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:
Apr. 16, 1991
Filed:
Apr. 26, 1990
Applicant:
Inventors:
Chiaki Tanuma, Tokyo, JP;
Kazuhiro Itsumi, Kawasaki, JP;
Nobuo Iwase, Kamakura, JP;
Tomio Ono, Yokohama, JP;
Yuu Kondo, Yokohama, JP;
Kazutaka Saito, Kawasaki, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
310332 ; 310800 ; 310330 ; 310324 ; 416 83 ; 417322 ; 417436 ;
Abstract
In an electric device having a package included an electric circuit element therein, a cooling fan is fixed on the package directly. The fan is formed of piezoelectric elements and a flexible cooling fin. The fan generates the cooling air flow due to vibration of the piezoelectric elements.