Debris vacuum selectively usable as a hand-held and wheeled unit
US5294063A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 4, 1991 |
| Grant date | Mar 15, 1994 |
| Priority date | — |
| Expiry date | Nov 4, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L5/14
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The combination of: a) a portable vacuum unit useable independently in a portable vacuum mode and having a housing defining an intake opening into which debris to be picked up is drawn and an outlet opening in communication with the intake opening, and structure for developing suction at the intake opening and for directing debris drawn through the intake opening to the outlet opening for expulsion thereat; and b) a mobile support for the portable vacuum unit and having a frame and structure on the frame for facilitating movement of the mobile support against and relative to a subjacent surface carrying the mobile support. The combination further contemplates cooperating structure on the mobile support and portable vacuum unit for releasably holding the portable vacuum unit in an operative position on the mobile support wherein the vacuum unit intake opening is positioned to pick up debris on a subjacent surface on which the mobile support is carried.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.