Breathing apparatus with ultraviolet light emitting diode
US10335618B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jul 3, 2014 |
| Grant date | Jul 2, 2019 |
| Priority date | — |
| Expiry date | Feb 18, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2209/111
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A breathing apparatus according to embodiments of the invention includes a facemask portion sized to cover a lower portion of a wearer's face. The facemask portion includes a flow chamber. The flow chamber includes a first opening disposed near a first end of the flow chamber, a second opening disposed near a second end of the flow chamber, and a serpentine passage disposed between the first opening and the second opening. At least one light emitting diode configured to emit light having a peak wavelength in the ultraviolet range is disposed in the serpentine passage. The at least one light emitting diode is disposed off center relative to a centerline oriented along a direction of air flow through the serpentine passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.