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. 18, 1996
Filed:
May. 27, 1994
Applicant:
Inventors:
Jun Yamamoto, Shizuoka, JP;
Tsutomu Sasaki, Shizuoka, JP;
Assignee:
Yamaha Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10F / ;
U.S. Cl.
CPC ...
84 18 ; 84 20 ;
Abstract
A plurality of solenoid-operated actuator units are incorporated in an automatic player piano for selectively driving keys in a playback mode, and share two elongated yoke members interdigitated with one another so as to house the solenoid-operated actuator units as close as possible without sacrifice of electro-magnetic forces produced thereby.