Rotary handle operator for circuit breaker with improved blocking position and latching cover structure

Claim 1

IN COMBINATION, AN ENCLOSURE HAVING A FIRST SIDE NORMALLY CLOSED BY AN OPENABLE FRONT COVER, A CIRCUIT INTERRUPTER WITHIN SAID ENCLOSURE AND HAVING A HANDLE DISPOSED ENTIRELY WITHIN SAID ENCLOSURE; A MECHANISM SEPARATE FROM SAID COVER AND CONNECTED TO SAID HANDLE FOR MANUALLY OPERATING SAID CIRCUIT INTERRUPTER FROM A POINT OUTSIDE OF SAID ENCLOSURE AND IN FRONT OF SAID COVER; SAID MECHANISM INCLUDING AN OPERATING HANDLE, MEANS ROTATABLY MOUNTING SAID OPERATING HANDLE FOR MOVEMENT IN A PLANE GENERALLY PARALLEL TO SAID COVER IN ITS CLOSED POSITION; SAID COVER HAVING AN APERTURE TO RECEIVE SAID HANDLE AS SAID COVER MOVES FROM ITS OPEN TO ITS SAID CLOSED POSITION, A FIRST ELEMENT BIASED TO COVER LATCHING POSITION FOR MAINTAINING SAID COVER CLOSED, A SECOND ELEMENT BIASED TO BLOCKING POSITION, CAM MEANS OPERABLE BY SAID HANDLE TO MOVE SAID FIRST ELEMENT TO COVER RELEASING POSITION, SAID CAM MEANS AND SAID SECOND ELEMENT IN SAID BLOCKING POSITION COOPERATING TO PREVENT OPERATION OF SAID OPERATING HANDLE TO CLOSE SAID CIRCUIT INTERRUPTER WHEN FRONT COVER IS OPEN; DEPRESSIBLE MEANS OPERABLE BY SAID COVER UPON CLOSING THEREOF TO MOVE SAID SECOND ELEMENT FROM SAID BLOCKING POSITION TO A RETRACTED POSITION WHEREIN SAID OPERATING HANDLE MAY BE OPERATED TO CLOSE SAID CIRCUIT INTERRUPTER.