Upright piano

Details Upright piano Upright piano

2008-10-10

2010-12-28

Qin, Jianchun (Department: 2832)

Music

Instruments

Stringed

Reexamination Certificate

active

07858858

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.

REFERENCES:
patent: 5200570 (1993-04-01), Kawamura
patent: 5451706 (1995-09-01), Yamamoto et al.
patent: 5539142 (1996-07-01), Emerson et al.
patent: 2008/0011151 (2008-01-01), Kato
patent: 1 837 853 (2007-09-01), None
patent: 2007-079312 (2007-03-01), None

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