Screwshaft-adjusted variable resistor and method

Claim 1

A LEADSCREW-ADJUSTED VARIABLE RESISTOR COMPRISING: FIRST MEANS, COMPRISING AN ELONGATE HOUSING COMPRISING WALL-FORMING MEANS PROVIDING AN ELONGATE CHAMBER IN THE INTERIOR THEREOF AND HAVING AN OPENING THROUGH AND END WALL THEREOF COMMUNICATING WITH SAID CAVITY; SECOND MEANS, COMPRISING A LEADSCREW DISPOSED LONGITUDINALLY OF SAID HOUSING WITH A SCREW THREAD EXPOSED IN SAID CHAMBER AND A SHANK PORTION DISPOSED ING SAID OPENING, SAID SHANK PORTION COMPRISING PORTIONS FORMING A CIRCUMFERENTIAL GROOVE BOUNDED AT ITS ENS BY SHOULDERS; THIRD MEANS, COMPRISING A RETURN CONDUCTOR, A RESISTANCE ELEMENT, CONTACT MEANS OPERABLE BY SAID LEADSCREW AND BRUSHING ON SAID ELEMENT AND CONDUCTOR, AND RESPECTIVE TERMINAL MEANS FOR SAID ELEMENT AND SAID CONDUCTOR; AND FOURTH MEANS, COMPRISING A GENERALLY CYLINDRIC SEAL AND RETAINER MEANS TIGHTLY ENGAGED IN THE SAID CIRCUMFERENTIAL GROOVE AND ADHESIVELY SECURED TO SAID HOUSING MEANS IN SAID OPENING, WHEREBY SAID LEADSCREW IS ROTATABLY SECURED IN A FIXED LONGITUDINAL POSITION RELATIVE TO SAID HOUSING.