Filter for respirator mask or other filtering applications
AssigneeAirboss Engineered Products Inc.
InventorsJean-Luc LEMYRE, Jennifer ROMERO
Life of this patent
Estimating the term…
Abstract
A filter for a respirator mask or other filtering applications, in which the filter comprises a filtering medium which may enhance performance of the filter, such as by providing enhanced filtration and/or lower resistance to airflow (e.g., lower respiratory resistance for a wearer of the respirator mask). The filtering medium may comprise active particles (e.g., activated carbon) that are derived from a polymeric precursor (e.g., polyvinylidene dichloride (PVDC)), impregnated with additives (e.g., metals and triethylenediamine (TEDA)), substantially uniform in size (e.g., monodispersed), and/or loose.
Claims20
A protective mask, comprising:
- a lens configured to allow a user of the mask to see therethrough;
- a sealing portion configured to at least partially seal an inner volume of the mask from an ambient atmosphere;
- a filter interface configured to removably attach a filter to the mask, such that an outside gas can travel through the filter and the filter interface into the inner volume of the mask,
- wherein, the filter includes a container, a first screen [mechanical filter] disposed between an interior of the container and the outside gas, a second screen [mechanical filter] disposed between the interior of the container and the inner volume of the mask, and a filtering medium disposed in the container, said filtering medium comprising active particles that are loose, substantially uniform in size, and derived from a polymeric precursor.
A filter configured for use with a protective mask, said filter comprising:
- a container including an interface for removably securing the filter to the exterior of the protective mask;
- a first screen [mechanical filter] disposed between an interior of the container and atmosphere;
- a second screen [mechanical filter] disposed between an interior of the container and an inner volume of the protective mask;
- a filtering medium disposed in the container, said filtering medium comprising active particles that are loose, substantially uniform in size, and derived from a polymeric precursor.
A process for making a filter, comprising:
- providing a container including a filter interface for removably securing the filter to the exterior of the protective mask;
- providing a first screen disposed between an interior of the container and a gas intake of the filter;
- providing a second screen disposed between an interior of the container and the filter interface;
- disposing a filtering medium in the container, said filtering medium comprising active particles that are loose, substantially uniform in size, and derived from a polymeric precursor.
Dependencies are inferred from the claim text.