Automatic circuit interrupter having magnetic blowoff means

Claim 1

A CIRCUIT INTERRUPTER COMPRISING A MOVABLE CONTACT ARM, A SUPPORT MEMBER ON WHICH SAID MOVABLE CONTACT ARM IS PIVOTABLY SUPPORTED, A STATIONARY CONTACT ARM, SAID CONTACT ARMS BEING PARTLY DISPOSED IN SUBSTANTIALLY PARALLEL RELATIONSHIP, EACH OF SAID CONTACT ARMS HAVING AT THE FREE END THEREOF A CONTACT, OPERATING MEANS INCLUDING RESILIENT MEANS OPERATIVELY CONNECTED TO SAID MOVABLE CONTACT ARM TO EFFECT OPENING AND CLOSING OF SAID CONTACTS, MOTIVE MEANS RESPONSIVE TO OVERLOAD CURRENT FLOW AND SPACED FROM SAID CONTACT ARMS, TRIPPING MEANS COUPLED TO AND CONTROLLED BY SAID MOTIVE MEANS AND INCLUDING A MOVABLE MEMBER ENGAGING ONE END OF SAID RESILIENT MEANS, SAID INTERRUPTER HAVING A LONGITUDINALLY ELONGATED GROOVE WITHIN WHICH SAID MOVABLE MEMBER MOVES TO MOVE THE ONE END OF THE RESILIENT MEANS TO PERFORM A TRIPPING OPERATION, THE SAID MOVABLE CONTACT ARM BEING ROTATABLE TO SEPARATE SAID CONTACTS FROM EACH OTHER INDEPENDENT OF THE OPERATION OF SAID OPERATION MEANS AND SAID TRIPPING MECHANISM UNDER THE FORCE OF AN ELECTROMAGNETIC REPULSION DUE TO A FLOW OF EXCESSIVE CURRENT THROUGH BOTH CONTACT ARMS TO PRODUCE AN INTERRUPTION OF THE ASSOCIATED CIRCUIT.