Propulsion aids for attachment to a swimmer's feet

In a flipper-type swimming propulsion aid assembly for attachment to each foot of a swimmer to increase the swimmer's effective foot area:

• (a) a dismantlable frame comprised of side frame members of substantially equal length, said side frame members being pivotally joined at a heel end of said frame, and at least two cross frame members of progressively longer lengths adapted for removal joinder to said side frame members, the longest of said cross frame members joining free ends of the side frame members at a toe end of said frame with the result that said frame is of generally isosceles triangular configuration;
• (b) a web component for said frame comprised of a flexible material selected from the group consisting of fabric and sheet plastic materials, said web component being of generally isosceles triangular configuration matching the configuration and size of said frame, said web component including side loops for receiving and maintaining the side frame members and including cross loops for receiving and maintaining the cross frame members, said cross frame members being of lengths such that upon the forced joinder of their ends to said side frame members said latter members are maintained pivoted outwardly to the maximum extent permitted by the web component and its side loops whereby said web component is stretched to its full triangular configuration;
• (c) a foot strap extending through one of the cross loops of said web component for attachment to said web component and of a length in its opposite end portions extending from said cross loop sufficient to surround the forward portion of the swimmer's foot and connectively mate atop said foot;
• and
• (d) an ankle strap affixed to said side frame members at the heel end of said frame and of a length in its opposite end portions sufficient to cross over the swimmer's foot in front of the ankles, cross around the swimmer's ankle and connectively mate behind the swimmer's leg.