| 摘要 |
<p>An exercise apparatus features a mechanical arrangement in which the motion of the rotary passive resistance device is translated to bidirectional linear motion. The apparatus has a central columnar structure (9) on which a traveler assembly (12) is carried for movement in a generally vertical plane. The traveler assembly has a horizontal bar, mounted between arms (2), through which the one exercising applies effort to the apparatus. A counterweight (80) is provided to balance the weight of the traveler assembly. First and second cables (14, 18) extend respectively up and down from the traveler assembly, across idler pulleys (19, 20), and then respectively down and up to a common rotatably mounted drum assembly (21). Thus, movement of the traveler assembly results in winding of one cable onto the drum assembly, whil e the other is unwound. A rotary passive resistance device, preferably a magnetic particle brake (55), is connected to the drum to provide a controllable force which the user must overcome. An electrical control system (3) makes possible selection of different resistances for upward and downward motion.</p> |
