Abstract: One embodiment is directed to a mobile pipeline extrusion system, comprising: a first mobile vehicle having a first electromechanical drive system and a first active suspension configured to stabilize the first mobile vehicle relative to terrain over which it may be navigated; a second mobile vehicle removably coupleable to the first mobile vehicle and having a second electromechanical drive system and a second active suspension configured to stabilize the second mobile vehicle relative to terrain over which it may be navigated; a computing system operably coupled to the first and second mobile vehicles and configured to operate the first and second electromechanical drive systems and first and second active suspensions such that the first and second mobile vehicles may move together in an end-to-end coupling configuration as a unified operational platform; and a polymeric pipeline extrusion system operatively coupled to the unified operational platform and configured to receive input materials, heat the inpu

Abstract: An earth working apparatus comprising a main frame having a hitch for detachably connecting the apparatus to a prime mover, a first ground working implement mounted on the main frame, a pair of support arms operatively connected at forwardly disposed ends thereof to the main frame for pivotal movement about a first transverse axis, ground engaging wheels mounted on the support arm, a lift arm operatively connected to each of the support arms for pivotal movement about a second transverse axis, a second earthworking implement mounted on the lift arms, chains interconnecting each of the lift arms and the main frame, a ground engaging wheel mounted on one of the frames and hydraulic cylinders operatively interconnecting each of the support arms and the main frame for angularly displacing the support arms relative to the main frame whereby upon actuation of the hydraulic cylinders when the ground engaging wheel is not in engagement with the ground, the working implements will be caused to move into and out of eng

Abstract: Disclosed herein is an electrical apparatus comprising a housing having an aperture extending between an inner and an outer surface, an electrical cord including an inner wire and an outer sheath including a strain relief portion comprising a first enlarged part engaging the housing outer surface and a second enlarged part of lesser size than the first enlarged part, extending through the aperture and including therein, inwardly of the housing inner surface, a groove extending at least partially peripherally of the second enlarged part, a U-shaped retaining clip received in the groove and including a surface engagable with the housing inner surface to prevent withdrawal of the cord through the aperture, a cover removably secured to the housing and preventing withdrawal of the clip from said groove, and edges on the clip and walls on the housing and cord engaging the clip edges for preventing relative rotation between the cord and the housing.