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. 04, 2007
Filed:
Jun. 22, 2004
Muneo Ishida, Hamamatsu, JP;
Mitsuo Yamashita, Hamamatsu, JP;
Muneo Ishida, Hamamatsu, JP;
Mitsuo Yamashita, Hamamatsu, JP;
Kabushiki Kaisha Kawai Gakki Seisakusho, Hamamatsu-shi, Shizuoka, JP;
Abstract
A string-striking device for a piano, where a static loading acting on a fore-end on the playing side of a key can be easily adjusted. A long weight lever () is provided on each key (). The lever () is installed along the length direction of the keyon an upper part on the side opposite the playing side of the key (). The installation is made such that one end of the lever () is vertically pivotably fixed to a piano body and the vertically displaceable free-end side of the lever is in contact with the upper face of the key () by its own weight to apply a load on the key (). The structure above enables a static load on the key () to be adjusted by replacing the lever () without disassembling the string-striking device and removing the key ().