EP 0300270 B1 19930120 - LATCH ARRANGEMENT FOR A HIGH-SPEED CIRCUIT BREAKER
Title (en)
LATCH ARRANGEMENT FOR A HIGH-SPEED CIRCUIT BREAKER
Publication
Application
Priority
CH 277687 A 19870722
Abstract (en)
[origin: JPS6441125A] PURPOSE: To speed up the breaking speed of a contact bridge by forming a connecting ring so as to compensate the friction force of a contact bridge to effect a roller in the condition that the contact bridge is closed. CONSTITUTION: A front surface part of a locking bar 15 formed as a connecting ring 16 is partially formed into the outline of a roller 14, and a part of the connecting ring 16 started from a point A, of which shape is followed to the outline of the roller, is moved so as to have a cross section extended in the tangent direction in relation to the roller 14, and the cross section of the connecting ring 16 extended in the tangent direction in relation to the roller 14 is inclined at 90 deg.-α in relation to the closing direction, and the angle αis determined as an angle formed by a connecting line 29 for connecting the point A to an intermediate point Z of an axis 13 and the closing direction. With this structure, the connecting ring 16 works so as to compensate the friction force for driving the roller 14 in the condition that a contact bridge 4 is closed, and accelerates the movement of the locking bar.
IPC 1-7
IPC 8 full level
H01H 5/08 (2006.01); H01H 3/42 (2006.01); H01H 3/46 (2006.01); H01H 9/20 (2006.01); H01H 33/42 (2006.01); H01H 71/10 (2006.01); H01H 71/50 (2006.01)
CPC (source: EP KR US)
H01H 9/00 (2013.01 - KR); H01H 71/10 (2013.01 - KR); H01H 71/505 (2013.01 - EP US); H01H 2071/506 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0300270 A1 19890125; EP 0300270 B1 19930120; AT E84913 T1 19930215; BR 8803654 A 19890214; CA 1330224 C 19940614; CH 673175 A5 19900215; CN 1010903 B 19901219; CN 1031445 A 19890301; CZ 279701 B6 19950614; CZ 521188 A3 19950118; DE 3877645 D1 19930304; ES 2038246 T3 19930716; FI 883462 A0 19880721; FI 883462 A 19890123; FI 88552 B 19930215; FI 88552 C 19930525; JP 2547242 B2 19961023; JP S6441125 A 19890213; KR 890002926 A 19890411; KR 970004395 B1 19970327; PL 158664 B1 19920930; PL 273856 A1 19890220; SK 278090 B6 19951206; SK 521188 A3 19951206; SU 1748663 A3 19920715; UA 18262 A 19971225; US 4877928 A 19891031
DOCDB simple family (application)
EP 88110748 A 19880706; AT 88110748 T 19880706; BR 8803654 A 19880721; CA 572624 A 19880721; CH 277687 A 19870722; CN 88106122 A 19880722; CS 521188 A 19880720; DE 3877645 T 19880706; ES 88110748 T 19880706; FI 883462 A 19880721; JP 17828888 A 19880719; KR 880009244 A 19880722; PL 27385688 A 19880721; SK 521188 A 19880720; SU 4356175 A 19880721; UA 4356175 A 19880721; US 22263988 A 19880721