Joseph C Mitchell

Author:

Joseph R. Mitchell

ISBN #:

0072371552

Author:

Joseph R. Mitchell

ISBN #:

0072448164

Author:

Joseph R. Mitchell

ISBN #:

0072548576

Author:

Joseph R. Mitchell

ISBN #:

0072548665

Author:

Joseph R. Mitchell

ISBN #:

0073104833

Author:

Joseph R. Mitchell

ISBN #:

0073397407

Author:

Joseph R. Mitchell

ISBN #:

0073514926

Author:

Joseph R. Mitchell

ISBN #:

0073514993

Address:

11463 Enchanted Sunset St, San Antonio, TX 78253

Phone:

210 679-8408

VIN:

5TEMU52N87Z425570

Make:

TOYOTA

Model:

TACOMA

Year:

2007

US Patent:

6587612, Jul 1, 2003

Filed:

Sep 6, 2000

Appl. No.:

09/656092

Inventors:

Joseph Nathan Mitchell - San Antonio TX

Assignee:

Southwest Research Institute - San Antonio TX

International Classification:

G02B 626

US Classification:

385 18, 385 19, 385 17, 359223, 359224

Abstract:

A thermally actuated spectroscopic optical switch including reflective surfaces which are selectively moved into a position intersecting a beam of light by applying electrical or heat energy to a selected composite cantilever beam on which the reflective surface is mounted.

US Patent:

6608714, Aug 19, 2003

Filed:

Jun 28, 2001

Appl. No.:

09/892616

Inventors:

Heather Shannon Hanson - San Antonio TX
Joseph Nathan Mitchell - San Antonio TX

Assignee:

Southwest Research Institute - San Antonio TX

International Classification:

G02B 2600

US Classification:

359296, 359288, 359290

Abstract:

A thermal actuator includes a first arm having a proximal end and a distal end, a second arm, parallel to the first arm, having a proximal end and a distal end, and a third arm arranged between and parallel to the first and second arms, the third arm having a proximal end and a distal end. The third arm has at least one portion at the distal end of the third arm having a width that is substantially larger than a width of the first arm and a width of the second arm. The distal ends of the first, second and third arms are coupled together to form a distal end of the thermal actuator, and the first, second and third arms preferably are made of a single material. A number of thermal actuators can be arranged in an array. The thermal actuator or array of thermal actuators can be coupled to an applicator.

US Patent:

6930254, Aug 16, 2005

Filed:

Aug 14, 2003

Appl. No.:

10/641511

Inventors:

Andrew J. Philips - Charlotte NC, US
Mary C. Marshall - San Antonio TX, US
Joseph N. Mitchell - San Antonio TX, US

Assignee:

Electric Power Research Institute - Palo Alto CA

International Classification:

H01B017/34

US Classification:

174140C, 174137 A, 174137 B, 174137 R, 174138 R, 174179, 428414

Abstract:

A composite insulator containing means for providing early warning of impending failure due to stress corrosion cracking, flashunder, or destruction of the rod by discharge activity conditions is described. A composite insulator comprising a fiberglass rod surrounded by a polymer housing and fitted with metal end fittings on either end of the rod is doped with a dye-based chemical dopant. The dopant is located around the vicinity of the outer surface of the fiberglass rod. The dopant is formulated to possess migration and diffusion characteristics correlating to those of water, and to be inert in dry conditions and compatible with the insulator components. The dopant is placed within the insulator such that upon the penetration of moisture through the housing to the rod through a permeation pathway in the outer surface of the insulator, the dopant will become activated and will leach out of the same permeation pathway. The activated dopant then creates a deposit or stain on the outer surface of the insulator housing. The dopant comprises a dye that is sensitive to radiation at one or more specific wavelengths or is visually identifiable.

US Patent:

7002079, Feb 21, 2006

Filed:

Apr 4, 2005

Appl. No.:

11/099187

Inventors:

Joseph N. Mitchell - San Antonio TX, US
Spring M. Haby - San Antonio TX, US
Dennis S. Rushforth - San Antonio TX, US
Mark E. Van Dyke - Winston Salem NC, US
Andrew J. Philips - Charlotte NC, US
Mary C. Marshall - San Antonio TX, US

Assignee:

Electric Power Research Institute - Palo Alto CA

International Classification:

H01B 17/34

US Classification:

174140C, 174137 A, 174137 B, 174137 R, 174138 R, 174179, 428414

Abstract:

A composite insulator containing means for providing early warning of impending failure due to stress corrosion cracking, flashunder, or destruction of the rod by discharge activity conditions is described. A composite insulator comprising a fiberglass rod surrounded by a polymer housing and connected with metal end fittings on either end of the rod is doped with a dye-based chemical dopant. The dopant is located around the vicinity of the outer surface of the fiberglass rod. The dopant is formulated to possess migration and diffusion characteristics, and to be inert in dry conditions and compatible with the insulator components. The dopant is positioned within the insulator such that upon the penetration of moisture through the housing to the rod through a permeation pathway in the outer surface of the insulator, the dopant will become activated and will leach out of the same permeation pathway or diffuse through the housing. The activated dopant then creates a deposit or stain on the outer surface of the insulator housing. The dopant comprises an oil-soluble dye, an indicator, or a stain compound that can either be visually identified, or is sensitive to radiation at one or more specific wavelengths.

US Patent:

7061628, Jun 13, 2006

Filed:

Jun 27, 2002

Appl. No.:

10/184003

Inventors:

Ernest A. Franke - San Antonio TX, US
Michael J. Magee - Rio Medina TX, US
Michael P. Rigney - San Antonio TX, US
Joseph N. Mitchell - San Antonio TX, US
Robert J. Beeson - Catonsville MD, US

Assignee:

Southwest Research Institute - San Antonio TX

International Classification:

G01B 11/24

US Classification:

356604

Abstract:

Embodiments of the invention provide a non-contact method for measuring the surface profile of an object that can include generating a point-type optical signal and projecting it on a rotatable precision optical grating, generating a rotating pattern of light and dark lines onto the object, recording a series of images of the rotating pattern moving across the object with an image receiving device and calculating the surface profile of the object. Other embodiments can include a method to calibrate the system and a non-contact apparatus that generally includes a point-type light source, a rotatably mounted optical grating being configured to project a moving grating image on the object, a processor in communication with the image capturing device and configured to receive image input from the image capturing device and generate a surface profile representation of the object therefrom.

US Patent:

7382471, Jun 3, 2008

Filed:

Dec 22, 2005

Appl. No.:

11/313671

Inventors:

Ernest A. Franke - San Antonio TX, US
Michael J. Magee - Rio Medina TX, US
Michael P. Rigney - San Antonio TX, US
Joseph N. Mitchell - San Antonio TX, US
Robert J. Beeson - Catonsville MD, US

Assignee:

Southwest Research Institute - San Antonio TX

International Classification:

G01B 11/24

US Classification:

356604

Abstract:

Embodiments of the invention provide a non-contact method for measuring the surface profile of an object that can include generating a point-type optical signal and projecting it on a rotatable precision optical grating, generating a rotating pattern of light and dark lines onto the object, recording a series of images of the rotating pattern moving across the object with an image receiving device and calculating the surface profile of the object. Other embodiments can include a method to calibrate the system and a non-contact apparatus that generally includes a point-type light source, a rotatably mounted optical grating being configured to project a moving grating image on the object, a processor in communication with the image capturing device and configured to receive image input from the image capturing device and generate a surface profile representation of the object therefrom.

US Patent:

7952706, May 31, 2011

Filed:

May 17, 2008

Appl. No.:

12/122678

Inventors:

Jian Ling - San Antonio TX, US
Joseph N. Mitchell - San Antonio TX, US
Michael E. Sullivan - Raleigh NC, US
Mark R. Heistand - San Antonio TX, US
Jon Nazemi - Cambridge MA, US
William Fraker - Cave Creek AZ, US

Assignee:

Prescient Medical, Inc. - Doylestown PA

International Classification:

G01J 3/44

US Classification:

356301

Abstract:

The invention provides unitary optics modules that integrate several light management functions for performing optical spectroscopy, such as Raman spectroscopy, and optical spectroscopy systems that include one or more of the unitary optics modules. Methods of using the modules and systems are also provided.

US Patent:

8085301, Dec 27, 2011

Filed:

Mar 16, 2009

Appl. No.:

12/381767

Inventors:

Joseph Nathan Mitchell - San Antonio TX, US

Assignee:

Southwest Research Institute - San Antonio TX

International Classification:

H04N 5/33

US Classification:

348164, 25033906

Abstract:

Techniques are disclosed relating to gas leak detection. The techniques can be deployed, for example, in compact, handheld portable devices usable for detecting leaks in space-confined applications. The devices generally include an unstablized laser and thermal imaging camera that allow for detection of gas that absorbs at least some of the wavelength of operation of the unstablized laser. The devices can be operated at a low-power density for safety and/or may be configured to mitigate wavelength hopping associated with unstablized laser light sources.