Upright piano and action unit incorporated therein

Details Upright piano and action unit incorporated therein Upright piano and action unit incorporated therein

2011-07-26

2011-07-26

Lockett, Kimberly R (Department: 2832)

Music

Instruments

Stringed

Reexamination Certificate

active

07985907

ABSTRACT:
An upright piano includes action units between keys and hammers, and the action units are less prompt so that a missing tone tends to take place in a music passage through high-speed repetition; the action unit is constructed from a whippen assembly, a jack mechanism provided on the whippen assembly and a regulating button mechanism for an escape in cooperation with the jack mechanism, and a compression coil spring is provided between a center rail and the whippen assembly for urging the whippen assembly in a direction toward the original position, thereby accelerating the restoration of jack to the contact with the hammer.

REFERENCES:
patent: 6232537 (2001-05-01), Kimble
patent: 6965070 (2005-11-01), Wenjun
patent: 2003-280657 (2003-10-01), None

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