Swimming flipper
US5358439A · kind A · utility
53Cited by
2References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 16, 1993 |
| Grant date | Oct 25, 1994 |
| Priority date | — |
| Expiry date | Jul 16, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B31/11
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
Swimming flipper (1) comprising a flexible but relatively rigid blade (3) and a relatively soft shoe (2) associated to one end of the blade. The blade (3) has an active portion (5) formed by at least two relatively rigid thermoplastic materials (5a, 5b) joined to each other and of which the second (5b) occupies a central area of the said active portion (5) in which the first material (5a) is absent. Such a central area has a width comprised between 5 and 95% of the active portion (5) of the blade (3). (FIG. 1)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.