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:
Jun. 19, 2001
Filed:
Sep. 07, 1999
Satoshi Inoue, Shizuoka-ken, JP;
Yamaha Corporation, Hamamatsu, JP;
Abstract
A keyboard musical instrument is a combination of an acoustic upright piano without strings and an electronic tone generating system, and a hammer receiver is beaten with hammers respectively linked with key action mechanisms, wherein the each of the hammers has a hammer shank fixed to a butt of the key action mechanism and a weight member attached to the hammer shank, and the weight member has a center of gravity in the vicinity of the center of gravity in a hammer head of a regular hammer usually incorporated in the standard upright piano so that the key touch is identical with or similar to that of the piano key touch.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile