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. 29, 2005
Filed:
Jul. 10, 2003
Roland Gilbert, Dunham, CA;
Jocelyn Jalbert, Repentigny, CA;
Hong Phuong Nguyen, Montréal, CA;
René J. Demers, Beloeil, CA;
Roland Gilbert, Dunham, CA;
Jocelyn Jalbert, Repentigny, CA;
Hong Phuong Nguyen, Montréal, CA;
René J. Demers, Beloeil, CA;
Hydro Quebec, Quebec, CA;
Abstract
The present invention relates to an apparatus for measuring the capacitance and the dissipation factor in a transformer bushing and extracting gas dissolved in the insulating fluid of said bushing. The apparatus comprises a porous cylindrical member associated with a tap connector and covered by a thin layer of a gas permeable but liquid impermeable membrane. The porous member allows passive diffusion of the permeated gas extracted from the insulating fluid of a transformer bushing to a gas storage chamber for further analysis, thereby helping to prevent high costs related to damage or destruction of the bushing.