Abstract: A knock-down lever assembly which enables the driver of a disabled automotive vehicle to move it manually for relatively short distances without assistance from others. The device permits the vehicle to be moved manually away from a lost traction area such as a pavement covered with snow, ice, mud, oil or other slippery substances, or from a traffic lane to the shoulder of the road.

Abstract: An adjustable-pitch axial fan wheel. A hub has an outer surface forming a portion of a sphere. A plurality of blades are attached to the hub, each blade having a substantial flange at the base portion, the inner surface of the flange being spherical to match the surface of the hub. A central strengthening bolt extends through the blade and projects into the hub to form a pivot axis for the blade. Arcuate holes are formed in the flange, the arcuate holes being alignable with bolt holes in the hub to bolt the flange to the hub while permitting blade pitch adjustment within about 28.degree. of rotation of each blade with respect to the hub.