Abstract: An exercising device having a stationary frame and a pair of foot supporting beams pivotally secured to the stationary frame. A crank assembly is pivotally secured about a transverse axis to a post on the stationary frame above a pivot pin securing foot engaging beams to the post such that connecting rods secured between spaced-apart cranks and the beams cause the beams to move oppositely in unison as the weight of a user is alternately applied to the unsupported ends of the beams.

Abstract: A vehicle for travel along rice field levees and the like to spray chemicals upon such levees so as to control the growth of unwanted vegetation thereon. The vehicle includes a frame member having first and second sides. A pair of wheels are pivotally mounted to each side of the frame through elongated arm members in such a manner so as to hold the frame high above the supporting surface of the vehicle. The wheels mounted on each side of the frame are simultaneously driven by a motor separately from the wheels mounted on the other side of the frame in such a manner that the vehicle may be steered by individually controlling the rotation of the wheels on either side of the vehicle to thereby allow "skid steer" type steering of the vehicle.