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. 05, 2013
Filed:
Jan. 04, 2012
Hiroyuki Murakami, Kakegawa, JP;
Hiroyuki Murakami, Kakegawa, JP;
Yamaha Corporation, Hamamatsu-shi, JP;
Abstract
A key drive device to be installed on a musical instrument with a keyboard partly located above a leg block via a key bed, including: drive units to be at least partly inserted into a removal space in the key bed. In a state in which the drive units are installed, at least one drive unit which drives at least one key located above the leg block includes: (a) a first portion at least a part of which is inserted into an insertion space portion of the removal space between the leg block and the keyboard; and (b) a second portion at least a part of which is disposed in other space portion of the removal space, a dimension of the second portion in at least one of a vertical direction and a horizontal short-side direction being larger than that of the first portion.