EP 0024619 B1 19831012 - DAMPING DEVICE FOR THE ELECTROMAGNETIC PRINT HAMMER DRIVE IN A PRINT-HAMMER ARRANGEMENT
Title (en)
DAMPING DEVICE FOR THE ELECTROMAGNETIC PRINT HAMMER DRIVE IN A PRINT-HAMMER ARRANGEMENT
Publication
Application
Priority
DE 2933616 A 19790820
Abstract (en)
[origin: US4329921A] A damping device for a printing hammer which is driven by an electromagnetically actuated pivotable armature has a circuit associated therewith for operating the electromagnetic coils which generates a high excitation current for rapid acceleration of the armature and printing hammer which is followed by a switch over to a considerably lower holding current which maintains the armature in a position to abut the printing hammer during its return stroke. The armature also actuates a rotatable angle lever into engagement with the printing hammer for frictional braking thereof so that the hammer is rapidly damped to a rest position and is ready for a subsequent printing stroke.
IPC 1-7
IPC 8 full level
B41J 2/275 (2006.01); B41J 9/38 (2006.01); B41J 9/42 (2006.01); B41J 9/44 (2006.01); H04L 13/06 (2006.01)
CPC (source: EP US)
B41J 9/42 (2013.01 - EP US)
Designated contracting state (EPC)
BE CH FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0024619 A1 19810311; EP 0024619 B1 19831012; AR 228855 A1 19830429; AU 520974 B2 19820311; AU 6155480 A 19810409; BR 8005274 A 19810304; CS 225141 B2 19840213; DE 2933616 A1 19810326; DE 2933616 C2 19820923; DK 356780 A 19810221; JP S5630879 A 19810328; JP S6026716 B2 19850625; MX 147871 A 19830125; SU 919612 A3 19820407; US 4329921 A 19820518; ZA 805075 B 19810826
DOCDB simple family (application)
EP 80104739 A 19800811; AR 28211280 A 19800811; AU 6155480 A 19800819; BR 8005274 A 19800820; CS 568280 A 19800819; DE 2933616 A 19790820; DK 356780 A 19800819; JP 11462580 A 19800820; MX 18356480 A 19800815; SU 2874103 A 19800123; US 15374280 A 19800527; ZA 805075 A 19800819