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. 17, 2002
Filed:
Apr. 26, 2001
Applicant:
Inventors:
Nobuo Sugiyama, Shizuoka, JP;
Shigeaki Sato, Shizuoka, JP;
Assignee:
Yamaha Corporation, Hamamatsu, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G10C 3/112 ;
U.S. Cl.
CPC ...
G10C 3/112 ;
Abstract
A composite keyboard musical instrument includes an acoustic grand piano, an electronic sound generating system and a silent system, and an electric motor, a hammer stopper, a link work and a controller form in combination the silent system, wherein rigid arms and rigid rods are assembled into the link work so as to promptly transmit the force from the actuator to the hammer stopper without substantial time lug.