Music – Instruments – Electrical musical tone generation
Patent
1988-08-04
1990-01-09
Grimley, A. T.
Music
Instruments
Electrical musical tone generation
84423R, 84433, 84DIG7, G10H 100, G10C 312
Patent
active
048920240
ABSTRACT:
There is disclosed a keyboard structure incorporated in an electronic keyboard instrument the keyboard structure including; a plurality of key members each having a depressible front end portion and a rear end portion; a plurality of flexible connecting members each merged with the rear end portion of each key member; a retainer member merged with the flexible connecting members for retaining a circuit board which carries a plurality of key switches; and a plurality of coupling members each having a first element merged with the rear end portion of each key member and a second element merged with the retainer member, and the first element is snapped into the second element, so that major members are simultaneously formed by a molding, thereby enhancing the assembling efficiency.
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patent: 3708605 (1973-01-01), Ohno
patent: 3797357 (1974-03-01), Thomas et al.
patent: 4043244 (1977-08-01), Schrecongost et al.
patent: 4079651 (1978-03-01), Matsui
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patent: 4321851 (1982-03-01), Adachi
patent: 4416178 (1983-11-01), Ishida
patent: 4488472 (1984-12-01), Kumano et al.
patent: 4653378 (1987-03-01), Watanabe et al.
Grimley A. T.
Smith Matthew S.
Yamaha Corporation
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