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. 03, 1996
Filed:
Mar. 28, 1995
Applicant:
Inventors:
Nobuo Sugiyama, Shizuoka, JP;
Kiyoshi Kawamura, Shizuoka, JP;
Assignee:
Yamaha Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10D / ;
U.S. Cl.
CPC ...
84171 ; 84719 ; 84243 ;
Abstract
A keyboard musical instrument has an acoustic piano for generating acoustic sound in an acoustic sound mode, an electronic sound generating system for generating electronic sounds on the basis of detecting signals of hammer sensors in an electronic sound mode and a stopper operative to prevent strings from hammers in the electronic sound mode, and a change-over mechanism changes the hammer sensors between a closed position and a spaced position so that the electronic sound generating system exactly determines the intensities of the electronic sounds.