Keyboard instrument equipped with durable hammer stopper for sel

Details Keyboard instrument equipped with durable hammer stopper for sel Keyboard instrument equipped with durable hammer stopper for sel

1994-06-20

1996-01-16

Witkowski, Stanley J.

Music

Instruments

Electrical musical tone generation

84720, 84171, 84423R, 84DIG7, G10C 312, G10C 500, G10D 1500, G10H 134

Patent

active

054838614

ABSTRACT:
In order to allow a player to perform a music without an acoustic sound, a stopper blocks hammer shanks before impacts of hammer heads to strings, and recesses substantially conformal to the hammer shanks are formed in cushion members of the stopper for improving durability of the cushion members.

REFERENCES:
patent: 533661 (1894-02-01), McChesney et al.
patent: 537533 (1894-10-01), McChesney et al.
patent: 2250065 (1974-07-01), Koel
patent: 4633753 (1987-01-01), Takahashi
patent: 4704931 (1987-01-01), Nagai
patent: 4744281 (1987-03-01), Isozaki
patent: 4970929 (1990-11-01), Ishida
patent: 5001339 (1991-03-01), Starkey et al.
patent: 5115705 (1992-05-01), Monte et al.
patent: 5247129 (1993-09-01), Nozaki et al.

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