Mask apparatus
US11998769B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2021 |
| Grant date | Jun 4, 2024 |
| Priority date | — |
| Expiry date | Apr 28, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B23/02
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A mask apparatus includes: a mask body including an air duct disposed at a front surface of the mask body, a fan module disposed at the front surface of the mask body to correspond to a suction hole of the air duct, and configured to suction external air to supply the suctioned air to the air duct, and a mask body cover that is coupled to the front surface of the mask body and that covers the fan module and the air duct. An air passage through which air suctioned by the fan module flows is provided in the air duct, and an embossed portion is disposed on at least a portion of a surface of the air duct that is configured to be in contact with the air flowing through the air passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.