Keyboard musical instrument equipped with hammer shank stopper w

Details Keyboard musical instrument equipped with hammer shank stopper w Keyboard musical instrument equipped with hammer shank stopper w

1995-08-25

1997-04-01

Witkowski, Stanley J.

Music

Instruments

Electrical musical tone generation

84720, 84 2, 84 3, 84171, G10D 1500, G10F 122, G10H 134

Patent

active

056168802

ABSTRACT:
An acoustic upright piano, an electronic sound system and a hammer stopper form in combination a keyboard musical instrument for generating acoustic sounds in an acoustic sound mode and electronic sounds in an electronic sound mode, and the hammer stopper has a rotatable shaft extending in a lower space under damper blocks of damper assemblies, cushion members projecting into an upper space over the damper blocks and connecting brackets provided between the rotatable shaft and the cushion members, thereby perfectly interrupting hammer motions before an impact on strings in the electronic sound mode.

REFERENCES:
patent: 2250065 (1941-07-01), Koehl
patent: 5374775 (1994-12-01), Kawamura et al.

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