Peter James Turner

US Patent:

8103328, Jan 24, 2012

Filed:

Oct 1, 2008

Appl. No.:

12/243461

Inventors:

Peter James Turner - San Diego CA, US
Robert Matthews - San Diego CA, US
Jamison Scott Woodward - Solana Beach CA, US
Konstantine V. Ermolaev - San Diego CA, US
Andrew D. Hibbs - La Jolla CA, US

Assignee:

Quantum Applied Science and Research, Inc. - San Diego CA

International Classification:

A61B 5/0478
A61B 19/00

US Classification:

600383, 600544, 600553, 600587

Abstract:

A self-locating mounting apparatus for holding objects such as sensors at specific positions on a subject's head includes a central mount constituted by a plurality of inextensible elements adapted to fit over the top of a subject's head. In addition, the mounting apparatus includes an adjustable circumferential band adapted to circle the subject's head and connect the central mount to inextensible side elements via sliding joints. A plurality of biasing elements provide a force for biasing sensor mounting units on the mounting apparatus against a subject's head, allowing for long-term sensing while minimizing interference forces on the mounting units. Advantageously, the mounting apparatus holds sensors within approximately 5 mm of their desired measurement positions over a range of subject head sizes.

US Patent:

7362182, Apr 22, 2008

Filed:

Aug 31, 2005

Appl. No.:

11/216923

Inventors:

Leonid S. Barabash - Poway CA, US
Christopher W. Crowley - San Diego CA, US
Peter J. Turner - San Diego CA, US

Assignee:

GE Security, Inc. - Austin TX

International Classification:

H03F 3/04
H01F 27/28

US Classification:

330301, 336170

Abstract:

A radio frequency power amplifier including control electronics for providing control signals for timing of the power amplifier. A first group of the drivers are coupled to the control electronics and a second group of drivers are coupled to the control electronics. The first group of drivers operate in response to the control signals to generate first drive signals and the second group of drivers operate in response to the control signals to generate second drive signals with a phase difference of 180 relative to the first drive signals. A first group of switches energize a first group of primary windings in response to the first drive signals and a second group of switches energize a second group of primary windings in response to the second drive signals. An output summing transformer has a plurality of ferrite cores, the first group of primary windings and the second group of primary windings passing through the ferrite cores. A secondary output winding for connection with a load passes through the ferrite cores of the output summing transformer.