Swimming flipper with a composite blade and a method for its manufacture
US5163859A · kind A · utility
46Cited by
5References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 11, 1991 |
| Grant date | Nov 17, 1992 |
| Priority date | — |
| Expiry date | Jan 11, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B31/11
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A swimming flipper includes a blade of fairly rigid thermoplastic material and a shoe of elastomeric material or soft thermoplastic rubber. The blade has a partially multi-layered structure including a base layer made of the fairly rigid thermoplastic material and a partial outer layer of a more resilient material which is superimposed on and connected permanently to the base layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.