Keyboard apparatus

Details Keyboard apparatus Keyboard apparatus

2008-04-29

2008-04-29

Lockett, Kimberly (Department: 2837)

Music

Instruments

General features

Reexamination Certificate

active

11489990

ABSTRACT:
A keyboard apparatus is including a plurality of keys and a plurality of mass members provided under the respective keys to be pivotably supported on a keyboard frame being a support member, each of the mass members extends along a longitudinal direction of the key and has a mass concentration part in its rear end portion, and when not driven by a mass driving part of the key, each of the mass members is in an inclined state with the mass concentration part being at the lowest descended position. The keyboard frame has a rib provided between two adjacent mass members among the plural mass members, and at least part of a lower edge of the rib is formed along lower edges of the mass members in the inclined state.

REFERENCES:
patent: 4476769 (1984-10-01), Kumano
patent: 5834668 (1998-11-01), Kumano et al.

Affiliated with

Also associated with

Rating

Keyboard apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Keyboard apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Keyboard apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3922693