IP Library Granted Patent US 10,030,929
Granted Patent B1
US 10,030,929 · App. 15/447,304 · Granted Jul 24, 2018

Integral eccentric firearm silencer

Inventor: Ethan Lessard (East Kingston, NH)
Assignee: Sig Sauer, Inc.
F41A21/30F41C3/00
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Quick Facts
Patent No.
US 10,030,929
App. No.
15/447,304
Granted
Jul 24, 2018
Kind
B1
Abstract

An eccentric firearm silencer includes an elongate body having a projectile entry end, a projectile exit end opposite the projectile entry end, a bore extending through the projectile entry end and the projectile exit end for conducting a projectile therethrough, and a longitudinal axis X passing through the bore. The elongate body is configured to be coupled, rotatably about or slidably parallel to the longitudinal axis X, to a barrel of the firearm at or near the projectile entry end. The elongate body includes a propellant gas expansion chamber disposed adjacent to, and in fluid communication with, the bore for receiving a propellant gas. The elongate body includes a capsule container mounted eccentrically adjacent to, and in fluid communication with, the propellant gas expansion chamber. The capsule container is configured to receive therein a capsule or ablative cartridge containing an amorphous solid or a liquid.

Claims (26)

1. An eccentric silencer for a firearm comprising:

an elongate body having a projectile entry end, a projectile exit end opposite the projectile entry end, a bore extending through the projectile entry end and the projectile exit end for conducting a projectile therethrough, and a longitudinal axis passing through the bore, the body being configured to be coupled to a barrel of the firearm at the projectile entry end;

the elongate body further having a propellant gas expansion chamber disposed adjacent to, and in fluid communication with, the bore for receiving a propellant gas;

the elongate body further having a capsule container mounted eccentrically adjacent to, and in fluid communication with, the propellant gas expansion chamber; and

a capsule installed in the capsule container, the capsule being sealed and containing at least one of an amorphous solid and a liquid.

2. The eccentric silencer of claim 1 , wherein the propellant gas expansion chamber is configured to receive at least one of the amorphous solid and the liquid from the capsule via the capsule container.

3. The eccentric silencer of claim 1 , wherein the sealed capsule is configured to rupture in response to an application of a pressure wave traveling ahead of the projectile while the capsule is installed in the capsule container, thereby causing least a portion of the contents to be released from the ruptured capsule and into the propellant gas expansion chamber, wherein the released amorphous solid or the released liquid reduces a temperature of the propellant gas associated with the pressure wave, which in turn reduces a pressure of the propellant gas thereby suppressing a noise level associated with the propellant gas as the propellant gas expands into the propellant gas expansion chamber.

4. The eccentric silencer of claim 1 , wherein the capsule is an ablative cartridge that is removable from the capsule container.

5. The eccentric silencer of claim 1 , wherein the capsule contains at least one of water, antifreeze and a wire pulling polymer lubricant gel.

6. The eccentric silencer of claim 1 , wherein the elongate body is configured to be rotatably coupled to the barrel of the firearm about the longitudinal axis.

7. The eccentric silencer of claim 1 , wherein the elongate body is configured to be slidably coupled parallel to the barrel of the firearm.

8. The eccentric silencer of claim 1 , wherein the capsule contains a polymer lubricant gel.

9. The eccentric silencer of claim 1 , further comprising a dustcover, wherein the elongate body is rotationally aligned with the dustcover.

10. A kit comprising:

an eccentric silencer comprising an elongate body having a projectile entry end, a projectile exit end opposite the projectile entry end, a bore extending through the projectile entry end and the projectile exit end for conducting a projectile therethrough, and a longitudinal axis passing through the bore, the body being configured to be coupled to a barrel of a firearm at the projectile entry end, the elongate body further having a propellant gas expansion chamber disposed adjacent to, and in fluid communication with, the bore for receiving a propellant gas, and the elongate body further having a capsule container mounted eccentrically adjacent to, and in fluid communication with, the propellant gas expansion chamber; and

a capsule configured to be installed in the capsule container, the capsule being sealed and containing one of an amorphous solid and a liquid.

11. The kit of claim 10 , wherein the propellant gas expansion chamber is configured to receive the at least one of the amorphous solid and the liquid from the capsule via the capsule container.

12. The kit of claim 10 , wherein the capsule container is configured to receive therein the capsule.

13. The kit of claim 12 , wherein the capsule is an ablative cartridge that is removable from the capsule container.

14. The kit of claim 10 , wherein the sealed capsule is configured to rupture in response to an application of a pressure wave traveling ahead of the projectile while the capsule is installed in the capsule container, thereby causing least a portion of the contents to be released from the ruptured capsule and into the propellant gas expansion chamber, wherein the released amorphous solid or the released liquid reduces a temperature of the propellant gas associated with the pressure wave, which in turn reduces a pressure of the propellant gas thereby suppressing a noise level associated with the propellant gas as the propellant gas expands into the propellant gas expansion chamber.

15. The kit of claim 10 , wherein the at least one of the amorphous solid and the liquid includes at least one of water, antifreeze and a wire pulling polymer lubricant gel.

16. The kit of claim 10 , wherein the elongate body is configured to be rotatably coupled to the barrel of the firearm about the longitudinal axis.

17. The kit of claim 10 , wherein the elongate body is configured to be slidably coupled parallel to the barrel of the firearm.

18. The kit of claim 10 , further comprising the firearm.

19. The kit of claim 18 , wherein the firearm is a pistol.

20. The kit of claim 10 , further comprising a dustcover, wherein the elongate body is configured to be rotationally aligned with the dustcover.

Assignments (3)
SECURITY INTEREST Recorded Nov 10, 2021
From: SIG SAUER INC.
To: TD BANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 058097/0345 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 30, 2018
From: LESSARD, ETHAN
To: SIG SAUER, INC.
Reel/Frame 046038/0070 →
SECURITY INTEREST Recorded Jun 30, 2017
From: SIG SAUER INC.
To: TD BANK, N.A.
Reel/Frame 042873/0317 →
Continuity (1)
Provisional Application 62302506 · Mar 2, 2016
Cited By (2)
US 1,059,531 US 12,474,136