Vacuum cleaner suction tool
US3936905A · kind A · utility
17Cited by
9References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 3, 1974 |
| Grant date | Feb 10, 1976 |
| Priority date | — |
| Expiry date | Jun 3, 1994 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L9/0072
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A suction tool for use in a vacuum cleaner including a nozzle defining a suction inlet including a mid-portion and an edge portion and structure for selective blocking of air flow through the mid-portion to provide selectively high suction force at the edge portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.