Christopher D Baldwin

US Patent:

6512450, Jan 28, 2003

Filed:

Jan 20, 2000

Appl. No.:

09/488693

Inventors:

George Alan Burnett - Clayton IN
Christopher Michael Baldwin - Indianapolis IN

Assignee:

Mallory Sonalert, Products, Inc. - Indianapolis IN

International Classification:

G08B 300

US Classification:

3403841, 3403846, 381339, D10120

Abstract:

The invention is an improved piezoelectric noise-making and audible signaling device which produces a distinctive 2 KHz tone that is more pronounced and significantly easier to perceive, especially in a noisy environment. The volume of the audible tone is amplified by using two or three sound-amplifying chambers or cavities.

US Patent:

6617967, Sep 9, 2003

Filed:

Jan 10, 2001

Appl. No.:

09/758023

Inventors:

Christopher Baldwin - Indianapolis IN
George Burnett - Clayton IN
Daniel OBrien - Mooresville IN

Assignee:

Mallory Sonalert Products, Inc. - Indianapolis IN

International Classification:

G08B 310

US Classification:

3403846, 3403841, 3403844, 34038473, 340692, 381150, 381190

Abstract:

A piezoelectric transducer driving circuit has a main oscillator stage, a buffer circuit, and a voltage-doubling circuit. The main oscillator stage includes a frequency-swept signal generator that can be configured to provide different outputs to the buffers, which in turn provide the output to the voltage-doubling circuit, which supplies the piezoelectric transducer, causing it to mechanically deform and produce audible sounds of different types.

US Patent:

6756883, Jun 29, 2004

Filed:

Nov 12, 2002

Appl. No.:

10/293957

Inventors:

George Alan Burnett - Clayton IN
Christopher Michael Baldwin - Indianapolis IN

Assignee:

Mallory Sonalert Products, Inc. - Indianapolis IN

International Classification:

G08B 300

US Classification:

3403841, 3408346, 381338, 381339, D10120

Abstract:

The invention is an improved piezoelectric noise-making and audible signaling device which produces a distinctive 2 KHz tone that is more pronounced and significantly easier to perceive, especially in a noisy environment. The volume of the audible tone is amplified by using two or three sound-amplifying chambers or cavities.

US Patent:

D570948, Jun 10, 2008

Filed:

Jan 4, 2007

Appl. No.:

29/275727

Inventors:

Milan Cerovic - Scottsdale AZ, US
Christopher W. Baldwin - Mesa AZ, US

Assignee:

TASER International, Inc. - Scottsdale AZ

International Classification:

2201

US Classification:

D22108

US Patent:

D602109, Oct 13, 2009

Filed:

Nov 8, 2007

Appl. No.:

29/297339

Inventors:

Milan Cerovic - Phoenix AZ, US
Christopher W. Baldwin - Mesa AZ, US

Assignee:

TASER International, Inc. - Scottsdale AZ

International Classification:

2201

US Classification:

D22108

US Patent:

7673411, Mar 9, 2010

Filed:

Aug 7, 2006

Appl. No.:

11/462945

Inventors:

Christopher Wallace Baldwin - Mesa AZ, US

Assignee:

TASER International, Inc. - Scottsdale AZ

International Classification:

F41C 9/00
F41B 15/04

US Classification:

42 108, 361232

Abstract:

A method is performed by an electronic weapon system. The electronic weapon system is aimed in a first direction toward a target. The method includes, deploying an electrode of the system in a second direction different from the first direction, to compensate for drag of a tether wire deployed with the electrode. For example, a tether wire deployed from a tether wire store located adjacent to a cavity from which the electrode is propelled may exert a drag force causing inaccuracies of the propelled electrode. Compensation is accomplished, for example, by virtue of shaping the cavity. Compensation improves accuracy of the electrode striking the target.

US Patent:

7880593, Feb 1, 2011

Filed:

Feb 5, 2008

Appl. No.:

12/012695

Inventors:

Christopher M. Baldwin - Avon IN, US
Daniel O'Brien - Mooresville IN, US
Mark T. Monnett - Cloverdale IN, US

Assignee:

Mallory Sonalert Products, Inc. - Indianapolis IN

International Classification:

G10K 9/20

US Classification:

3403884, 3403881, 3403841

Abstract:

The invention is an improved audible signaling device with a speaker, a sound chamber, and associated circuitry. The device creates a loud, audible fundamental frequency, and harmonic frequencies that are relatively equal in amplitude to the amplitude of the fundamental frequency.

US Patent:

7886648, Feb 15, 2011

Filed:

Oct 7, 2007

Appl. No.:

11/868512

Inventors:

Kevin Williams - Cave Creek AZ, US
Christopher Wallace Baldwin - Mesa AZ, US
Nache D. Shekarri - Phoenix AZ, US

International Classification:

F41B 15/04

US Classification:

89 111, 89 4103, 42 108, 119908, 3405731, 361232

Abstract:

Systems and methods inhibit locomotion of a human or animal target in a denial zone. Acquiring the target includes forming a prediction of at least two locations of impact on the target and testing the prediction according to criteria that may include whether the locations are within a boundary corresponding to the target and whether the locations are separated by a minimum physical and/or electrical distance.