Device for freshening exhaust from vacuum cleaners
US6630233B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Dec 28, 1998 |
| Grant date | Oct 7, 2003 |
| Priority date | — |
| Expiry date | Dec 28, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249997
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Devices and methods using freshening agents, such as perfumes, synthetic fragrances, deodorizers, fragrance fixing agents or mixtures thereof, for freshening the air exhausting from a vacuum cleaner during operation. One embodiment includes a thin, flexible sheet capable of being vacuumed into a vacuum cleaner, wherein the sheet has the freshening agent bound thereto. Methods for utilizing such a device are also disclosed. A second embodiment includes a disposable vacuum cleaner bag wherein at least a portion of the vacuum cleaner bag has the freshening agent bound thereto. A third embodiment includes a tubular collar to be affixed to the inlet tube of a vacuum cleaner, wherein the collar has the freshening agent bound thereto. The applied fragrance shall have a higher or greater impact on the olfactory senses of the vacuum cleaner operator than does the malodorous exhaust.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.