Music – Instruments – General features
Patent
1988-09-12
1989-08-15
Hix, L. T.
Music
Instruments
General features
G10C 312
Patent
active
048564079
ABSTRACT:
An action mechanism for a keyboard of an electronic piano which is capable of producing a touch that is nearly equal to that of an ordinary piano. The action mechanism comprises an action spring including a friction spring portion to produce a friction force which always opposes depression and restoring movements of key members.
REFERENCES:
patent: 4375179 (1983-03-01), Schwartz et al.
Katsuta Masanori
Yamaguchi Tsutomu
Brown Brian W.
Hix L. T,.
Kabushiki Kaisha Kawai Gakki Seisakusho
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