Tennis court drying machine
US4989293A · kind A · utility
40Cited by
4References
2Claims
0Family size
Inventor
Key dates
| Filing date | May 15, 1989 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | May 15, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L11/4088
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A mechanism for removing water from tennis courts. A large roller having a sponge sleeve thereon is rolled over the court surface to pick up water lying on the court surface. As the roller rotates the sponge sleeve moves against a smaller roller that exerts a localized pressure force on the sponge material; water is thus squeezed out of the sponge pores into a collection tank located below the small roller. The mechanism further includes a heating device located behind the large roller to direct heated gas onto the tennis court surface to evaporate moisture that was not picked up by the roller (sponge).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.