Nestable framed pleated air filter and method of making
Assignee3M Innovative Properties Company
InventorsAndrew R. Fox, Jonathan M. Lise, John J. Rogers, Stephen M. Sanocki, Kannan Seshadri
Life of this patent
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Abstract
A nestable framed pleated air filter, including a non-self-supporting, compressible, pleated air filter media with a plurality of oppositely-facing pleats and with a plurality of upstream pleat tips and downstream pleat tips and downstream pleat valleys, the pleated air filter media further including a plurality of bridging filaments that are bonded to at least some of the upstream pleat tips. The filter includes a frame with sidewalls that are angled so that the framed pleated air filter is nestable.
Claims17
A nestable framed pleated air filter, comprising:
- a non-self-supporting, compressible, pleated air filter media with an upstream face and a downstream face and a generally rectangular perimeter with four major edges,
- wherein the non-self-supporting, compressible, pleated air filter media comprises a plurality of oppositely-facing pleats with a pleat direction and with a plurality of upstream pleat tips and upstream pleat valleys and downstream pleat tips and downstream pleat valleys, the non-self-supporting, compressible, pleated air filter media further comprising a plurality of bridging filaments that are in discontinuous contact with the upstream face of the non-self-supporting, compressible, pleated air filter media and that are bonded to at least some of the upstream pleat tips;
- and,
- a frame comprising four major frame portions, with each major frame portion being mounted on one of the four major edges of the generally rectangular perimeter of the non-self-supporting, compressible, pleated air filter media,
- wherein each major frame portion comprises a sidewall angle of from about 100 degrees to about 160 degrees and wherein the framed pleated air filter is nestable.
Dependencies are inferred from the claim text.