Trip-free circuit breaker with thermally responsive snap action switch

Claim 1

A CIRCUIT BREAKER WHICH INCORPORATES A CONVENTIONAL TEMPERATURE RESPONSIVE SNAP ACTION SWITCH HAVING A FIXED CONTACT AND A BLADE MOVABLE IN A PREDETERMINED DIRECTION AND CARRYING A CONTACT WHICH MAKES OR BREAKS CIRCUIT UPON TEMPERATURE CHANGE CAUSED BY CHANGE OF CURRENT FLOW, COMPRISING A COMBINATION WITH SAID SWITCH: A HOUSING HAVING MEANS FOR FASTENING THE BLADE, AND A GUIDE CHANNEL TRANSVERSELY TO THE DIRECTION OF MOVEMENT OF THE BLADE; A CONTROL BLOCK SLIDINGLY SUPPORTED IN THE GUIDE CHANNEL BETWEEN HOUSING AND SWITCH AND TRANSVERSELY TO THE DIRECTION OF MOVEMENT OF THE CONTACT BLADE, AND INCLUDING A PLATE PARALLEL TO THE CONTACT BLADE AND HAVING A CUTOUT FORMING A LEAF AT ONE END OF THE PLATE WHICH LEAF IS RETAINED OUTSIDE THE CLOSED CONTACTS BY ITS CUTOUT RIM RESTING AGAINST THE BLADE CONTACT AND WHICH IS CAPABLE OF MOVING INTO THE GAP BETWEEN THE OPENED CONTACTS, AND A GUIDE RIDGE EXTENDING TRANSVERSELY TO THE DIRECTION OF MOVEMENF OF THE BLADE, FROM THE PLATE INTO THE GUIDE CHANNEL; AND SPRING MEANS IN THE GUIDE CHANNEL FOR BIASING THE CONTROL BLOCK TO MOVE THE LEAF BETWEEN THE OPENING CONTACTS UPON THE RIM HAVING BEEN RELEASED BY THE BLADE CONTACT.