Key guide structure in keyboard apparatus

Details Key guide structure in keyboard apparatus Key guide structure in keyboard apparatus

2007-03-23

2009-02-10

Lockett, Kimberly R (Department: 2837)

Music

Instruments

General features

Reexamination Certificate

active

07488885

ABSTRACT:
Keyboard apparatus has a frame and a key pivotably mounted on the frame. Key guide structure includes a key-side guide member provided inside the key, and a frame-side guide member provided on the frame. The key-side guide member has at least one convexly-formed portion projecting from the inner surface of a distal end portion of the key, remote from a pivot point of the key, toward the pivot point. The frame-side guide member permits movement of the key-side guide member along a pivoting direction of the key, but limits lateral movement of the key-side guide member.

REFERENCES:
patent: 4375179 (1983-03-01), Schwartz et al.
patent: 5495074 (1996-02-01), Kondo et al.
patent: 5824928 (1998-10-01), Kumano et al.
patent: 52-154230 (1977-11-01), None
patent: 3-105894 (1991-11-01), None
patent: 4-289895 (1992-10-01), None
patent: 9-244656 (1997-09-01), None

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