Note release control method for solenoid actuated piano actions

Details Note release control method for solenoid actuated piano actions Note release control method for solenoid actuated piano actions

1999-04-19

2000-11-28

Ro, Bentsu

Music

Instruments

Automatic

84439, 84440, G10F 102, G10C 312

Patent

active

061538191

ABSTRACT:
A method for eliminating or reducing noise created by the action mechanisms of piano keys during its return stroke after striking a string, by regulating the amount of time for the mechanism to return to rest. The method comprises the steps of sequentially initiating a pair of braking pulses by the actuator solenoid to slow the action mechanism during its return stroke. Each braking pulse is of a specified duration and magnitude such that the mechanism's return time is maximized while eliminating the possibility of double hits on the string.

REFERENCES:
patent: 5650580 (1997-07-01), Yamamoto et al.
patent: 5756910 (1998-05-01), Fields et al.
patent: 5880393 (1999-03-01), Kaneko et al.
patent: 5922983 (1999-07-01), Muramatsu

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