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:
Jan. 14, 1992
Filed:
May. 22, 1990
Applicant:
Inventors:
Assignee:
Kabushiki Kaisha Kawai Gakki Seisakusho, Shizuoka, JP;
Primary Examiner:
Int. Cl.
CPC ...
G10B / ;
U.S. Cl.
CPC ...
84719 ; 84720 ; 84DI / ;
Abstract
A keyboard apparatus for an electronic keyboard musical instrument comprising a wooden key which is swingably supported by a fulcrum on a metallic keyboard chassis and which is returned from its depressed position by returning means, a precisely constructed balance rail of metal or plastic is provided on the metallic keyboard chassis, and the wooden key is directly supported by the balance rail.