Circuit breaker with releasable cam type mechanism

Claim 1

AN ELECTRIC CIRCUIT BREAKER COMPRISING: (A) AN INSULATING CASING, (B) AT LEAST ONE RELATIVELY STATIONARY CONTACT SUPPORTED IN SAID INSULATING CASING, (C) AT LEAST ONE RELATIVELY MOVABLE CONTACT SUPPORTED IN SAID INSULATING CASING, (D) AN ELONGATED CONTACT ARM PIVOTALLY SUPPORTED ADJACENT ONE END IN SAID INSULATING CASING AND MOVABLE BETWEEN OPEN AND CLOSED CIRCUIT POSITIONS TO MOVE SAID RELATIVELY MOVABLE CONTACT INTO AND OUT OF ENGAGEMENT WITH SAID RELATIVELY STATIONARY CONTACT, (E) A FIRST ELONGATED CONVEX CAM SURFACE CARRIED BY SAID CONTACT ARM, (F) A RELEASABLE SUPPORT MEMBER PIVOTALLY SUPPORTED IN SAID INSULATING CASING ADJACENT THE MOVABLE END OF SAID CONTACT ARM AND HAVING A LATCH PORTION ADJACENT THE PIVOTALLY MOUNTED END OF SAID CONTACT ARM, (G) A CAM FOLLOWER MEMBER, (H) SAID RELEASABLE SUPPORT MEMBER INCLUDING A SECOND CONVEX CAM SURFACE HAVING ITS DIRECTION OF CURVATURE DIRECTED AWAY FROM SAID MOVABLE CONTACT ARM, (I) SAID FIRST AND SECOND CAM SURFACES BEING IN CONTACT WITH PORTIONS OF SAID CAM FOLLOWER MEMBER SUBSTANTIALLY OPPOSITE EACH OTHER, (J) A MANUALLY OPERABLE HANDLE MEMBER SUPPORTED FOR OSCILLATING MOVEMENT BETWEEN ON AND OFF POSITIONS IN SAID CASING AT THE SIDE OF SAID RELEASABLE SUPPORT MEMBER OPPOSITE SAID CONTACT ARM, (K) A TENSION TYPE OPERATING SPRING HAVING ONE END THEREOF CONNECTED TO SAID CAM FOLLOWER MEMBER AND HAVING THE OTHER END THEREOF CONNECTED TO SAID HANDLE MEMBER, FOR MOVING SAID CAM FOLLOWER MEMBER ALONG SAID CAM SURFACES BETWEEN ON AND OFF POSITIONS WITH A SNAP ACTION, (L) SAID CAM FOLLOWER MEMBER WHEN MOVING BETWEEN SAID ON AND OFF POSITIONS ACTING ON SAID CAM SURFACE OF SAID CONTACT ARM AND SAID CAM SURFACE OF SAID SUPPORT MEMBER TO MOVE SAID CONTACT ARM BETWEEN OPEN AND CLOSED CIRCUIT POSITIONS RESPECTIVELY WITH A SNAP ACTION, AND (M) CURRENT RESPONSIVE MEANS SUPPORTED ON SAID CASING AND RELEASABLE RESTRAINING SAID RELEASABLE SUPPORT AND RELEASING SAID RELEASABLE SUPPORT MEMBER UPON THE OCCURRENCE OF PREDETERMINED CURRENT CONDITIONS THROUGH SAID CONTACTS.