Multi-pole protective relay

Claim 1

IN A RELAY THE COMBINATION COMPRISING: A SUPPORTING STRUCTURE; A TRIP MEMBER MOUNTED BY SAID STRUCTURE MOVABLE BETWEEN COCKED AND TRIPPED POSITIONS; AN ACTUATOR MOUNTED BY SAID STRUCTURE MOVABLE BETWEEN RETRACTED AND ACTUATING POSITIONS WITH A PART IN THE PATH OF MOVEMENT OF SAID TRIP MEMBER THAT IS ENGAGEABLE BY THE TRIP MEMBER TO BE CARRIED THEREWITH AS THE TRIP MEMBER MOVES TOWARD TRIPPED POSITION, THE ACTUATOR THEREBY BEING CARRIED TO ACTUATING POSITION; SPRING MEANS BIASING SAID TRIP MEMBER TO COCKED POSITION AND SAID ACTUATOR TO RETRACTED POSITION; A PLURALITY OF TRIPPING DEVICES EACH OF WHICH IS MOVABLE INDEPENDENT OF THE OTHERS BETWEEN LATCHED AND OPERATING POSITIONS; MEANS MOUNTING SAID TRIPPING DEVICES ON SAID SUPPORTING STRUCTURE; A STRIKING PORTION FORMING A PART OF EACH TRIPPING DEVICE THAT IS ENGAGEABLE WITH THE TRIP MEMBER TO CARRY THE TRIP MEMBER TOWARD TRIPPED POSITION UPON MOVEMENT TOWARD OPERATING POSITION AND THEN TO BE CARRIED BY THE TRIP MEMBER TOWARD LATCHED POSITION UPON MOVEMENT OF THE TRIP MEMBER TOWARD COCKED POSITION, EACH STRIKING PORTION BEING INDEPENDENT OF SAID TRIP MEMBER TO REAMIN IN ITS LATCHED POSITION WHEN ANOTHER OF SAID TRIPPING DEVICES MOVES TO ITS RESPECTIVE OPERATING POSITION; BIAS MEANS URGING EACH TRIPPING DEVICE TOWARD ITS OPERATING POSITION; AND RELEASABLE RESTRAINING MEANS FOR HOLDING EACH TRIPPING DEVICE IN ITS LATCHED POSITION.