Cleaning of a body of liquid by surface agitation
US4778599A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 7, 1986 |
| Grant date | Oct 18, 1988 |
| Priority date | — |
| Expiry date | Nov 7, 2006 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04H4/1636
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An automatic swimming pool cleaning apparatus has a surface supply hose connected to a floating unit and a further underwater hose that is connected at one end to the surface unit in fluid communication with the outlet of the surface hose and at its other outlet end to a non-buoyant cleaning unit. The underwater hose and the cleaning unit have jets directed in a downstream direction so that the cleaning unit moves through water in the pool and the underwater hose pushes the surface unit around. The cleaning unit carries a bag in which debris is collected. The surface hose also carries a jet to pull the surface unit around. The surface unit also has a jet which displaces and rotates the surface unit. The surface unit has a flotation member that is rotatable about a vertical axis. A first connector is rotatably mounted below the flotation member and a second connector is rotatably connected to the first connector. The first connector has a transverse inlet connected to the outlet of the surface hose and an axial outlet which communicates with an opposed axial inlet of the second connector. The second connector has a transverse outlet connected to the inlet of the underwater hose. A s…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.