Rotary resistor arrangement employ- ing a galvanomagnetic semiconduc- tor field plate

Claim 1

A ROTARY RESISTOR ARRANGEMENT COMPRISING A GALVANOMAGNETIC SEMICONDUCTOR FIELD PLATE OF FLAT SICKLE-SHAPED CONFIGURATION COMPRISING SEMICONDUCTOR MATERIAL HAVING A SURFACE OF SUBSTANTIALLY PLANAR CONFIGURATION AND ELECTRICAL CONTACTS ON THE RESPECTIVE ENDS OF SAID FIELD PLATE, PARALLEL SPACED ANISOTROPIES OF GOOD ELECTRICAL CONDUCTIVITY RELATIVE TO THE CONDUCTIVITY OF SAID SEMICONDUCTOR MATERIAL, SAID ANISOTROPIES BEING POSITIONED IN THE SURFACE OF SAID FIELD PLATE PARALLEL TO THE PLANE OF SAID SURFACE AND SUBSTANTIALLY PERPENDICULAR TO AT LEAST THE PRINCIPAL PORTION OF A CURRENT PATH BETWEEN THE ELECTRICAL CONTACTS OF SAID FIELD PLATE ESSENTIALLY TAKEN BY CURRENT SUPPLIED TO SAID FIELD PLATE, A MAGNET HAVING ARCUATE SEGMENTSHAPED POLE SHOES DEFINING AN AIR GAP THEREBETWEEN FOR RECEIVING SAID FIELD PLATE THEREIN, SAID FIELD PLATE AND SAID MAGNET BEING ARRANGED TO BE ROTATABLE ABOUT A COMMON GOMETRIC AXIS OF RELATION AND BEING MUTUALLY ROTATABLE WITH RESPECT TO EACH OTHER WITH SAID PLATE BEING POSITIONED IN THE AIR GAP OF SAID MAGNET WHEREBY THE RESISTANCE OF SAID FIELD PLATE VARIES SUBSTANTIALLY LINEARLY WITH THE ANGLE OF ROTATION.