String-striking device for piano

Details String-striking device for piano String-striking device for piano

2007-03-20

2007-03-20

Lockett, Kimberly (Department: 2837)

Music

Instruments

Automatic

Reexamination Certificate

active

10566024

ABSTRACT:
A keystroke device of a piano capable of increasing an area for the adjustment of static loads applied to the tips of keys on the playing sides, wherein a first weight lever (31) rotating according to the movement of the keys (21) is installed above the keys (21) and near an action part (25) and a second weight lever (41) rotating according to the movement of the first weight lever (31) is installed above the first weight lever. Since the second weight lever (41) can be separated from the action part (25), the degree of freedom of the shape and installation of the second weight lever (41) can be increased. Accordingly, the area for the adjustment of the static loads applied to the tips of the keys (21) on the playing sides can also be increased.

REFERENCES:
patent: 4667563 (1987-05-01), Wakuda et al.
patent: 2001-159894 (2001-06-01), None
patent: 2002-162970 (2002-06-01), None
patent: 2003-216143 (2003-07-01), None
Kawai News Release ‘Upright Piano “Varitouch” Hatsubai ni tsuite’, [online], Heisei 15 nen 5 Gatsu 28 Nichi, [retrieval date Aug. 03, 2004], internet<URL:http://www.kawai.co.jp/press/release20030528.html>.

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