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:
Oct. 10, 2000
Filed:
Sep. 22, 1998
Applicant:
Inventor:
Akio Nishijima, Fukushima-ken, JP;
Assignee:
Alps Electric Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05K / ;
U.S. Cl.
CPC ...
200293 ; 361687 ; 361689 ;
Abstract
In a keyboard device, a cooling heat pipe containing a coolant is formed integrally with a support plate. The cooling heat pipe is incorporated in a personal computer in close proximity to an IC component that generates a large quantity of heat, it is possible to cool both IC component and switch member. It is therefore possible to suppress elongation of the sheets that comprise the switch member. The keyboard is kept free of any contact defect formed as a result of this expansion due to heating and subsequent contraction due to cooling.