Shoe attachment for wet/dry electric vacuum cleaner
US4475265A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 13, 1983 |
| Grant date | Oct 9, 1984 |
| Priority date | — |
| Expiry date | Jun 13, 2003 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L7/0009
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An integral, one piece shoe attachment for detachable insertion in the intake orifice of an electric vacuum cleaner. The bottom surface of the shoe attachment has rounded projections which raise the shoe attachment bottom surface slightly off the surface being suctioned. A flexible blade extends along the long dimension of the inlet opening and divides the inlet opening into a front and rear section. The blade projects down far enough that as the shoe attachment is moved in one direction, the blade flexes to close off one section of the inlet opening, and as the shoe attachment is moved in the opposite direction, the blade flexes in the opposite direction to close off the other section of the inlet opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.