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:
Mar. 28, 1995
Filed:
Jan. 19, 1993
Applicant:
Inventors:
Michihiro Aoyama, Kawasaki, JP;
Yasuo Yatsuda, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G / ; H05F / ;
U.S. Cl.
CPC ...
200305 ; 341 22 ; 361212 ;
Abstract
A data input device, such as a keyboard, comprising at least one key having a static electricity releasing circuit incorporated therein. The key comprises a manually operable keytop for pushing the membrane switch and is made from an electrically conductive plastic. At least one coil spring is provided between the keytop and the support panel or the other conductive layer that is connected to a ground. Thus a static electricity releasing circuit is formed from the keytop to the ground via the coil spring so as to instantaneously and reliably release static electricity that has accumulated on an operator to a ground.