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:
Mar. 03, 2020
Filed:
Aug. 05, 2019
Casio Computer Co., Ltd., Shibuya-ku, Tokyo, JP;
Akihito Akaishi, Hino, JP;
Hirokazu Taniguchi, Tachikawa, JP;
CASIO COMPUTER CO., LTD., Tokyo, JP;
Abstract
A keyboard instrument including a hammer unit which includes a plurality of hammer members each of which has an effort point provided on one end side, a load point provided on an other end side, and a fulcrum provided between the effort point and the load point, and a hammer holder which rotatably holds the plurality of hammer members, and a keyboard chassis which includes a restriction member for restricting rotations of the plurality of hammer members performed in response to key depression operations within a restriction range and in which the hammer unit is mounted, in which the hammer holder has a plurality of contact points on the effort point side which comes in contact with portions of the plurality of hammer members on the effort point side when the hammer unit is in a vertically inverted state.