EP 0362761 A3 19911121 - ELECTROMECHANICAL, INTERMITTENT OPERATION DEVICE, PARTICULARLY FOR PHOTOGRAPHIC CUTTERS
Title (en)
ELECTROMECHANICAL, INTERMITTENT OPERATION DEVICE, PARTICULARLY FOR PHOTOGRAPHIC CUTTERS
Publication
Application
Priority
IT 8413888 A 19881005
Abstract (en)
[origin: EP0362761A2] An electromechanical intermittent operation device, particularly for photographic cutters, characterised by comprising: - a direct current motor (17), the shaft (16) of which is directly coupled to a cam (15) for controlling the member (6) which is to be intermittently operated, - a member (6) to be intermittently operated, provided with elastic means (11) which, in the absence of other external forces, maintain it in its waiting condition, - means (22) for cyclically feeding the electric motor with an overcurrent for a time sufficient to cause it to pass beyond the half way stage in the operating cycle, and then interrupting the electrical feed, - means (22) for short-circuiting the rotor winding on interruption of the electrical feed, and - means (22) for feeding the rotor winding with a countercurrent pulse of such a duration as to halt the motor (17) without oscillation exactly in its waiting position.
IPC 1-7
IPC 8 full level
G03D 15/04 (2006.01)
CPC (source: EP)
G03D 15/046 (2013.01)
Citation (search report)
- [A] DE 3304649 A1 19830825 - FUJI PHOTO FILM CO LTD [JP]
- [A] DE 8703368 U1 19870430
- [A] US 4354147 A 19821012 - KLAUSSNER HANS-JUERGEN [CH]
- [A] DE 2652521 A1 19780524 - KALTENBACH & VOIGT
- [A] ELECTRONICS INTERNATIONAL, vol. 50, no. 5, March 1977, page 105, NY, US; B. POSTLEWAIT: "Inductive kick gates SCR motor crowbar"
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0362761 A2 19900411; EP 0362761 A3 19911121; IT 1226000 B 19901210; IT 8884138 A0 19881005
DOCDB simple family (application)
EP 89118221 A 19891002; IT 8413888 A 19881005