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US 2022/0054968 A1Published application
Uniformly expandable air filter
Assignee3M Innovative Properties Company
InventorsAndrew R. Fox, Glen O. Gregerson, Bryan L. Gerhardt
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to air filters. More particularly, it relates to air filters including pleated filter media that can be uniformly expanded and contracted. In some embodiments, the air filters are adjustably sized air filter systems. In some embodiments, the air filters can be used in a window opening.
Claims11
An air filter, comprising:
- a filter media assembly that is expandable from a collapsed state to an expanded state and that includes pleated filter media having a plurality of pleats;
- and
- multiple elastic, expandable elements connected to a majority of the pleat tips of the plurality of pleats;
- wherein the multiple elastic, expandable elements consist of a set of extruded elastic filaments that are extruded onto the pleat tips and are thermally bonded thereto and wherein the extruded elastic filaments are all linear and parallel to each other at least when the filter media assembly is in an expanded state,
- wherein the filter media assembly expands from the collapsed state to the expanded state substantially uniformly.
2 more elements
Dependencies are inferred from the claim text.