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. 03, 2026
Filed:
Dec. 18, 2023
Kabushiki Kaisha Kawai Gakki Seisakusho, Hamamatsu, JP;
Anne Ishida, Hamamatsu, JP;
Masahiko Iwase, Hamamatsu, JP;
KABUSHIKI KAISHA KAWAI GAKKI SEISAKUSHO, Hamamatsu, JP;
Abstract
A keyboard device for a keyboard instrument, which is capable of realizing the same operation of an action as performed by that of a grand piano and enables to obtain the same key touch feeling and performability as provided by the grand piano during musical performance. The keyboard device includes a swingable key, an action unit operating in conjunction with depression of the key, and a hammer pivotally supported on a hammer support shaft of a hammer support and placed on the action unit via a hammer protrusion. The action unit includes a holder fixed to a rear end of the key, a repetition lever and a jack pivotally mounted to the holder, jack latching means for disengaging a hammer push-up portion of the jack from the hammer protrusion, and jack returning means for returning the hammer push-up portion to its position before disengagement.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile