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:
Dec. 04, 1990
Filed:
May. 18, 1989
Applicant:
Inventor:
Alexander Krinickas, Jr, Rockford, IL (US);
Assignee:
Sundstrand Corporation, Rockford, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
H01F / ; H01F / ;
U.S. Cl.
CPC ...
336 60 ; 336197 ; 336215 ;
Abstract
A variable speed, constant frequency generating system has a neutral forming autotransformer connected between a variable speed generator and an AC to AC converter. The converter includes a three phase, full wave rectifier with positive and negative rails connecting the rectifiers with a DC to AC inverter. Each turn of the transformer windings has at least one surface exposed to air for cooling.
Krinickas, Jr, Alexander. (1990). Air cooled transformer (U.S. Patent No. 4975670). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4975670
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile