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. 28, 2010
Filed:
Oct. 10, 2008
Shu Eitaki, Hamamatsu, JP;
Tetsuya Okano, Hamamatsu, JP;
Shu Eitaki, Hamamatsu, JP;
Tetsuya Okano, Hamamatsu, JP;
Kabushiki Kaisha Kawai Gakki Seisakusho, Shizuoka-ken, JP;
Abstract
An upright piano which is capable of providing a soft pedal effect in a first playing mode for performing acoustic playing, and an excellent performance in a second playing mode, without being affected by step-on of a soft pedal, while properly detecting the rotational position of each hammer, is disclosed. The upright piano includes sensors for detecting the rotational position of a hammer in the second playing mode, a hammer rest rail with which the hammer is in contact in a key-off state of a key, a soft pedal, a pedal rod for pushing up the hammer rest rail as the soft pedal is stepped on, a stopper movable between a permitting position and a blocking position, and a stopper drive mechanism for driving the stopper to the permitting position in the first playing mode and to the blocking position in the second playing mode.