Solenoid actuator for use in automatic performance piano
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United States of America Patent
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Apr 30, 1985
Grant Date -
N/A
app pub date -
Aug 18, 1982
filing date -
Sep 8, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a solenoid actuator for use in an automatic performance keyboard instrument of the type comprising a key bed and a plurality of keys mounted on the key bed through seesaw mechanisms, electromagnetic actuators respectively corresponding to the keys and having a common yoke are disposed between the key bed and the keys. Each of the electromagnetic actuators independently actuates the corresponding key. The yoke and the electromagnetic actuators are assembled into a compact unit, thereby being readily incorporated between the key bed and the keys.
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