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:
Jun. 09, 2009
Filed:
Jun. 18, 2007
Yutaka Toyama, Hamamatsu, JP;
Yutaka Toyama, Hamamatsu, JP;
Yamaha Corporation, Hamamatsu-Shi, JP;
Abstract
A keyboard apparatus of an electronic keyboard instrument, which is compact in size and broad in a permissible movable range at the time of receiving a force exerting in a width direction of keys. The keyboard apparatus includes key main bodies each provided with a key-fulcrum function device permitting a key to be pivotable in the key depression/release direction and including a vertical hinge and a left-to-right hinge. The vertical hinge is formed into a thin plate-like piece member extending downward of the key and coupled to a common base end and the left-to-right hinge, which is formed into a thin plate-shaped piece member extending along the longitudinal direction of the key and coupled to a connecting portion that is formed into a plate shape extending downward of the key and coupled to the key main body.