Circuit breaker rotary handle mechanism cam lock

Claim 1

AN ELECTRIC CIRCUIT BREAKER COMPRISING: (A) A SUPPORT; (B) AT LEAST ONE STATIONARY CONTACT SUPPORTED ON SAID SUPPORT; (C) AT LEAST ONE MOVABLE CONTACT; (D) MEANS MOVABLY SUPPORTING SAID MOVABLE CONTACT ON SAID SUPPORT FOR MOVEMENT BETWEEN A CLOSED CIRCUIT POSITION IN WHICH IT IS IN ENGAGEMENT WITH SAID STATIONARY CONTACT AND AN OPEN CIRCUIT POSITION IN WHICH IT IS OUT OF ENGAGEMENT WITH SAID STATIONARY CONTACT; (E) OPERATING MEANS FOR OPERATING SAID MOVABLE CONTACT BETWEEN SAID OPEN AND CLOSED CIRCUIT POSITIONS, SAID OPERATING MEANS COMPRISING A CONTACT OPERATING MEMBER AND MEANS CONNECTING SAID CONTACT OPERATING MEMBER TO SAID MOVABLE CONTACT; (F) BIASING MEANS BIASING SAID CONTACT OPERATING MEMBER IN CONTACT CLOSING DIRECTION; (G) A CAM MEMBER HAVING A CAM SURFACE; (H) MEANS MOVABLY SUPPORTING SAID CAM MEMBER FOR MOVEMENT ALONG A PREDETERMINED PATH; (I) A CAM FOLLOWER MEMBER SUPPORTED ON SAID SUPPORT AND CONNECTED TO SAID CONTACT OPERATING MEMBER; (J) SAID CAM SURFACE ENGAGING SAID CAM FOLLOWER MEMBER AS SAID CAM MEMBER IS MOVED ALONG SAID PREDETERMINED PATH AND MOVING SAID CAM FOLLOWER MEMBER IN A DIRECTION TO MOVE SAID CONTACT OPERATING MEMBER AWAY FROM SAID CLOSED CIRCUIT POSITION AGAINST THE BIAS OF SAID BIASING MEANS AND SUDDENLY PERMITTING MOVEMENT OF SAID CAM FOLLOWER MEMBER IN A DIRECTION TO PERMIT MOVEMENT OF SAID CONTACT OPERATING MEMBER TOWARD SAID CLOSED CIRCUIT POSITION; (K) CAM OPERATING MEANS SUPPORTED ON SAID SUPPORT FOR MOVING SAID CAM MEMBER ALONG SAID PREDETERMINED PATH; (L) ONE-WAY DRIVE MEANS CONNECTING SAID CAM OPERATING MEANS TO SAID CAM MEMBER TO DRIVE SAID CAM MEMBER IN CONTACT-CLOSING DIRECTION; AND (M) LOCKING MEANS CARRIED BY ONE OF SAID CAM MEMBER AND SAID CAM OPERATING MEANS AND PREVENTING RELATIVE MOVEMENT BETWEEN SAID CAM MEMBER AND SAID CAM OPERATING MEANS DURING THE FINAL PORTION ONLY OF SAID MOVEMENT OF SAID CAM MEMBER IMMEDIATELY PRIOR TO AND DURING SAID SUDDEN RELEASE OF SAID CAM FOLLOWER MEMBER AND PREVENTING ACCELERATION OF MOVEMENT OF SAID CAM MEMBER IN SAID CONTACT CLOSING DIRECTION BY ACTION OF SAID CAM FOLLOWER MEMBER THEREON.