Electric interrupting device notably for polyphase limiting circuit breakers

Claim 1

ULTRA-RAPID TRIPPING DEVICE FOR A MULTIPOLAR SWITCH COMPRISING FOR EACH POLE MOVABLE CONTACT MEANS AND FIXED CONTACT MEANS SEPARATED BY ELECTRODYNAMIC REPULSION EFFECT OF A SHORT CIRCUIT CURRENT, CONTACT SUPPORT MEANS CARRYING SAID MOVABLE CONTACT MEANS WHICH ARE INDEPENDENTLY RELEASED IN CASE OF SHORT CIRCUIT THROUGH A RESPECTIVE POLE, SPRING MEANS ACTING ON SAID MOVABLE CONTACT SUPPORT MEANS IN A DIRECTION CORRESPONDING TO THE OPENING OF SAID CONTACTS, DEVICES FOR LOCKING THE MOVABLE CONTACT SUPPORT MEANS, ELECTROMAGNETIC TRIPPING DEVICES INDIVIDUALLY CONTROLLING THE LOCKING DEVICES OF THE RESPECTIVE MOVABLE CONTACT SUPPORT MEANS IN CASE OF SHORT CIRCUIT TO FREE SAID MOVABLE CONTACT SUPPORT MEANS WHILE THE CONTACTS ARE SEPARATED BY ELECTRODYNAMIC EFFECT, SAID CONTACT MEANS HAVING ELECTRICAL CONDUCTORS ARRANGED WITH RESPECT THERETO TO DEFINE A PARTIAL LOOP TO AID IN THE REPULSION OF THE CONTACTS BY THE ELECTRODYNAMIC EFFECT OF SAID SHORT CIRCUIT, AND MEANS MOUNTING SAID MOVABLE CONTACT MEANS AND ASSOCIATED ELECTRICAL CONDUCTOR CONNECTED THERETO TO DEFINE THE SAID PARTIAL LOOP OF A RESPECTIVE POLE IN SUCH A MANNER THAT THE NET ELECTRODYNAMIC FORCES AT ALL TIMES PRODUCE A REPULSION EFFECT ON THE MOVABLE CONTACT MEANS IRRESPECTIVE OF THE CONDITION OF THE LOCKING DEVICE AND CORRESPONDING ELECTROMAGNETIC TRIPPING DEVICE.