Draw-out switch-gear interlock apparatus

Claim 1

DRAWOUT ELECTRICAL SWITCHGEAR APPARATUS COMPRISING: (A) MAIN SUPPORT; (B) A SECONDARY SUPPORT; (C) SAID MAIN SUPPORT AND SAID SECONDARY SUPPORT INCLUDING COOPERATING MEANS SLIDABLY SUPPORTING SAID SECONDARY SUPPORT FOR RECIPROCAL MOVEMENT ON SAID MAIN SUPPORT IN A PREDETERMINED DIRECTION; (D) AN ELECTRICAL CONTROL DEVICE MOUNTED ON SAID SECONDARY SUPPORT FOR MOVEMENT THEREWITHIN BETWEEN INSERTED AND RETRACTED POSITIONS, SAID CONTROL DEVICE INCLUDING AT LEAST ONE CONTACT MEMBER AND A MANUALLY OPERABLE HANDLE MOVABLE BETWEEN OPEN AND CLOSED CIRCUIT POSITIONS AND MEANS CONNECTING SAID HANDLE TO SAID MOVABLE CONTACT TO MOVE SAID CONTACT TO OPEN AND CLOSED CIRCUIT POSITIONS UPON MOVEMENT OF SAID HANDLE TO SAID OPEN AND CLOSED CIRCUIT POSITIONS RESPECTIVELY; (E) INTERLOCK MEANS PREVENTING MOVEMENT OF SAID SECONDARY SUPPORT SO AS TO MOVE SAID ELECTRICAL CONTROL DEVICE FROM SAID INSERTED TOWARD SAID RETRACTED POSITION WHILE SAID MOVABLE CONTACT MEMBER IS IN SAID CLOSED CIRCUIT POSITION; (F) SAID INTERLOCK MEANS COMPRISING AN ELONGATED ROD CARRIED BY SAID SECONDARY SUPPORT MEMBER, SAID ROD EXTENDING SUBSTANTIALLY IN SAID PREDETERMINED DIRECTION; (G) MANUALLY OPERABLE HANDLE MEANS CONNECTED TO SAID ROD FOR ROTATING SAID ROD BETWEEN AN INTERLOCKING POSITION AND A RELEASING POSITION; (H) A FIRST EXTENSION EXTENDING FROM SAID ROD AND EXTENDING INTO AN APERTURE IN SAID MAIN SUPPORT WHEN SAID SECONDARY SUPPORT IS IN A POSITION CORRESPONDING TO SAID INSERTED POSITION OF SAID CONTROL DEVICE; (I) A SECOND EXTENSION ON SAID ROD; (J) A BLOCKING MEMBER MOVABLY CARRIED BY SAID CONTROL DEVICE AND MEANS INTERCONNECTING SAID MOVABLE CONTACT MEMBER AND SAID BLOCKING MEMBER AND MOVING SAID BLOCKNG MEMBER TO A BLOCKING POSITION WHEN SAID CONTACT MEMBER IS IN SAID CLOSED CIRCUIT POSITION AND MOVING SAID BLOCKING MEMBER TO A NON-BLOCKING POSITION WHEN SAID MOVABLE CONTACT IS IN SAID OPEN CIRCUIT POSITION, (K) SAID BLOCKING MEMBER WHEN IN SAID BLOCKING POSITION OBSTRUCTING MOVEMENT OF SAID SECOND EXTENSION OF SAID ROD TO THEREBY OBSTRUCT MOVEMENT OF SAID ROD SUCH AS TO MOVE SAID FIRST EXTENSION OUT OF SAID APERTURE WHEN SAID CIRCUIT CONTROL DEVICE IS IN SAID INSERTED POSITION; (L) MEANS ENGAGING SAID INTERLOCK MEANS AND RETAINING SAID ELONGATED ROD OF SAID INTERLOCK MEANS IN SAID RELEASING POSITION WHILE SAID CIRCUIT BREAKER IS IN A POSITION OTHER THAN SAID INSERTED POSITION; (M) SAID SECOND EXTENSION BEING POSITIONED IN THE PATH OF MOVEMENT OF SAID BLOCKING MEMBER WHILE SAID INTERLOCKING ROD IS IN SAID RELEASING POSITION; (N) SAID BLOCKING MEMBER ENGAGING SAID SECOND EXTENSION AND PREVENTING MOVEMENT OF SAID MOVABLE CONTACT MEMBER TO SAID CLOSED CIRCUIT POSITION WHILE SAID INTERLOCKING ROD IS IN SAID RELEASING POSITION.