Swim fin
US4657515A · kind A · utility
34Cited by
2References
2Claims
0Family size
Inventor
Key dates
| Filing date | Nov 15, 1985 |
| Grant date | Apr 14, 1987 |
| Priority date | — |
| Expiry date | Nov 15, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B31/11
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A swim fin having a foot pocket and two flexible beams projecting directly forwardly from the sides of the toe of the foot pocket. A rigid blade is attached to the flexible beams so that a space exists between it and the foot pocket. The elements which are provided to attach the two flexible beams to the rigid blade include a pivot point for the rigid blade. The swim fin is simple in design and is designed for maximum efficiency, comfort and reliability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.