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. 07, 2023
Filed:
Oct. 08, 2021
Applicant:
Roland Corporation, Shizuoka, JP;
Inventor:
Yukihide Takata, Shizuoka, JP;
Assignee:
Roland Corporation, Shizuoka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10C 1/00 (2006.01);
U.S. Cl.
CPC ...
G10C 1/00 (2013.01);
Abstract
Provided is a keyboard apparatus including: a hammer, having a mass body on one end side, rotating in a first direction by being pushed on the other end side when a key is pressed; and a load application member, applying, to the hammer, at least one of a first load directed in the first direction and a second load directed in a second direction opposite the first direction. The first load is a load that gradually increases as approaching a terminal position of the key in key pressing. The second load is a load that gradually decreases as approaching the terminal position.