Miniature multi-turn variable resistor

Claim 1

A VARIABLE RESISTOR COMPRISING: FIRST MEANS, INCLUDING AN ELONGATE HOUSING PROVIDING AN ELONGATE ENCLOSED CHAMBER OF SUBSTANTIALLY CIRCULAR CROSS-SECTION AND HAVING A LONGITUDINAL AXIS ALONG THE LONGITUDINAL CENTER OF THE CHAMBER, SAID HOUSING INCLUDING FIRST AND SECOND ENDS DEFINING END WALLS OF SAID CHAMBER AND SAID FIRST MEANS INCLUDING COAXIALLY ALIGNED BEARING MEANS AT SAID ENDS OF SAID HOUSING; SECOND MEANS, INCLUDING AN ELONGATE ELECTRICAL RETURN CONDUCTOR DISPOSED ALONG THE AXIS OF SAID CHAMBER AND FIXED TO SAID SECOND END OF SAID HOUSING AND HAVING A TERMINAL CONNECTION EXTENDING TO THE EXTERIOR OF SAID HOUSING; THIRD MEANS, INCLUDING A HELICAL RESISTANCE ELEMENT OF A PLURALITY OF CONVOLUTIONS DISPOSED IN SAID CHAMBER COAXIALLY WITH SAID RETURN CONDUCTOR AND HAVING RESPECTIVE TERMINAL CONNECTIONS TO ELECTRICAL ENDS OF THE ELEMENT, SAID CONNECTIONS EXTENDING TO THE EXTERIOR OF SAID HOUSING; AND FOURTH MEANS, INCLUDING ELONGATE ROTARY MEANS ROTATABLY SUPPORTED AT BOTH ENDS THEREOF BY SAID BEARING MEANS AND ARRANGED FOR ROTATION ABOUT A LONGITUDINAL AXIS COINCIDENT WITH SAID FIRST NAMED AXIS, SAID ROTARY MEANS COMPRISING AN ELONGATE CARRIAGE OF GENERALLY CYLINDRICAL CONFIGURATION DISPOSED AROUND AND ALONG SAID RETURN CONDUCTOR AND SUPPORTING SAID CONDUCTOR ADJACENT THE FIRST END OF SAID HOUSING AND SAID ROTARY MEANS BEING ENCIRCLED BY SAID RESISTANCE ELEMENT, AND FURTHER COMPRISING A SLIDER DEVICE SLIDABLE ALONG SAID RETURN CONDUCTOR AND ROTATED BY SAID ELONGATE CARRIAGE AND ENGAGING AND ELECTRICALLY INTERCONNECTING SAID RETURN CONDUCTOR AND SAID RESISTANCE ELEMENT TO VARY THE RESISTANCE EXHIBITED BETWEEN SAID FIRST NAMED TERMINAL CONNECTION AND ANOTHER OF SAID TERMINAL CONNECTIONS.