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:
Nov. 06, 2001
Filed:
Apr. 01, 1999
Masaaki Kageyama, Fukushima-ken, JP;
Shouji Suganami, Fukushima-ken, JP;
Seiichi Suga, Fukushima-ken, JP;
Tsuyoshi Narusawa, Fukushima-ken, JP;
Teruyasu Fukuyama, Fukushima-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
A keyboard apparatus permits easier installation of slide retaining pins to a retaining portion and prevents intrusion of dust into the keyboard apparatus from the back surface of a supporting substrate thereof. A first retaining portion has a narrow area and a wide area, and slide retaining pins are latched in the wide area. A dust-proof sheet is provided on the bottom surface of a supporting substrate to cover through holes in the supporting substrate, the through holes resulting from the formation of the first retaining portion and second retaining portions.