Underwater cleaning apparatus
US4304022A · kind A · utility
45Cited by
5References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 26, 1979 |
| Grant date | Dec 8, 1981 |
| Priority date | — |
| Expiry date | Dec 26, 1999 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04H4/1654
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A tapering flow duct is formed below a chassis having a caterpillar track and forms lateral openings between a cleaning brush and the tracks. The flow duct is connected through an opening to a suction duct of a suction pump which conveys the sucked up liquids with the contaminants contained therein into a filter. Due to the increased flow velocity, the static pressure in the flow duct is reduced, so that the chassis is pressed onto the bottom surface and can overcome severe gradients without sliding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.