摘要 |
<p>The pair of handles are protruded from a base consisting of a pair of laterally extending frame (20). A pair of roller devices (42,52) at upper sides of frame is configured to slide along lateral directions. A pair of pedals (41,51) is mounted over the roller devices with sleeves (411,511) from the pedal bottom sides rotatably mated around vertical pivot seats (422,522).</p> |