Music – Instruments – General features
Patent
1978-03-24
1979-09-25
Franklin, Lawrence R.
Music
Instruments
General features
84251, 84423, 84452P, G10C 312
Patent
active
041686497
ABSTRACT:
A keyboard assembly for toy musical instruments, such assembly being executed in plastic and including a base with an upper section for receiving a plurality of tone bars and a lower section for receiving a like plurality of keys. Each key is removably mounted upon a discrete upstanding column on the base by a friction fit defined between the column and a pair of supports on the underside of the key; each column is formed of two resilient halves separated by a gap. Each key is an integrally formed, molded member comprised of several components with interrelated functions, such as (1) a key lever for manual depression, (2) a hammer at the end remote from the key lever, (3) a flexible segment for propelling the hammer against a tone bar in response to depression of a key lever, and (4) cooperating abutments for damping out reverberations of the hammer that might cause repeated strikings of the tone bar and/or chattering of the hammer.
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patent: 1667089 (1928-04-01), Umbriaco
patent: 2474462 (1949-06-01), Brewer
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patent: 3422720 (1969-01-01), Johnson
patent: 3583271 (1971-06-01), Corwin et al.
patent: 3736831 (1973-06-01), May et al.
Franklin Lawrence R.
Hoffman Martin P.
Proll Molding Co., Inc.
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