Keyboard musical instrument having fall-board assembled with cas

Details Keyboard musical instrument having fall-board assembled with cas Keyboard musical instrument having fall-board assembled with cas

1998-08-04

1999-08-24

Witkowski, Stanley J.

Music

Instruments

Stringed

G10C 302

Patent

active

059427027

ABSTRACT:
An upright piano includes a fall-board hinged to a upper sill and connected through a pair of flexible coupling to side arms, and each of the flexible couplings has a rotary damper embedded in the side arm and an Oldham's coupling connected between the fall-board and the rotary damper so that the Oldham's couplings take up misalignment between the rotational axis of the fall-board and the rotational axes of the rotary dampers.

REFERENCES:
patent: 5635655 (1997-06-01), Yamashita

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