Patent ID: 7752780

Claim:
An earth-working vehicle comprising an elongated main frame having a longitudinal axis therethrough, an implement support slidingly mounted to the main frame, wherein the implement support is mounted at one end of the main frame and is capable of sliding transversely along an axis of travel with respect to the elongated main frame, and motive means to slide the implement support with respect to the elongated main frame, the motive means comprising (a) a hydraulic motor secured to one of the main frame and the implement support, the hydraulic motor having a driving sprocket or pinion configured for driving rotation about an axis perpendicular to the longitudinal and transverse axes and (b) a motive element selected from the group consisting of (i) a chain having both ends secured to the other of the main frame and the implement support and (ii) a rack secured to the other of the main frame and the implement support.