Water discus
US4938486A · kind A · utility
Inventor
Key dates
| Filing date | May 17, 1989 |
| Grant date | Jul 3, 1990 |
| Priority date | — |
| Expiry date | May 17, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63H33/18
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A water discus having a round, outwardly bulging plastic body having a hollow interior and a smooth water gliding exterior surface, and mounted on the periphery of the body an impact protection element in the form of a toroid generated by a circle. The hollow body is made up of a bottom section and a cover having a closable aperture. The cover is in clamping engagement with the bottom section. The bottom section has an annular wall laterally enclosing the hollow interior of the body. The height of the wall is less than the diameter of the circle. The bottom section has a floor which supports the wall and has a portion extending laterally beyond the wall. The floor also has an outwardly bulging obverse surface. The aforementioned laterally extending portion, and particularly an annular ridge formed thereon, supports the impact protection element. The minimum distance between an exterior point on the protective element and the obverse surface of the floor is no greater than 3 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.