Kenneth C Cook

US Patent:

7138794, Nov 21, 2006

Filed:

Mar 10, 2000

Appl. No.:

09/522563

Inventors:

Kenneth F. Cook - Cincinnati OH, US
Robert D. Wittenbach - Lebanon OH, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

H02H 3/26
G01R 33/00
G01B 7/00

US Classification:

32420718, 32420712, 324511, 361 78

Abstract:

Systems and methods for detecting faults in RVDTs and LVDTs are described. In an exemplary embodiment, a sum of secondary voltages V1 and V2 from a transducer is obtained by adding the secondary voltages together, i. e. ; V1+V2. This sum of secondary voltages theoretically should be constant for all LVDT/RVDT positions, since the total length of the secondary transformer is constant. An electrical fault in the primary or secondary windings generates a corresponding change in the sum of secondary voltages. By comparing this shifted value to a reference value which is representative of a no-fault condition, an error value is created which indicates the magnitude of the shift in the sum of the secondary values. Depending upon the magnitude of the error value, certain actions are taken.

US Patent:

62050095, Mar 20, 2001

Filed:

Jul 22, 1999

Appl. No.:

9/359478

Inventors:

Aidan W. Clark - Cincinnati OH
Kenneth F. Cook - Cincinnati OH
Robert D. Wittenbach - Lebanon OH
Deepak M. Kamath - Cincinnati OH

Assignee:

General Electric Company - Cincinnati OH

International Classification:

H02H 318

US Classification:

361 78

Abstract:

A method for detecting fault in a resolver generating a sine voltage and a cosine voltage. The method includes obtaining a sum of a square of the sine voltage and a square of the cosine voltage. The sum is filtered through a first filter having a first time constant to generate a first filter output. The sum is also filtered through a second filter having a second time constant to generate a second filter output. The first filter output and second filter output are compared to detect a fault in the resolver.

US Patent:

6024738, Feb 15, 2000

Filed:

Jul 11, 1997

Appl. No.:

8/893738

Inventors:

Norio Daikuzono - Tokyo, JP
John Vanden Hoek - Florence KY
Kenneth P. Cook - Blue Bell PA
Robert Bross - Ivyland PA

Assignee:

Surgical Laser Technologies, Inc. - Montgomeryville PA

International Classification:

A61N 506

US Classification:

606 7

Abstract:

A laser catheter for the treatment of lesions and plaque deposits in arteries and other narrow paths having a radiation assembly affixed to a flexible conduit. The conduit generally includes multiple lumens for the passage of an optical fiber, a guide wire, a cooling medium therethrough, or fluid for inflating an angioplasty balloon. The radiation assembly is of short longitudinal profile and includes a generally spherical laser contact member retained within a housing, the latter affixed to the flexible conduit. The radiation assembly provides a dual-mode ablation/melting treatment regime. A longitudinal channel is provided through and along one side of the contact member thereby to permit guide wire positioning of the laser catheter while routing the guide wire away from the laser energy to avoid damage thereto. A balloon, in fluid communication with a catheter lumen, may be positioned rearwardly of the radiation assembly for secondary balloon angioplasty operations.

Address:

800 Lombardy Ave, Newport News, VA 23606

VIN:

3LNHL2GC3BR761853

Make:

LINCOLN

Model:

MKZ

Year:

2011

Address:

6946 Old Nashville Hwy, Murfreesboro, TN 37129

Phone:

6158953893

VIN:

3MEHM08177R631213

Make:

MERCURY

Model:

MILAN

Year:

2007