A foot-operated exercising device comprises a frame having a longitudinally-extending frame bar terminating at its opposite ends in a pair of transversely-extending frame legs for supporting the frame bar on a horizontal surface, and a pair of foot pedals rotatably mounted on the frame bar about a horizontal,...http://www.google.com.au/patents/US4390177?utm_source=gb-gplus-sharePatent US4390177 - Foot-operated exercising device
