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:
Aug. 07, 2001
Filed:
Jan. 12, 2000
Applicant:
Inventor:
David M. Geibel, Jackson, TN (US);
Assignee:
ABB Power T&D Company Inc., Raleigh, NC (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02G 3/18 ;
U.S. Cl.
CPC ...
H02G 3/18 ;
Abstract
An oil filled power bushing for a transformer in which the oil and nitrogen are separated by a movable piston within an expansion chamber for dividing said expansion chamber into a liquid filled section and a gas filled section, and means for sealing said piston with respect to a conductor and said expansion chamber.