IP Library Granted Patent US 7,444,940
Granted Patent B2
US 7,444,940 · App. 11/103,711 · Granted Nov 4, 2008

Variable range ammunition cartridge for electrical discharge weapon

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Quick Facts
Patent No.
US 7,444,940
App. No.
11/103,711
Granted
Nov 4, 2008
Kind
B2
Abstract

An ammunition cartridge for an electrical discharge weapon having at least one dart positioned within a dart chamber in the housing. The cartridge has at least one adjustable barrel for selection between close and extended ranges and a joint and port for adjusting pressure in the barrel. In another form the cartridge has two fixed barrels and a retractable deflection ramp for selection between close and extended ranges.

Claims (23)

1. An ammunition cartridge for an electrical discharge weapon comprising:

a housing having a first dart chamber and a second dart chamber located within the housing;

a dart positioned in each of the first dart chamber and second dart chamber;

a propellant for launching each dart; and

means for adjusting pressure in one of the first dart chamber or the second dart chamber.

2. The ammunition cartridge of claim 1 , wherein the means for adjusting pressure includes one of a spring, band or tensioner for biasing the first dart chamber or the second dart chamber.

3. The ammunition cartridge of claim 1 , wherein the means for adjusting pressure includes a sealing joint between one of the first dart chamber or the second dart chamber and the housing.

4. The ammunition cartridge of claim 1 , wherein the means for adjusting pressure includes a switch and plunger for moving one of the first dart chamber or the second dart chamber.

5. The ammunition cartridge of claim 1 , wherein the means for adjusting pressure includes generating turbulence in one of the first dart chamber or the second dart chamber.

6. The ammunition cartridge of claim 1 wherein the means for adjusting pressure includes at least one port for bleeding pressure from one of the first dart chamber or the second barrel.

7. The ammunition cartridge of claim 1 wherein one of the first dart chamber or the second dart chamber has an adjustable geometry.

8. An ammunition cartridge for an electrical discharge weapon comprising:

a housing having an exterior surface and a first barrel and a second barrel located within the housing;

a dart positioned in each of the first barrel and the second barrel;

a propellant for launching each dart from the first barrel and the second barrel;

means for adjusting the geometry of one of the first barrel or the second barrel; and

means for biasing one of the first barrel or the second barrel in the housing.

9. The ammunition cartridge of claim 8 further having means for adjusting pressure in one of the first barrel or the second barrel.

10. The ammunition cartridge of claim 9 wherein the means for adjusting pressure includes a joint between one of the first barrel or the second barrel and the housing.

11. The ammunition cartridge of claim 9 wherein the means for adjusting pressure includes a port for removing pressure from one of the first barrel or the second barrel.

12. The ammunition cartridge of claim 8 wherein the means for adjusting the geometry of one of the first barrel or the second barrel includes a joint between one of the first barrel or the second barrel and the housing.

13. The ammunition cartridge of claim 12 wherein the means for adjusting the geometry includes a mechanism for moving one of the first barrel or the second barrel.

14. The ammunition cartridge of claim 8 wherein the means for biasing one of the first barrel or the second barrel is a spring located in the housing adjacent one of the first barrel or the second barrel.

Assignments (11)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 25, 2026
From: VIEVU, LLC
To: AXON ENTERPRISE, INC.
Reel/Frame 073886/0268 →
RELEASE OF SECURITY INTEREST Recorded Aug 23, 2021
From: BANK OF AMERICA, N.A.
To: SAFARILAND, LLC
Reel/Frame 057264/0910 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 15, 2018
From: SAFARILAND, LLC
To: VIEVU, LLC
Reel/Frame 046099/0802 →
RELEASE OF SECURITY INTEREST RECORDED AT R/F NO. 040660/0873 Recorded May 3, 2018
From: VIRTUS GROUP, LP
To: SAFARILAND, LLC
Reel/Frame 046082/0565 →
PARTIAL RELEASE OF SECURITY INTEREST IN PATENTS Recorded Apr 3, 2017
From: VIRTUS GROUP, LP
To: SAFARILAND, LLC
Reel/Frame 042143/0863 →
RELEASE OF SECURITY INTEREST Recorded Mar 17, 2017
From: BANK OF AMERICA, N.A., AS AGENT
To: SAFARILAND, LLC
Reel/Frame 041602/0781 →
ASSIGNMENT OF INTELLECTUAL PROPERTY SECURITY AGREEMENTS Recorded Nov 21, 2016
From: WILMINGTON TRUST, NATIONAL ASSOCIATION
To: VIRTUS GROUP, LP
Reel/Frame 040660/0873 →
SECURITY AGREEMENT Recorded Aug 1, 2012
From: SAFARILAND, LLC
To: BANK OF AMERICA, N.A., AS AGENT
Reel/Frame 028698/0797 →
SECURITY AGREEMENT Recorded Jul 27, 2012
From: SAFARILAND, LLC
To: WILMINGTON TRUST, NATIONAL ASSOCIATION
Reel/Frame 028652/0221 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 8, 2010
From: DEFENSE TECHNOLOGY CORPORATION OF AMERICA
To: SAFARILAND, LLC
Reel/Frame 023750/0564 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 26, 2006
From: HULTMAN, JOHN A.; KAPELES, JOHN
To: DEFENSE TECHNOLOGY CORPORATION OF AMERICA
Reel/Frame 018441/0731 →