Abstract: An electrical connection assembly for providing an electrical connection between a first component and a second component, wherein the second component is comprised of a tubular member and defines a bore, wherein the first component is received within the bore of the second component, and wherein the first component is comprised of an exterior surface. The electrical connection assembly includes an electrical contact surface associated with one of the exterior surface of the first component and the bore of the second component. Further, a plurality of electrical contact members are associated with the other of the exterior surface of the first component and the bore of the second component, wherein each of the electrical contact members is biased toward the electrical contact surface such that each of the electrical contact members contacts the electrical contact surface.

Abstract: A hollow stator for a Moineau-style motor is constructed from a composite material such as fiberglass or graphite. A series of lobes arranged along its inner surface corresponds to the external lobes of a rotor inserted in the stator, and enables use of a constant width elastomer layer between the stator and the rotor. The composite stator includes a pair of box socket interface members at its ends to enable the stator to be attached to other components such as pipeline sections.