Bi-metallic overload relay having snap switch toggle action

Claim 1

IN AN ELECTRIC SWITCH, THE COMBINATION INCLUDING A HEAT RESPONSIVE ELEMENT COMPRISING A BIMETALLIC STRIP ANCHORED AT ONE END SO AS TO HAVE FLEXING MOVEMENT AT ITS OPPOSITE FREE NED, A STATIONARY SWITCH CONTACT, A SWITCH UNIT OF THE TOGGLE TYPE, SAID UNIT INCLUDING A PIVOTALLY MOUNTED MOVABLE LEVER AND A PIVOTALLY MOUNTED TOGGLE LEVER, RESILIENT MEANS CONNECTING AN END OF THE MOVABLE LEVER WITH AN END OF THE TOGGLE LEVER, A MOVABLE CONTACT FIXED TO AND MOVABLE WITH THE TOGGLE LEVER AND ADAPTED TO COACT WITH THE STATIONARY CONTACT, A SECOND BIMETALLIC STRIP PROVIDING TEMPERATURE COMPENSATING MEANS, A HINGE ELEMENT FOR ANCHORING ONE END OF THE SECOND STRIP SO THAT THE OPPOSITE END MAY HAVE FLEXING MOVEMENT AND SO THAT THE STRIP MAY ALSO HAVE LIMITED PIVOT-LIKE MOVEMENT TOWARDS AND FRO THE SWITCH UNIT AND ABOUT THE HINGE ELEMENT AS AN AXIS, SAID HEAT RESPONSIVE ELEMENT AND SAID COMPENSATING MEANS BEING LOCATED ON OPPOSITE SIDES OF THE SWITCH UNIT AND BEING DISPOSED SO THAT FLEXING TAKES PLACE TOWARDS AND FROM THE SWITCH UNIT, COUPLER MEANS CONNECTING THE FLEXING ENDS OF THE TWO BIMETALLIC STRIPS, AND AN ACTUATING ARM FIXED TO THE SECOND BIMETALLIC STRIP AT THE CONNECTION OF THE SAME TO THE HINGE ELEMENT, SAID ARM EXTENDING APPROXIMATELY PARALLEL WITH THE SECOND BIMETALLIC STRIP FOR APPROXIMATELY ITS LENGTH AND HAVING CONNECTED RELATION WITH THE MOVABLE LEVER OF THE SWITCH UNIT.