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:
Sep. 08, 2020
Filed:
Jan. 22, 2019
Yamaha Corporation, Hamamatsu-shi, JP;
Kento Ogawa, Funabashi, JP;
Shunsuke Ichiki, Hamamatsu, JP;
YAMAHA CORPORATION, Hamamatsu-Shi, JP;
Abstract
A keyboard apparatus includes: a key disposed to be pivotable with respect to a frame; a hammer assembly disposed to be pivotable in response to pivotal movement of the key; a first member; a second member disposed to be slid and moved on the first member when the hammer assembly pivots in response to pivotal movement of the key; and a third member connected to the first member and configured to guide the second member such that the second member is not located at a distance greater than or equal to a predetermined distance from the first member, the third member having a shape in which a second contact area that is an area of contact between the second member and the third member is less than a first contact area that is an area of contact between the first member and the second member.