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:
Dec. 13, 2016
Filed:
Sep. 08, 2014
Applicant:
Yamaha Corporation, Hamamatsu-Shi, Shizuoka-Ken, JP;
Inventors:
Tadaharu Kato, Hamamatsu, JP;
Toshiro Sakai, Hamamatsu, JP;
Assignee:
Yamaha Corporation, Hamamatsu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10C 3/02 (2006.01); B29C 44/02 (2006.01); B29K 55/02 (2006.01); B29K 105/00 (2006.01); B29K 105/04 (2006.01); B29L 9/00 (2006.01); B29L 31/00 (2006.01);
U.S. Cl.
CPC ...
G10C 3/02 (2013.01); B29C 44/02 (2013.01); B29K 2055/02 (2013.01); B29K 2105/0005 (2013.01); B29K 2105/04 (2013.01); B29L 2009/00 (2013.01); B29L 2031/758 (2013.01);
Abstract
Provided is a keyboard musical instrument such as an acoustic piano or an electronic piano having an appearance and design similar to an acoustic piano, in which a fall board is made of a resin plate-shaped body, and hollow portions are provided inside the plate-shaped body. In addition, the plate-shaped body includes a plate-shaped resin foamed plate portion, and the hollow portions are made of plural air bubbles contained inside the resin foamed plate portion.