EP 0746842 B1 19971210 - KEYBOARD MECHANISM
Title (en)
KEYBOARD MECHANISM
Title (de)
MECHANIK FÜR EIN KLAVIER
Title (fr)
MECANIQUE DE PIANO
Publication
Application
Priority
- DE 4406296 A 19940226
- EP 9500657 W 19950223
Abstract (en)
[origin: WO9523403A1] The invention relates to a keyboard mechanism with an upper hammer (3) which is hinged so that it can pivot about a first axis and a jack (2) which can pivot about a second axis and which co-operates with the upper hammer (3). In a first embodiment, the second axis can be displaced in the direction of the upper hammer (3) by depressing the keyboard key (1) associated with the mechanism. There are repulsion means which, as the upper hammer (3) rebounds after striking the piano string (4), exert a force of repulsion between the upper hammer (3) and the jack (2). The repulsion means are formed by two permanent magnets (14, 16), one of which is arranged on the upper hammer (3) and the other on the jack (2). The magnets (14, 16) are oriented so that their like magnetic poles point toward each other. In a second embodiment, the second axis is arranged on a lever (20) which can be displaced in the direction of the upper hammer (3) by depressing the keyboard key (1) associated with the mechanism. There are repulsion means which, as the upper hammer (3) rebounds after striking the piano string (4), exert a force of repulsion between the upper hammer (3) and the lever (20). The repulsion means are formed by two permanent magnets (23, 24), one of which is arranged on the upper hammer (3) and the other on the lever (20). The magnets (23, 24) are oriented so that their like magnetic poles point toward each other.
IPC 1-7
IPC 8 full level
G10C 1/02 (2006.01); G10C 3/18 (2006.01); G10C 3/24 (2006.01)
CPC (source: EP KR)
G10C 3/24 (2013.01 - EP KR)
Designated contracting state (EPC)
AT DE FR GB IT NL
DOCDB simple family (publication)
WO 9523403 A1 19950831; AT E161114 T1 19971215; CN 1142273 A 19970205; CZ 246296 A3 19970514; DE 4406296 A1 19950831; DE 59501103 D1 19980122; EP 0746842 A1 19961211; EP 0746842 B1 19971210; JP H10500779 A 19980120; KR 970700900 A 19970212; PL 315843 A1 19961209
DOCDB simple family (application)
EP 9500657 W 19950223; AT 95911256 T 19950223; CN 95191799 A 19950223; CZ 246296 A 19950223; DE 4406296 A 19940226; DE 59501103 T 19950223; EP 95911256 A 19950223; JP 52212895 A 19950223; KR 19960704183 A 19960801; PL 31584395 A 19950223