Surface cleaning apparatus with cleaning fluid supply
US7784148B2 · kind B2 · utility
43Cited by
29References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 16, 2006 |
| Grant date | Aug 31, 2010 |
| Priority date | — |
| Expiry date | Feb 14, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L11/4097
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A surface cleaning apparatus comprises a fluid delivery system including a supply of cleaning fluid and a fluid recovery system for drawing dirty cleaning fluid from the surface to be cleaned. The apparatus can comprise a passageway that passes heated motor cooling air in heat exchange with the cleaning fluid to heat the cleaning fluid. The apparatus can further comprise a mixing manifold that mixes first and second cleaning fluids at different concentrations for different cleaning modes. The apparatus can further comprise a fluid valve having a shape memory alloy actuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.