Apparatus for opening and closing the cover for a keyboard of a

Details Apparatus for opening and closing the cover for a keyboard of a Apparatus for opening and closing the cover for a keyboard of a

1990-05-29

1991-12-31

Brown, Brian W.

Music

Instruments

Stringed

G10C 302

Patent

active

050761293

ABSTRACT:
An apparatus for opening and closing the cover for a keyboard of a musical instrument including a rack and pinion mechanism to provide smooth sliding of the cover member. A rack and a pinion guide groove are integrally formed on each side of the musical instrument. A rotatable shaft includes at each end a pinion which engages with the rack. The pinion members are slidingly engaged on the shaft so that the guide members at each end of the shaft may be easily inserted into the guide grooves provided on the sides of the mechanism.

REFERENCES:
patent: 788044 (1905-04-01), Haddorff
patent: 4656913 (1987-04-01), Yoshikawa
patent: 4742799 (1988-05-01), Kira et al.

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