Propulsion aids for attachment to a swimmer's feet

Buoys – rafts – and aquatic devices – Swimming aid to increase stroke efficiency – Foot attached


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441 64, A63B 3100




A flipper-type swimming propulsion aid assembly for attachment to the feet of a swimmer to increase the swimmer's effective foot area. The swimming aid for each foot includes a dismantlable frame of generally isosceles triangular configuration having side frame members of substantially equal length which are pivotally joined at the heel end of the frame and at least two cross frame members of progressively greater length adapted at their ends for removable joinder to the side frames with the longest of the cross frame members joining the free ends of the side frame members. The swimming aid also includes a fabric or plastic sheet web component for the frame with the web component being of generally isosceles triangular configuration matching the configuration and size of the frame and including side loops for receiving and maintaining the side frame members and including cross loops for receiving and maintaining the cross frame members. The cross frame members are of lengths such that upon force joinder of their ends to the side frame members the latter members are maintained pivoted outwardly to the maximum extent permitted by the web component and its side loops so that the web component is stretched to its full triangular configuration. The swimming propulsion aid assembly is maintained on the swimmer's foot in abutment with the foot sole by a forward foot strap and by an ankle strap. Through use of the flipper-type swimming propulsion aids of the invention the swimmer, in performing the American crawl stroke or back stroke, is more effectively and forcefully propelled through the water.

patent: 4250584 (1981-02-01), Korn


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