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:
Jan. 19, 1999
Filed:
Dec. 30, 1996
Applicant:
Inventors:
Yasutoshi Kaneko, Hamamatsu, JP;
Kiyoshi Kawamura, Hamamatsu, JP;
Assignee:
Yamaha Corporation, Shizuoka-ken, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G10F / ;
U.S. Cl.
CPC ...
84 13 ;
Abstract
An automatic player piano has solenoid-operated key actuator units under a keyboard mounted on a wooden key bed, and the solenoid-operated key actuator units are supported by a frame structure inserted into a slot formed in the wooden key bed and bolted to metallic bracket members screwed to the wooden key bed; when the frame structure is taken out for a repairing work, the bracket members are never removed from the wooden key bed, and the bolt holes of the wooden key bed are never undesirably enlarged.