EP 0238847 B1 19930616 - OPERATING DEVICE FOR CIRCUIT-BREAKER
Title (en)
OPERATING DEVICE FOR CIRCUIT-BREAKER
Publication
Application
Priority
FR 8602409 A 19860221
Abstract (en)
[origin: US4743721A] A circuit breaker actuator device of the type comprising an operating wheel (R) whose rotation drives the moving circuit-breaking members, said wheel being connected to a first spring (S'1) by a first chain (C1) passing over a first pulley (P1) and fixed to a first point (A1) close to the periphery of the wheel. The wheel is held fixed when the spring (S1) is under tension/compression by means of a retaining member (K1) which can be retracted to allow the wheel to rotate. The device further includes a second spring (S2) connected by a second chain (C2) passing over a second pulley (P2) and fixed to a second point (A2) on said wheel. The center of the wheel is situated, when both springs are under tension/compression, between the length of the first chain connecting the first point to the first pulley and the length of the second chain connecting the second point to the second pulley, with the second spring applying a force which is less than the force applied by the first spring.
IPC 1-7
IPC 8 full level
H01H 33/40 (2006.01); H01H 3/30 (2006.01); H01H 3/36 (2006.01)
CPC (source: EP US)
H01H 3/30 (2013.01 - EP US); H01H 3/36 (2013.01 - EP US); Y10T 74/18864 (2015.01 - EP US)
Designated contracting state (EPC)
BE CH DE ES FR GB GR IT LI LU NL
DOCDB simple family (publication)
FR 2595004 A1 19870828; FR 2595004 B1 19940408; BR 8700827 A 19871222; CN 1008850 B 19900718; CN 87100771 A 19871111; DE 3786186 D1 19930722; DE 3786186 T2 19930923; DK 86687 A 19870822; DK 86687 D0 19870220; EP 0238847 A1 19870930; EP 0238847 B1 19930616; ES 2041247 T3 19931116; IE 62081 B1 19941214; IE 870444 L 19870821; JP H0433089 B2 19920602; JP S62222525 A 19870930; PT 84336 A 19870301; PT 84336 B 19890914; US 4743721 A 19880510
DOCDB simple family (application)
FR 8602409 A 19860221; BR 8700827 A 19870220; CN 87100771 A 19870221; DE 3786186 T 19870219; DK 86687 A 19870220; EP 87102331 A 19870219; ES 87102331 T 19870219; IE 44487 A 19870220; JP 3683987 A 19870219; PT 8433687 A 19870220; US 1742087 A 19870224