Swimming fin
US6159064A · kind A · utility
2Cited by
10References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1999 |
| Grant date | Dec 12, 2000 |
| Priority date | — |
| Expiry date | Mar 8, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B31/11
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A swimming fin includes a blade and a foot pocket, the blade including a relatively long first blade and a short second blade. The second blade underlies a bottom surface of the first blade and has transversely opposite side edge regions longitudinally extending inside transversely opposite side edges of the first blade and an intermediate region extending between the side edge regions and having its front end curved toward the foot pocket. The swimming fin thus formed can strengthen a thrust obtained by down-kicking movement of the swimming fin to thereby facilitate the up-kicking movement of the swimming fin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.