Circuit interrupters

Claim 1

A CIRCUIT BREAKER HAVING A PIVOTED CONTACT ARM, A COMPANION CONTACT ENGAGEABLE BY SAID PIVOTED CONTACT ARM IN THE CLOSED CONDITION OF THE CIRCUIT BREAKER, A DRIVING LINK HAVING ONE END PIVOTED TO SAID CONTACT ARM AND HAVING A CAM FOLLOWER AT THE OPPOSITE END THEREOF, A TRIPFREE ACTUATING AND OVER-LOAD RELEASE LINKAGE CONNECTED TO SAID DRIVING LINK, A FIXED CAM ENGAGED BY SAID CAM FOLLOWER, SAID LINKAGE WHEN IN VARIOUS OPEN-CONTACT CONFIGURATIONS CAUTIONS SAID CAM FOLLOWER TO MOVE ALONG SAID CAM AND SAID CAM ACTING TO ESTABLISH THE EXTENT OF OPENING OF SAID PIVOTED CONTACT ARM, SAID TRIP-FREE ACTUATING AND OVER-LOAD RELEASE LINKAGE INCLUDING A PAIR OF CROSSED LEVERS ONE OF WHICH IS AN OPERATING LEVER AND THE OTHER OF WHICH IS A LATCH LEVER, A PAIR OF CONNECTING LINKS PIVOTED TO EACH OTHER AND TO SAID DRIVING LINK, SAID LINKS ALSO BEING PIVOTED TO SAID CROSSED LEVERS, RESPECTIVELY, A STORED-ENERGY DRIVE MECHANISM COUPLED TO SAID OPERATING LEVER, A LATCH MECHANISM FOR NORMALLY ARRESTING SAID LATCH LEVER, AND MEANS BIASING SAID CAM FOLLOWER ALONG SAID CAM TOWARD A POSITION WHEREIN SAID OPERATING LEVER IS AT THE STARTING END OF SAID POWER STROKE AND SAID LATCH IS IN ITS RESTORED POSITION FOR COACTION WITH SAID LATCHING MECHANISM.