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:
May. 13, 1986
Filed:
Dec. 13, 1984
Yoshinobu Harumoto, Toyono County, Osaka, JP;
Yoshio Yoshida, City of Minoo, Osaka, JP;
Yuichi Kabayama, City of Katano, Osaka, JP;
Hisao Kan, Ako, JP;
Tetsuro Hakata, Ako, JP;
Takahiro Matsumoto, Ako, JP;
Other;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A transformer has a vertical winding assembly formed of a stack of pancake coils sandwiched between electrically insulating bases each provided on its surface contacted by an associated one of pancake coils with a plurality of cooling grooves extending in spaced relationship along turns of a rectangular electrically conductive wire forming the pancake coil and opening on the upper and lower portions of the base. A liquid refrigerant sprinkled on the winding assembly is arranged to flow through the cooling grooves via the upper open ends and be discharged via the lower open ends.