Pool cleaning apparatus
US4393526A · kind A · utility
Inventors
Key dates
| Filing date | Nov 23, 1981 |
| Grant date | Jul 19, 1983 |
| Priority date | — |
| Expiry date | Nov 23, 2001 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04H4/1681
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A pool cleaning apparatus characterized by a long, hollow main body coupled to a pressurized swimming pool inlet and supporting a pair of cleaning hoses, a pressure relief valve, and an adjustable nozzle for producing a surface current. A primary cleaning hose sweeps the side and bottom surfaces of the pool, and a secondary cleaning hose follows up after the primary cleaning hose. The adjustable nozzle is used to direct a jet of water towards the surface of the water contained by the pool to create surface currents which urge floating debris towards the swimming pool's skimmers. The pressure relief valve controls the strength and vigor of the cleaning action of the apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.