on 4)

The grip module of claim 4, wherein the polymer comprises polyamide.

### Claim 6 (depends on 5)

The grip module of claim 5 wherein the polymer composite comprises at least 20% tungsten by weight.

### Claim 7 (depends on 1)

The grip module of claim 1, wherein the metal particles are homogeneously dispersed throughout the entire volume of the polymer.

### Claim 8 (depends on 1)

The grip module of claim 1, wherein the metal particles have a density of at least 7 g/cm3.

### Claim 9 (depends on 8)

The grip module of claim 8, wherein the polymer composite comprises at least 50% polymer by volume.

### Claim 10 (depends on 8)

The grip module of claim 8, wherein the polymer composite comprises at least 80% polymer by volume.

### Claim 11 (depends on 8)

The grip module of claim 8, wherein the polymer composite comprises less than 50% metal particles by volume.

### Claim 12 (depends on 8)

The grip module of claim 8, wherein the metal particles are non-uniformly distributed throughout the grip module.

### Claim 13 (depends on 12)

The grip module of claim 12, wherein the metal particles have a greater concentration in a backstrap portion of the grip module compared to neighboring portions of the grip module.

### Claim 14 (depends on 12)

The grip module of claim 12, wherein the metal particles have a greater concentration in a distal portion of the receiver portion of the grip module compared to neighboring portions of the grip module.

### Claim 15 (depends on 12)

The grip module of claim 12, wherein the metal particles have a greater concentration in a lower part of the handgrip portion of the grip module compared to neighboring portions of the grip module.

### Claim 16 (depends on 8)

The grip module of claim 8, wherein the metal particles comprise one or more of tungsten, tantalum, lead, and iron.

### Claim 17 (depends on 8)

The grip module of claim 8, wherein the grip module has a density of at least 3 grams per cubic centimeter.

### Claim 18 (depends on 8)

The grip module of claim 8, wherein the grip module has a density of at least 3.5 grams per cubic centimeter.

### Claim 19 (depends on 1)

A handgun, comprising the grip module of claim 1.

### Claim 20 (depends on 19)

The handgun of claim 19, wherein a center of mass of the handgun is located within the grip module.

### Claim 21 (depends on 1)

The grip module of claim 1, wherein the metal particles have an average diameter less than 1 mm.

### Claim 22 (depends on 19)

The handgun of claim 19, wherein the polymer composite comprises greater than 1% tungsten or tantalum by volume.

### Claim 23

A grip module for a handgun, the grip module made of a polymer having metal particles dispersed throughout an entire volume of the polymer, wherein the grip module has a density greater than 2.5 grams per cubic centimeter.

### Claim 24 (depends on 23)

The grip module of claim 23, wherein the metal particles comprise tungsten.