Piano key leveling

Details Piano key leveling Piano key leveling

1995-09-19

1997-08-05

Spyrou, Cassandra C.

Music

Instruments

General features

84435, G10C 312

Patent

active

056545150

ABSTRACT:
A piano includes a balance rail defining a balance surface, and a piano key assembly including an elongated body defining a playing surface. The piano key assembly is supported by the balance surface for pivoting movement in response to application of playing pressure applied to the playing surface. The balance surface is disposed in a first plane and the playing surface is disposed in a second plane vertically spaced from the first plane. A leveling arm has a first end attached to the elongated body and a cantilevered, second, free end, and defines a leveling surface in opposition to the balance surface. A leveling adjustment element includes a segment extending between the elongated body and the free end of the leveling arm. The segment has a length adjustable for changing the vertical distance between the first plane of the balance surface and the second plane of the playing surface.

REFERENCES:
patent: 509915 (1893-12-01), Lehr et al.
patent: 2482619 (1949-09-01), Howe

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