Electric switch with improved disk and contact structure

Claim 1

A ROTARY SWITCH COMPRISING: A CYLINDRICAL BASE HAVING A BOTTOM AND A SIDE WALL, SAID BOTTOM HAVING A CENTRAL HUB, A RING ABOUT SAID HUB, SAID RING AND SAID HUB DEFINING AN ANNULAR CHANNEL AND A STRUT EXTENDING ACROSS SAID CHANNEL FROM SAID RING TO SAID HUB; A PRIMARY FIXED CONTACT IN SAID BASE AND A PLURALITY OF SECONDARY FIXED CONTACTS IN SAID BASE, EACH OF SAID FIXED CONTACTS HAVING A DISC SHAPED CONTACTING ELEMENT; A MOVABLE CONTACT ASSEMBLY COMPRISING A BIFURCATE ARCUATE SECTION FOR ENGAGING THE DISC SHAPED ELEMENT OF THE PRIMARY FIXED CONTACT AND A BIFURCATE FINGER FOR ENGAGING THE DISC-LIKE MEMBERS OF THE SECONDARY CONTACTS; A HOLLOW CYLINDRICAL DRIVE MEMBER HAVING A FLUTED SECTION AND A POSITIONING SECTION, SAID POSITIONING SECTION FITTING IN THE ANNULAR CHANNEL OF SAID BASE AND HAVING MEANS ENGAGING THE MOVABLE CONTACT ASSEMBLY WHEREBY ROTATION OF SAID DRIVE MEMBER CAUSES ROTATION OF THE CONTACT ASSEMBLY; A LEAF SPRING SEATED IN SAID BASE AND ENGAGING THE FLUTING OF THE DRIVE MEMBER TO PROVIDE INDEXING WHEN SAID DRIVE MEMBER IS ROTATED; A HANDLE HAVING A SOCKET ENGAGING THE FLUTED SECTION OF THE DRIVE MEMBER, WHEREBY TURNING SAID HANDLE TURNS SAID DRIVE MEMBER; A HELICAL SPRING IN SAID HOLLOW DRIVE MEMBER PRESSING UPON SAID MOVABLE CONTACT ASSEMBLY; AND A BOLT PASSING THROUGH THE HUB OF SAID BASE AND THREADED IN SAID HANDLE TO HOLD SAID HANDLE TO SAID BASE AGAINST THE ACTION OF SAID HELICAL SPRING.