Music – Instruments – Stringed
Patent
1988-05-05
1989-04-04
Hix, L. T.
Music
Instruments
Stringed
G10C 302
Patent
active
048174874
ABSTRACT:
For preventing a fall board of a keyboard instrument from crashing against a key slip of the keyboard instrument, there is disclosed a fall board assembly comprising (a) a fall board having a boss portion and a covering plate portion extending from the boss portion and (b) a pair of rotary dampers provided between the boss portion of the fall board and side arms of the keyboard instrument, respectively, and operative to allow the fall board to move between first and second angular positions, and the keyboard is covered with the covering plate portion of the fall board in the first angular position but exposed to a player in the second angular position, wherein the rotary dampers produce a damping effect against the rotation of the fall board when the fall board rotates from the second angular position to the first angular position.
REFERENCES:
patent: 503822 (1893-08-01), Yuel
Brown Brian W.
Hix L. T,.
Yamaha Corporation
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