Urinal air freshener
US10973942B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 15, 2019 |
| Grant date | Apr 13, 2021 |
| Priority date | — |
| Expiry date | Jul 24, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2209/13
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An automatic dispensing device for volatile fluid operable to apply one or more agent to a local environment for more than 14 days. Preferred devices dispense a first agent for air freshening, and may optionally dispense a second agent, such as a drain cleaner. A workable drain cleaner is structured to permit a slow release of drain cleaning agent. A dispensing device may nonexclusively operate by evaporation of volatile fluid from a carrier material that is infused with the volatile fluid; gravity-induced drip from a bulk supply of volatile fluid through a small orifice onto an emanator; osmotic transfer of volatile fluid from a bulk supply; gas-pump drive of volatile fluid at controlled pressure; or diffusion of volatile fluid through a wall of a container of bulk volatile fluid; and combinations thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.