Movable pivot bearing for changing key leverage in string...

Details Movable pivot bearing for changing key leverage in string... Movable pivot bearing for changing key leverage in string...

2011-03-29

2011-03-29

Lockett, Kimberly R (Department: 2832)

Music

Instruments

General features

Reexamination Certificate

active

07915509

ABSTRACT:
A moveable key lever pivot bearing system for keyboard instruments in which the pivot bearing is provided with a longitudinal slot to enable mounting the bearing over a pivot pin disposed on a balance rail mounted within the case of the instrument. The key lever, pivot pin, and balance rail all remain in fixed relationship to one another resulting in a fulcrum point change when the bearing is longitudinally shifted back and forth with respect to the pianist. Means are provided to fix the bearing at a selected longitudinal position, extension arms for example, which may be manipulated to adjust the position of the bearings.

REFERENCES:
patent: 2006/0272469 (2006-12-01), Meisel

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