High surface area chemical/biological air-purifying filter
US7861719B1 · kind B1 · utility
9Cited by
4References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2006 |
| Grant date | Jan 4, 2011 |
| Priority date | — |
| Expiry date | Aug 7, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2275/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Airflow is improved for multi-agent chemical biological air-purifying apparatus by providing a filter module that has multiple filter elements contained within a substantially sealed housing. The housing secures the filter elements in a spaced relation such that the top and bottom faces of each filter element are exposed to the flow of air and provides an air path within the housing adapted to channel air through the multiple filter elements in a parallel flow. The filter module may be made from a flexible and resilient plastic material and may be contoured to conform to the shape of a helmet liner or similar headgear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.