Grand piano action mechanism

Details Grand piano action mechanism Grand piano action mechanism

2005-04-28

2008-03-11

Donovan, Lincoln (Department: 2837)

Music

Instruments

Stringed

C084S216000, C084S069000

Reexamination Certificate

active

07342159

ABSTRACT:
An action mechanism of a mechanical piano including a wippen accommodated on a wippen rail, a repetition lever with a flange, a jack, a hammer, and a pair of permanent magnets arranged so as to repel each other. The first magnet is attached to the wippen and the second magnet is attached to immovable structure of the piano.

REFERENCES:
patent: 2976756 (1961-03-01), Schwarzbaur
patent: 4957029 (1990-09-01), Kahonen
patent: 5796024 (1998-08-01), Stanwood et al.
patent: 6730839 (2004-05-01), Itou
patent: 1691132 (2005-11-01), None
patent: 2331831 (1999-02-01), None
patent: 10055171 (1998-02-01), None
patent: 1022822 (2004-09-01), None
patent: 00/54248 (2000-09-01), None
Patent Abstracts of Japan vol. 2003, No. 9, Sep. 3, 2003 & JP 2003 10640 A (Kawai Musical Instr Mgf Co Ltd), May 16, 2003.
International Search Report and Written Opinion issued in corresponding PCT/CZ2005/000036.

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