Snap-in mounting means

Claim 1

IN AN APPARATUS FOR CONVERTING AN ELECTRICAL CONTROL DEVICE FROM A SCREW-MOUNTED TYPE TO A SNAP-IN MOUNTED TYPE WITHOUT CHANGING THE CONSTRUCTION OF THE PANEL ON WHICH IT IS ADAPTED TO BE MOUNTED, THE PANEL HAVING AN APERTURE ADAPTED FOR RECEIVING ANY ONE OF A NUMBER OF DIFFERENT SIZES OF CONTROL DEVICES THERETHROUGH AND SMALL HOLES ON OPPOSITE SIDES OF THE APERTURE ORIGINALLY ADAPTED FOR RECEIVING SCREWS TO SECURE LATERAL ARMS OF A SCREWMOUNTED CONTROL DEVICE SUPPORTING MEMBER TO THE PANEL; A SNAP-IN MOUNTING DEVICE ADAPTED TO BE SUBSTITUTED FOR THE SCREW-MOUNTED MEMBER AND TO BE SNAPMOUNTED ON THE PANEL COMPRISING: FIRST MEANS SUBSTANTIALLY IN A FIRST PLANE AND INCLUDING MEANS FOR SECURING THE SAME TO AN ELETRICAL DEVICE; A PAIR OF ARMS EXTENDING FROM THE PLANE OF SAID FIRST MEANS AND HAVING END PORTIONS IN A COMMON PLANE OFFSET FROM SAID FIRST PLANE, SAID END PORTIONS BEING ADAPTED TO OVERLIE THE PANEL BETWEEN THE APERTURE AND SCREW HOLES THEREOF; PRONGS EXTENDING FROM THE ENDS OF SAID ARMS ADAPTED TO RECEIVE INTO THE SCREW HOLES TO POSITION SAID MOUNTING DEVICE IN THE CENTER OF THE APERTURE AND TO PREVET TURNING THEREOF; AND MEANS ON SAID ARMS ADAPTED TO ENGAGE THE EDGES OF THE APERTURE AND SNAP THEREOVER WHEN SAID END PORTIONS ARE PRESSED AGAINST THE PANEL FROM ONE SIDE THEREOF AND TO ALLOW REMOVEL FROM THE SAME SIDE OF THE PANEL BY PRYING SAID ARMS THEREFROM.