Electric motor

Claim 1

In an electric motor having magnetic means forming at least one polarized magnetic field having an elongated dimension transverse to a selected direction of drive, a pair of conductor arrays, each conductor array including a plurality of parallel, elongated conductor elements spaced apart with respect to each other along said selected direction of drive, and a thin flat non-magnetic carrier for said conductor arrays and means maintaining said carrier for movement along a path defined by said selected direction, the improvement comprising each elongated conductor element in said arrays being constituted by a conductive path formed on said non-magnetic carrier and having means constituting current input ends, each said conductor array being separate from the other, respectively, and printed on said thin flat carrier, brush means for applying electrical energy to a selected number of said elongated conductor elements in each of said arrays via said current input ends to energize said selected conductor elements, the remaining of said elongated conductor elements in each array remaining unenergized and not having any energizing current flow therein and, wherein each said conductor array is constituted by a parallel conductors transverse to said direction of drive and alternate ones of said lateral end terminations are connected to each other to form a serpentine conductor, and said brush means has a length in the direction of drive to span the space between a pair of parallel conductors.