Music – Instruments – General features
Patent
1982-06-15
1984-10-02
Griffin, Donald A.
Music
Instruments
General features
G10C 312
Patent
active
044741006
ABSTRACT:
A musical keyboard includes a key bed having fulcrums formed therein, a row of keys each having a supported portion located at the rear end thereof for pivotal contact with the corresponding fulcrum for vertical swinging between a rest position and an operative position, and a resilient device for urging the keys upwards to said rest position. The resilient device has a leaf spring positioned below the keys and secured to the key bed to extend substantially horizontally towards the fulcrums, the free end of said leaf spring engaging the lower surface of each key to urge the key upwards.
REFERENCES:
patent: 2565239 (1951-08-01), Kostka
patent: 3570359 (1971-03-01), Ohno
Griffin Donald A.
Nippon Gakki Seizo Kabushiki Kaisha
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