EP 0259060 A2 19880309 - Action for upright piano.
Title (en)
Action for upright piano.
Title (de)
Klaviermechanik.
Title (fr)
Mécanique pour piano droit.
Publication
Application
Priority
CA 517503 A 19860904
Abstract (en)
An action for an upright piano which emulates or simulates the action of a grand piano is provided. In the action, a back check lever (3) is positioned above the back of the key, and a grand piano whippen is positioned above the back check lever (3). The grand whippen acts on a knuckle (20) provided on a catcher arm (23) integrally connected with the hammer shank (24) at a substantial angle. Depression of the key produces upward movement of the back (1) of the key, the back check lever (3), and the grand whippen, in turn producing rotation of the catcher arm (23) which drives the hammer (27) towards the string (30). The catcher arm (23) has a catcher (45) at its forward end and the back check lever (3) has a back check (46) for catching the catcher after the hammer has rebounded from the string. A damping action is mounted independently from the hammer action.
IPC 1-7
IPC 8 full level
G10C 3/16 (2006.01)
CPC (source: EP KR US)
G10C 1/02 (2013.01 - KR); G10C 3/161 (2013.01 - EP US); G10C 3/166 (2013.01 - EP US); G10C 3/18 (2013.01 - EP); G10C 3/24 (2013.01 - EP US); G10C 3/26 (2013.01 - EP US)
Designated contracting state (EPC)
AT DE FR GB IT
DOCDB simple family (publication)
CA 1224950 A 19870804; EP 0259060 A2 19880309; EP 0259060 A3 19890712; JP S6388599 A 19880419; KR 880004419 A 19880603
DOCDB simple family (application)
CA 517503 A 19860904; EP 87307330 A 19870819; JP 21931287 A 19870903; KR 870009745 A 19870903