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:
Oct. 22, 2002
Filed:
Oct. 23, 2000
Applicant:
Inventor:
Manabu Arimori, Shizuoka-ken, JP;
Assignee:
Kabushiki Kaisha Kawai Gakki Seisakusho, Shizuoka-ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10C 1/00 ;
U.S. Cl.
CPC ...
G10C 1/00 ;
Abstract
In an apparatus for opening an closing a top board of a grand piano, the top board is hingedly supported along one side thereof on an outer rim of the grand piano. The apparatus has a gear-type of jack made up of a jack main body fixed to a wooden fame of the grand piano, and a rod which is movable in a longitudinal direction through the jack main body and which supports the top board in a manner to open and close said top board.