US Patent 7140626 Running exercise bike

An exercise apparatus including a seatless frame for simulating running without the stress producing loads associated with each stride. The exercise apparatus has at least one front wheel and at least one rear wheel, both of which are rotationally connected to the frame. The exercise apparatus includes two independent means for propelling the apparatus along a path of travel. The first means simulates a running motion via a pair of pedals that operate in an arcuate pattern. The second means for moving the apparatus along the path of travel includes a pair of hand actuated levers.