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:
Jun. 08, 2010
Filed:
Jun. 02, 2005
Hideharu Okayama, Fukuoka, JP;
Kenji Isomoto, Fukuoka, JP;
Shuhei Nohara, Fukuoka, JP;
Toshio Omata, Fukuoka, JP;
Hideharu Okayama, Fukuoka, JP;
Kenji Isomoto, Fukuoka, JP;
Shuhei Nohara, Fukuoka, JP;
Toshio Omata, Fukuoka, JP;
Kabushiki Kaisha Yaskawa Denki, Fukuoka, JP;
Abstract
A motor controller which eliminates a positioning operation between a power semiconductor element and a base plate to improve the assembly process is provided. The motor controller has a power semiconductor element closely contacted with a heatsink and mounted in a first base plate, wherein a spacer having an engaging section formed therein as a hole for the power semiconductor element is interposed between the heatsink and the base plate, and the power semiconductor element is positioned in the spacer. Further, the peripheral wall of the hole is arranged so as to shut off a space between a terminal projecting from the side of the power semiconductor element and the heatsink.