Miniaturized variable resistor and switch

Claim 1

THE COMBINATION OF A MINIATURIZED VARIABLE RESISTANCE DEVICE WITH A SNAP-FEEL ON AND OFF SWITCH BOTH OPERATED BY THE SAME MANUALLY OPERABLE ROTATABLE CONTROL COMPRISING, A MOLDED BASE PROVIDING A COMMON SUPPORT FOR THE RESISTANCE DEVICE AND THE SWITCH, SAID BASE HAVING A FLAT BACK SURFACE, A FLAT STOCK STATIONARY TERMINAL SECURED TO SAID FLAT BACK SURFACE, SAID STATIONARY TERMINAL HAVIG A PORTION PROJECTING LATERALLY FROM THE SIDE OF SAID BASE TO PROVIDE A SWITCH BLADE CONTACT SURFACE WHICH LIES IN THE PLANE OF SAID BACK SURFACE, A FLAT STOCK PIVOT SUPPORTING TERMINAL SECURED TO SAID FLAT BACK SURFACE, SAID PIVOT SUPORTING TERMINAL HAVING A PORTION PROJECTING LATERALLY FROM THE SIDE OF SAID BASE TO PROVIDE A FLAT BEARING SURFACE FOR A SWITCH BLADE, SAID BEARING SURFACE LYING IN THE PLANE OF SAID BACK SURFACE, A SWITCH BLADE PIVOTED TO SAID PIVOT SUPPORTING TERMINAL HAVING ITS SWINGING END ANGLED FROM THE PLANE OF THE BLADE TO PROVIDE A SLOPING SURFACE FOR ENGAGING THE EDGE AND SURFACE OF THE SWITCH BLADE CONTACT SURFACE ON SAID STATIONARY TERMINAL WITH A WIPING ACTION, SAID BLADE HAVING A TAB WHICH PROJECTS TOWARDS AND ENGAGES SAID BASE TO FIX THE CLOSED POSITION OF SAID BLADE, SAID BLADE HAVING A CAM FOLLOWER WHICH IS SPACED FROM THE SIDE OF SAID BASE IN THE CLOSED POSITION OF SAID SWITCH, SPRING MEANS CONTINUOUSLY URGING SAID SWITCH BLADE INWARDLY TOWARD SAID BASE AND INTO ENGAGEMENT WITH SAID CONTACT SURFACE OF SAID STATIONARY TERMINAL, AND A MOLDED OPERATING KNOB ROTATABLY CARRIED BY SAID BASE FOR OPERATING THE RESISTANCE DEVICE, SAID KNOB HAVING A LARGE DIAMETER FINGER ENGAGING PORTION AND AN ANNYLAR FLANGE OF SMALLER DIAMETER, SPACED FROM SAID TAB IN THE CLOSED POSITION OF SAID SWITHCH, SAID SMALLER DIAMETER FLANGE BEING OF A DEPTH SUFFICIENT TO PERMIT SAID TERMIANALS, SWITCH BLADE AND SPRING TO LIE BENEATH SAID FINGER ENGAGING PORTION, SAID ANNULAR FLANGE HAVING A CAM MOLDED ON THE OUTER SURFACE THEREOF PROVIDED WITH A SHARPLY INCLINED SURFACE, A PEAK AND A SWITCH OPEN SEAT, SAID CAM ENGAGING SAID CAM FOLLOWER TO MOVE SAID SWITCH BLADE INTO OPEN POSITION AS SAID KNOB IS ROTATED IN ONE DIRECTION, SAID CAM FOLLOWER SLIDING OVER SAID PEAK AND DOWN INTO SAID SWITCH OPEN SEAT WITH A SNAP-OFF FEEL, SAID CAM FOLLOWER RIDING OVER SAID PEAK AND DOWN SAID SHARPLY INCLINED SURFACE TO LET SAID BLADE SNAP INTO CLOSED POSITION WITH A SNAP-ON FEEL UPON ROTATION IN THE OPPOSITE DIRECTION.