| 摘要 |
<p>The invention relates to a swimming device with manual, pneumatic or electromechanic drive, intended for a person's motion, when immersed or semi-immersed. According to the invention, the device has one or several propelling devices (P) with the prevalent dimension parallel with the attachment axis, provided with some hydrodynamically profiled surfaces (26) which are axially flexible or elastic and are fixed on some axles (A) with alternating rotary motion mounted on a body (C), driven manually, by means of some cables, pneumatically or electromechanically, the propelling device (P) consisting of an elastic cone (20) provided with some equally-spaced milled channels (h) and a profiled conical bushing (21) between which there are equidistantly centrally and circularly fixed some spokes (22) with some plastic bushings (23), while, by acting with a washer (25) on a nut (24), the spokes (22) are fastened and the propelling device (P) is fixed on an end of the driving axle (A) so that the hydrodynamically profiled active surfaces (26) can be alternately deformed in the surface plane or perpendicular thereon, depending on the direction of the rotary forces, thereby creating a channel leading the water flow, with efficiency amplifying effect, where the propelling device (P) can have two, three or four wings.</p> |
