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. 27, 1995
Filed:
Feb. 17, 1994
Applicant:
Inventors:
Assignee:
Yamaha Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10C / ; G10C / ; G10H / ;
U.S. Cl.
CPC ...
84719 ; 84-2 ; 84-3 ; 84171 ; 8442 / ;
Abstract
An acoustic piano is equipped with an electronic sound generating system, and a key bed structure is angularly movable between an acoustic sound mode and an electronic sound mode for changing gaps between hammer heads and sets of strings, thereby allowing a player to perform a music with acoustic sounds or synthesized sounds.