Abstract: An improved linkage assembly is provided for opening and closing a panel, such as a window or the like, and for locking said panel in an infinite number of positions between a fully opened and a fully closed position. The linkage assembly has a plurality of symetrically arranged and pivotally interconnected links with a lock for securing two overlapping links together to set the ends of the linkage assembly in a fixed position relative to each other.

Abstract: A vehicle drive train includes a pair of drive shaft portions, and an intershaft differential connecting them. One drive shaft portion drives a pair of drive axles through a differential mechanism, each drive axle in turn driving a pair of wheels in tandem through a differential mechanism and chain and sprocket means. The other drive shaft portion drives another pair of vehicle wheels through a differential mechanism. The inter-shaft differential mechanism may be chosen to apply greater driving torque to one drive shaft portion, i.e., for example, the drive shaft portion which is utilized to drive the wheels in tandem, than is applied to the other drive shaft portion.