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. 10, 2004
Filed:
Sep. 08, 2003
Applicant:
Inventor:
Takeshi Ogawa, Fukuoka, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 2/348 ;
U.S. Cl.
CPC ...
H01L 2/348 ;
Abstract
A polygonal nut for receiving a clamping bolt is securely inserted in a nut insertion hole which is formed in the thin portion of the resin case , and the polygonal nut is engaged with an inner surface of the nut insertion hole . The inner surface of the nut insertion hole has a round-shaped notch concave portion formed at a position confronting to a corresponding corner portion of the polygonal nut so that the corner portion of the polygonal nut is not in contact with a resin case member to thereby prevent the resin case from being cracked.