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:
Jan. 25, 2005
Filed:
Feb. 26, 2003
Shigeaki Sato, Hamamatsu, JP;
Shigeaki Sato, Hamamatsu, JP;
Yamaha Corporation, Shizuoka-ken, JP;
Abstract
A key depression detection apparatus is constituted by a sensor case incorporating key sensors, which can be easily adjusted in positions relative to an arrangement of keys on a keyboard frame (or a keybed) in a keyboard instrument such as a piano. The sensor case has a case body incorporating a key sensor and is affixed to a base member that is fixed to the keyboard frame by using a fixing member, which is constituted by a lower member and a pair of upper members. The legs of the case body are securely held by the fixing member between the lower member and upper members, which are connected together using screws accompanied with springs. Thus, an operator can easily adjust the sensor case in position relative to an arrangement of keys by manually controlling screws.