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. 19, 1995
Filed:
Feb. 04, 1993
Applicant:
Inventors:
Jun Yamamoto, Shizuoka, JP;
Shinya Koseki, Shizuoka, JP;
Assignee:
Yamaha Corporation, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G10F / ; G10C / ;
U.S. Cl.
CPC ...
84 34 ; 84 21 ; 84221 ;
Abstract
An automatic player piano largely comprises mechanical components such as a keyboard, key action mechanisms, hammer mechanisms, damper mechanisms and pedal mechanisms and electrical components such as solenoid operated actuators associated with the keyboard and the pedal mechanism, a controller and sensors, and the pedal mechanism for a soft pedal is further associated with a mute lock mechanism so that the pedal mechanism can cause the hammers closer to the associated music wires for producing faint sounds.