Thermoplastic swim fin
US4778423A · kind A · utility
8Cited by
3References
6Claims
0Family size
Inventor
Key dates
| Filing date | Oct 19, 1987 |
| Grant date | Oct 18, 1988 |
| Priority date | — |
| Expiry date | Oct 19, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B31/11
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
The blade, beams and foot pocket of the improved swim fin are all molded together in one piece of the same non-rubber thermoplastic elastomer. To provide flexibility, the part of the foot pocket that fits over the arch of the foot is formed to include a plurality of straps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.