Cleaning apparatus and method
US4307484A · kind A · utility
27Cited by
3References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 28, 1979 |
| Grant date | Dec 29, 1981 |
| Priority date | — |
| Expiry date | Sep 28, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L11/4075
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
Apparatus and method for cleaning surfaces such as carpet and the like by the application of liquid and the vacuum extraction of liquid from the surface to be cleaned wherein operation in a selected one of two modes is facilitated. One mode of cleaning involves spraying an application of liquid. The other mode of operation involves sheeted application of liquid and subjects the liquid to ultrasonic vibration before extraction. Particular characteristics are described which enhance selectivity of cleaning in these two modes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.