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US 5,330,377 AGranted
Multi-level swim fin
OwnerGregory P. Kernekinventor
Life of this patent
Estimating the term…
Abstract
A swim fin having a shoe and an integrally connected bi-level, relatively short fin assembly. The fin assembly includes upper and lower levels connected by side walls. Automatic valve flaps are provided at the outer portions of baffles and pivot about transverse axes. The valves automatically open and close during the kick to change the apparent area of the assembly. The bi-level arrangement increases the overall efficiency of the swim fin during use.
Claims9
A swim fin assembly comprising:
- a shoe having a toe portion;
- a multi-level fin assembly connected to said toe portion, each level of said assembly including a fin having an apparent area in the water;
- and automatic valve means associated with each of said levels for maximizing said apparent area during upward strokes of said fin assembly in the water and for minimizing said apparent area during downward strokes thereof.
A swim fin assembly comprising:
- a shoe having a toe portion;
- a fin assembly having upper and lower levels, each of said levels having a pair of fin members;
- means for connecting only said lower level to said toe portion;
- and substantially planar side wall means for attaching said upper and lower levels of fin members to one another in vertically spaced relationship.
1 more element
Dependencies are inferred from the claim text.