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. 08, 1992
Filed:
Jun. 15, 1990
Hajime Hayashida, Hamamatsu, JP;
Toshiya Yamada, Hamamatsu, JP;
Kinya Nozaki, Hamamatsu, JP;
Akira Takemura, Hamamatsu, JP;
Yamaha Corporation, Hamamatsu, JP;
Abstract
In a sound board assembly for a musical instrument, a plurality of straight-grain wood veneers are joined together in a plane to form a plate unit having front and rear surfaces. Each of the wood veneers has two lateral sides which extend in a direction along the grain of the wood veneer. The lateral sides of the wood veneer serve respectively as a pair of abutments. One of the pair of abutments of one of each pair of adjacent wood veneers is abutted against and joined to one of the pair of abutments of the other wood veneer. A plurality of voids are formed inside of the plate unit. Substantially, the voids are formed along a neutral plane of the plate unit which is in the middle of the two surfaces. Thanks to the voids in the plate unit, the above sound board assembly is capable of sufficiently exhibiting the merit of a woody sound, capable of setting the sound quality artificially and freely, and capable of realizing the woody sound that has more warmth than in the case where high-quality natural woods are used.