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:
Jun. 29, 1976
Filed:
Oct. 17, 1974
Applicant:
Inventor:
Allan Igo Bennett, Export, PA (US);
Assignee:
Westinghouse Electric Corporation, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
324 54 ; 324 / ;
Abstract
A circuit modification of a capacitance bridge is provided to measure void content of high voltage electrical insulation. A sample of the insulation under investigation is disposed as the capacitor dielectric in one leg of a capacitance bridge. Signals proportional to the input and output of the capacitance bridge are fed to an oscillograph for display which is shaped like a parallelogram. In the disclosed invention a simple adjustment converts the parallelogram to a rectangle and the amount of adjustment required is read as a number from which the void content can be directly calculated.