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:
Jul. 02, 2002
Filed:
Feb. 16, 2001
Osamu Suzuki, Chiyoda, JP;
Heikichi Kuwabara, Tsuchiura, JP;
Akio Yasukawa, Kashiwa, JP;
Mitsuyuki Hombu, Hitachinaka, JP;
Hirohisa Yamamura, Hitachioota, JP;
Sanshirou Obara, Toukai, JP;
Kaname Sasaki, Hitachinaka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A heat sink or cooling case has a cooling channel and at least one opening formed to face part of the channel. A first seal is provided outside the at least one opening. A cooling case has a groove located outside the first seal. Holes are discretely formed in the groove and lead from the groove to an exterior of the cooling case. A second seal is provided outside the groove. A radiating plate constituting a circuit case is mounted on the heat sink by using a clamping device inside or outside the second seal.