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:
Feb. 26, 1991
Filed:
Aug. 24, 1989
Applicant:
Inventor:
Fumitaka Takahashi, Shizuoka, JP;
Assignee:
Kawai Gakki Seisakusho Co., Ltd., Hamamatsu, JP;
Primary Examiner:
Int. Cl.
CPC ...
G10C / ;
U.S. Cl.
CPC ...
84237 ;
Abstract
An action mechanism for the piano in which a jack is resiliently and rotatably mounted on a rear portion of a key, a jack receiver and a push-out protrusion are provided on a hammer support member that is rotatably mounted at its one end on a hammer shank rail via a flange over the key, and when the key is depressed, the hammer is turned toward the sound producing member owing to the engagement of the tip of said jack and said jack receiver and, at the same time, the engagement between the jack and the jack receiver is released by the push-out protrusion.