Cleaning device
US4896392A · kind A · utility
5Cited by
4References
7Claims
0Family size
Inventors
Key dates
| Filing date | Mar 28, 1988 |
| Grant date | Jan 30, 1990 |
| Priority date | — |
| Expiry date | Mar 28, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61H2033/0037
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A cleaning device for removal of sand and/or debris from the bottom of a tank. The device comprises a cylinder having an opening at a first end which is smaller than the cylinder. A handle is mounted on a second end of the cylinder. A vent opening is formed in the cylinder adjacent the handle. A valve is mounted on the handle to open and close the opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.