Keyboard musical instrument having hammer stopper exactly positi

Details Keyboard musical instrument having hammer stopper exactly positi Keyboard musical instrument having hammer stopper exactly positi

1995-07-18

1997-03-11

Witkowski, Stanley J.

Music

Instruments

Electrical musical tone generation

84720, 84171, 84236, 84423R, G10C 312, G10C 500, G10D 1500, G10H 134

Patent

active

056103565

ABSTRACT:
A keyboard musical instrument selectively enters into an acoustic sound mode for generating acoustic piano tones and an electronic sound mode for generating electronic sounds instead of the acoustic piano tones, and a stopper is changed between a free position and a blocking position by an actuator controlled through detection with photo-interrupters, thereby eliminating aged deterioration from the position control between the free position and the blocking position.

REFERENCES:
patent: 5374775 (1994-12-01), Kawamura et al.

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