Threepole-switch for wall mounting with contact dampening means

Claim 1

A SWITCH COMPRISING, IN COMBINATION, A HOUSING; AT LEAST ONE FIXED CONTACT IN SAID HOUSING; AT LEAST ONE MOVABLE CONTACT MEANS IN SAID HOUSING AND COMPRISING A LEVER PIVOTALLY MOUNTED AT ONE END IN SAID HOUSING, AN ARCUATE BLADE INTEGRALLY CONNECTED AT ONE END TO SAID LEVER INTERMEDIATE THE ENDS OF THE LATTER AND PROJECTING THEREFROM TOWARDS SAID FIXED CONTACT, AND A CONTACT PORTION FIXED TO THE OTHER END OF SAID BLADE, SAID LEVER BEING TURNABLE BETWEEN AN OPEN POSITION IN WHICH SAID CONTACT PORTION IS SPACED FROM SAID FIXED CONTACT AND A CLOSED POSITION IN WHICH SAID CONTACT PORTION ENGAGES SAID FIXED CONTACT; BIASING MEANS COOPERATING WITH SAID LEVER AND BEING BIASSED SO AS TO TEND TO MOVE THE LATTER TO SAID CLOSED POSITION; AND OPERATING MEANS EXTENDING FROM THE EXTERIOR OF THE HOUSING INTO THE LATTER AND INCLUDING A MEMBER COOPERATING WITH THE OTHER END OF SAID LEVER AND BEING MOVABLE FROM AN ACTIVE POSITION ENGAGING SAID OTHER END OF SAID LEVER TO MOVE THE LATTER AGAINST THE FORCE OF SAID BIASING MEANS TO SAID OPEN POSITION, AND AN INACTIVE POSITION SPACED FROM SAID OTHER END OF SAID LEVER SO THAT THE LATTER WILL RAPIDLY MOVE UNDER THE INFLUENCE OF SAID BIASING MEANS TO SAID CLOSED POSITION, WHEREBY SAID ARCUATE BLADE WILL PREVENT REBOUNDING OF SAID CONTACT PORTION FROM SAID FIXED CONTACT AFTER ENGAGEMENT WITH THE LATTER.