Two-part mechanical interlock for electromagnetic contactors

Claim 1

FOR USE BETWEEN A PAIR OF SPACED SIDE-BY-SIDE CORRESPONDINGLY POSITIONED MOVABLE CONTACT CARRIERS EACH MOUNTED FOR RECIPROCAL MOVEMENT BETWEEN FIRST AND SECOND PREDETERMINED POSITIONS AND HAVING A CAMMING AND LOCKING LUG MOVABLE INTEGRALLY THEREWITH AND DISPOSED ON THE SIDE THEREOF ADJACENT THE OTHER MOVABLE CONTACT CARRIER, SAID LUGS BEING OFFSET FROM EACH OTHER IN A DIRECTION PERPENDICULAR TO THE PATHS OF RECIPROCAL MOVEMENT OF SAID MOVABLE CONTACT CARRIERS, A MECHANICAL INTERLOCK FOR PREVENTING MOVEMENT OF EITHER ONE OF SAID MOVABLE CONTACT CARRIERS TO SAID FIRST PREDETERMINED POSITION THEREOF WHILE THE OTHER OF SAID MOVABLE CONTACT CARRIERS IS IN SAID FIRST PREDETERMINED POSITION THEREOF, SAID INTERLOCK COMPRISING A FRAME MEMBER MOUNTABLE BETWEEN SAID MOVABLE CONTACT CARRIERS, AND A LOCKING MEMBERS MOUNTABLE IN SAID FRAME MEMBER FOR LIMITED PIVOTAL MOVEMENT WITH RESPECT THERETO, SAID LOCKING MEMBER HAVING A PAIR OF AXIALLY ALIGNED PROJECTIONS RESPECTIVELY DISPOSED ON OPPOSITE SIDES THEREOF, SAID PROJECTIONS BEING SPACED FROM AND EXTENDING AXIALLY IN OPPOSITE DIRECTIONS PARALLEL TO THE AXIS OF PIVOTAL MOVEMENT OF SAID LOCKING MEMBER INTO INTERLOCKING RELATIONSHIP RESPECTIVELY WITH SAID LUGS WHEN SAID LOCKING MEMBER IS MOUNTED IN SAID FRAME MEMBER AND SAID FRAME MEMBER IS MOUNTED BETWEEN SAID MOVABLE CONTACT CARRIERS.