Patent ID: 6667564
Filing Date: 2003-12-23
Classification: H02K

Abstract:
A mechanically commutated DC motor comprising:positive and negative stationary power supply terminals; a stator assembly including a plurality of lamination stacks positioned around a central aperture and a plurality of coils, each coil being wound around a respective lamination stack, each of the coils having two ends; a rotor assembly including a rotor body with a permanent magnet ring and a non-conductive timing cam on one face of the rotor body, the rotor body being positioned in the central aperture of the stator assembly; a plurality of terminating conductive pads, the number of conductive pads corresponding to the number of coils, each conductive pad having first and second flexible contacts opposite the timing cam and selectively movable into and out of electrical contact with the positive and negative power supply terminals, respectively, in response to the action of the timing cam, each conductive pad being electrically connected to two different coils.