Swim or dive fin
US6568973B2 · kind B2 · utility
15Cited by
28References
125Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 20, 2001 |
| Grant date | May 27, 2003 |
| Priority date | — |
| Expiry date | Mar 20, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B31/11
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A swim fin comprises a footpocket (1) and a propelling blade (2), which has a central longitudinal member (3) for supporting and stiffening the blade (2). The blade (2) has at least one pair, preferably a plurality, of ribs (5) oriented toward the free end (4) of the blade (2) and extending from the central longitudinal member (3) to the peripheral edge (4, 6) of the blade (2). The gaps (6) between the ribs (5) are at least partly closed by at least one waterproof element, so that the fin has an in-fluid behavior and an exterior aspect which is comparable to a plume or a bird's feather.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.