Abstract: In one example, an electrically conductive structure includes an elongated substantially flat single piece of plastic permeated with conductive fibers including conductive fibers at a contact surface of the piece. The piece of plastic includes a bend that defines two contact surfaces angled with respect to one another near one end of the piece and a flexible stem between the two contact surfaces and the other end of the piece.

Abstract: A slip ring assembly is disclosed allowing significant external weight on either the stationary or rotating sides of the slip ring. Additionally, a slip ring assembly is disclosed allowing multiple small, linear, rolling contacts on each conductive ring of each electrical receiver disk of the slip ring (both the stationary and the rotating electrical receiver disks). Disclosed is an embodiment of a separator plate having a spiraling-out-from-the-center series of holes and in those holes of the separator plate are the small linear rolling, contacts. In one embodiment each spiraling series of holes with small the rolling contacts provides one rolling contact on each electrical conductive ring on each receiver disk. These spiral rings enable a slip ring designer to provide multiple rolling contacts on each circular electrical conduction ring by simply increasing the number or spiraled series of holes.

Abstract: A direct current motor has a wound stator, a permanent magnet rotor having a commutator assembly, and brush gear. The brush gear has a first pole brush, a second pole brush and a plurality of commutating brushes. The commutator assembly has a cylindrical insulating base, and first and second members fixed to the base. The first member includes a radially extending first slip ring and a number of axially extending first bars. The second member includes a radially extending second slip ring and a number of axially extending second bars. The first and second pole brushes make continuous sliding contact with the first and second slip rings respectively. The first and second bars are fixed to the outer cylindrical surface of the base and form a cylindrical surface against which the commutating brushes make sliding contact.

Abstract: A segmented rotor comprises two disc-like members electrically charged with opposite polarities having circumferentially spaced interleaved fingers extending in an axial direction electrically insulated from one another and rotationally driven by an insulated shaft. Suitable brushes extend radially into contact with the interleaved fingers to produce repetitive alternate polarity electrical signals at each brush as the rotor rotates. The electrical signals are fed to utilization devices to control their operation.