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:
Dec. 27, 1994
Filed:
Aug. 10, 1993
Katsuki Matsunaga, Kawasaki, JP;
Yasushi Kojima, Kawasaki, JP;
Naoya Yamazaki, Kawasaki, JP;
Kiyoshi Yoshida, Kawasaki, JP;
Yoshinori Hoshino, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A heat radiating apparatus for a semiconductor device, in which said semiconductor device mounted on a circuit board is cooled by a radiator. The radiator is provided with a stepped portion, and fixing spring hardware having slit grooves is provided with a notch engaging with the stepped portion, so that the end of radiator is brought into contact with the outer surface of the semiconductor device when the stepped portion of the radiator engages with the notch portion of the fixing spring hardware. The stepped portion of the radiator is constituted of two stages, and the notch of the fixing spring hardware is provided with two notch portions engaging with the two-stage stepped portions of the radiator, respectively, so that the larger-diameter portion of the two-stage stepped portions of the radiator engages with the farthermost portion of the notch. Further, a male threaded portion is installed near the end of the radiator so that the male threaded portion of the radiator is threadedly fixed to the farthermost portion of the notch of the fixing spring hardware.