Key support device

Details Key support device Key support device

1995-10-16

1999-09-28

Spyrou, Cassandra C.

Music

Instruments

General features

84435, G10C 312

Patent

active

059592281

ABSTRACT:
There is disclosed a key support device for a keyboard musical instrument including a plurality of keys and a keyboard chassis. The key support device has a support member for rotatably supporting a rear part of each of the plurality of keys on the keyboard chassis. The keys each have a supporting shaft-receiving recess having an arcuately-walled portion defined by an inner peripheral surface which is arcuate and partially open in cross-section. The support member comprises a supporting shaft part having an arcuate portion which has the same radius of curvature as the arcuately-walled portion of the supporting shaft-receiving recess and a central angle of less than 180 degrees, and a support part extending from the supporting shaft part. By this arrangement, the keys are each supported by the support member in a state of the arcuately-walled portion of the supporting shaft-receiving recess and the arcuate portion of the supporting shaft part being in contact with each other.

REFERENCES:
patent: 3413885 (1968-12-01), Lely
patent: 4723471 (1988-02-01), Sugimoto

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