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:
Oct. 26, 1999
Filed:
Feb. 25, 1998
Applicant:
Inventors:
Kunihiko Watanabe, Yokkaichi, JP;
Toshiro Shimada, Osaka, JP;
Assignees:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F / ; H01F / ;
U.S. Cl.
CPC ...
336131 ; 336 59 ; 336 60 ; 336212 ; 320108 ;
Abstract
A core assembly for coil units and a method for producing the same which can suppress a raise of temperature are provided. A secondary core (21) made of a ferrite includes a pair of core members (25, 25) which are symmetrical with respect to each other and are adapted to be coupled to each other. Each core member (25) is provided in its coupling surface (44) with a groove or apertune (43). When the core members (25, 25) are coupled to each other, the integrated grooves (43, 43) define a flow path (40) adapted to flow a cooling medium in the secondary core (21). Thus, it is possible to form a flow path in a core made of a sintered material which is too hard to be worked.