IP Library Granted Patent US 7,520,081
Granted Patent B2
US 7,520,081 · App. 11/182,051 · Granted Apr 21, 2009

Electric immobilization weapon

Assignee: TASER International, Inc.
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Quick Facts
Patent No.
US 7,520,081
App. No.
11/182,051
Granted
Apr 21, 2009
Kind
B2
Abstract

An improved electric weapon immobilizes a target by conducting a current through an electrode and through the target. The weapon includes a circuit that outputs a pulse pattern having a first pulse, a second pulse of opposite polarity compared to the first pulse, and a period of no output between the first pulse and the second pulse. The period is in a range from 50 microseconds to 1000 microseconds. The electric weapon repeats the output of the pattern at a rate of 19 repetitions per second. A method for immobilizing a target is performed by an electric weapon. The method includes delivering a first pulse in a first polarity, operating a switch to reverse the polarity of delivery; and delivery the second pulse in a second polarity. The method may further include awaiting lapse of a period between delivery of the first pulse and delivery of the second pulse wherein the period is in the range of from 50 microseconds to 1000 microseconds.

Claims (6)

1. A method performed by an electric weapon, the method comprising: launching at least one electrically conductive dart; providing a series of pulses via the at least one dart for conduction through a target to cause contractions of the skeletal muscles of the target wherein: the series consists essentially of a plurality of pairs of pulses; each pair consists essentially of two pulses of different polarity, having substantially the same magnitude of charge, and separated from each other by from 50 to 1000 microseconds; and the pairs of the plurality are sequentially separated from each other by from 25 to 200 milliseconds.

2. The method of claim 1 wherein the pulses have substantially the same pulse width.

3. The method of claim 2 further comprising operating a switch to reverse the polarity of each second pulse of each pair.

4. The method of claim 1 further comprising operating a switch to reverse the polarity of each second pulse of each pair.

5. The method of claim 1 wherein each two pulses are separated by less than 500 microseconds.

6. The method of claim 1 wherein each two pulses are separated by about 100 microseconds.

Assignments (2)
CHANGE OF NAME Recorded Jul 11, 2020
From: TASER INTERNATIONAL, INC.
To: AXON ENTERPRISE, INC.
Reel/Frame 053186/0567 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 9, 2007
From: KROLL, MARK W.
To: TASER INTERNATIONAL, INC.
Reel/Frame 019270/0809 →
Continuity (4)
Provisional Application 6058714200 · Jul 13, 2004
Provisional Application 6058714100 · Jul 13, 2004
Provisional Application 6058714000 · Jul 13, 2004
Related Publication 20070019358A1 · Jan 25, 2007