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:
Sep. 12, 2000
Filed:
Sep. 21, 1999
Kazutoshi Hayashi, Tokyo, JP;
Fujitsu Takamisawa Component Limited, Tokyo, JP;
Abstract
A key switch comprising a base, a key top arranged above the base, a pair of link members interconnected with each other to support the key top above the base and to direct the key top in a vertical direction, a biasing member for elastically urging the key top vertically away from the base, and a switching mechanism for selectively opening and closing an electric circuit in connection with a vertical movement of the key top. Each of the link members includes opposed first and second side walls, slide portions formed at one ends of the first and second side walls to be slidably engaged with the base, pivot portions formed at halfway points of the first and second side walls to be pivotably engaged with the key top to define a pivot axis of each link member, a joint shaft provided at another end of the first side wall to project from the first side wall, and a joint slot provided at another end of the second side wall to permit the joint shaft to be slidably and pivotably received in the joint slot of counterpart link member.