The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 27, 2001
Filed:
Sep. 28, 1999
Applicant:
Inventor:
John Raymond Krahn, Niskayuna, NY (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01H 3/112 ; G01R 2/726 ;
U.S. Cl.
CPC ...
H01H 3/112 ; G01R 2/726 ;
Abstract
A stray field electrode (,) includes a base material (,) and a conductive filler material (,). The base material is preferably an insulating material, such as a silicone elastomer film. The conductive filler material is preferably a metal, such as silver particles dispersed in the silicone elastomer film. A set of stray field electrodes (,) may be used to determine the presence of water in a material (,), such as electrical generator insulation (,), by comparing a phase angle for the electric field (,) between the electrodes with a predetermined phase angle for a dry material (,).