Subminiature potentiometer

Claim 1

A SUBMINIATURE POTENTIOMETER COMPRISING A TWOPART WAFER-LIKE HOLLOW CASING OF INSULATING MATERIAL HAVING A PAIR OF OPPOSED BOSSES INTEGRAL WITH AND EXTENDING TOWARD ONE ANOTHER FROM A PAIR OF OPPOSED INTERIOR WALLS THEREOF AND POSITIONED CENTRALLY OF AND COOPERATING WITH INTERIOR SURFACES OF SAID HOLLOW CASING TO PROVIDE A SURROUNDING ENDLES CHANNEL, A WIRE-WOUND RING-LIKE RESISTIVE UNIT SEATED IN SAID ENDLESS CHANNEL, ROTARY CONDUCTING CONTACTOR MEANS HAVING A CONTACTOR SUPPORTED FOR ROTARY MOVEMENT DIRECTLY ON AND BETWEEN SAID OPPOSED BOSSED WITH ITS CONTACTOR BEARING AGAINST THE WINDING OF SAID RESISTIVE UNIT, THE JUXTAPOSED SURFACES OF SAID CONTACTOR MEANS AND OF SAID OPPOSED BOSSES BEING COMPLEMENTAL TO ONE ANOTHER AND SHAPED TO PERMIT SAID CONTACTOR MEANS TO ROTATE WHILE HOLDING SAID CONTACTOR MEANS AGAINST DISPLACEMENT RADIALLY OF ITS AXIS OF ROTATION, SAID ROTARY CONTACTOR MEANS BEING SHAPED COMPLEMENTALLY TO JUXTAPOSED SURFACES OF SAID PAIR OF BOSSES SO AS TO BE HELD ROTATABLY CENTERED THEREBETWEEN, SEPARATE ELECTRICAL CONDUCTORS ELECTRICALLY CONNECTED RESPECTIVELY WITH SAID ROTARY CONTACTOR AND WITH THE OPPOSITE ENDS OF SAID RESISTIVE UNIT AND HAVING TERMINAL ENDS EXTENDING TO THE EXTERIOR OF SAID HOLLOW CASING, AND MEANS ADJUSTABLE FROM THE EXTERIOR OF ONE EDGE OF SAID WAFER-LIKE CASING AND OPERATIVELY CONNECTED WITH SAID CONTACTOR MEANS FOR ADJUSTING THE POSITION OF SAID CONTACTOR ALONG THE WINDING OF SAID RESISTIVE UNIT.