Open type breathing-out particles capture and filtration device
US12397180B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2022 |
| Grant date | Aug 26, 2025 |
| Priority date | — |
| Expiry date | Mar 25, 2044 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2279/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An open type breathing-out particles capture and filtration device includes a mask having an air-in space defined between an upper edge of the mask and a user's face; a suction assembly including an air expelling pipe communicable with the air-in space and a fan; filtering materials located upstream of the fan; and a power supply driving the fan to rotate and produce a suction airflow. External air flowed into the mask via the air-in space and air breathed out of the user's nose and mouth is sucked by the suction airflow to pass through the filtering materials, so that air discharged from the air expelling pipe is clean air without any infection source. With the air-in space, an additional load applied to the mask by the suction airflow is reduced and contact areas between the mask and the user's face is also reduced, making the mask more comfortable for wearing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.