Patent · US Active

Personal air filtration apparatus and method

US11285344B2 · kind B2 · utility

1Cited by

4References

15Claims

0Family size

Inventors

Paul Key · Portola Valley, US
Michael Fineberg · Tempe, US

Key dates

Filing date	Nov 16, 2018
Grant date	Mar 29, 2022
Priority date	—
Expiry date	Dec 23, 2038

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2279/40
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A wearable air filtration apparatus configured to fit beneath a full-face helmet is disclosed. The apparatus includes a front plate including an output aperture and at least one input aperture, the input and output apertures arranged to be substantially front facing when the apparatus is worn by a user. An air filter is arranged behind the front plate and positioned to filter air moving from in front of the apparatus toward the face of a user wearing the apparatus. A valve plate is located behind the filter, the valve plate including an output check valve in fluid communication with the output aperture and at least one input check valve in fluid communication with the at least one input aperture.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.