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US 11,376,537 B2Granted
Framed air filter with skip-scored sidewall junction
Assignee3M Innovation Properties Company
InventorsFiona E. Menken, Brenda K. Balderas, Dennis M. Glass, Michael L. Munson, Mark A. Sanocki
Life of this patent
Estimating the term…
Abstract
A framed air filter that includes air filter media and a frame with four frame portions. At least one frame portion includes an inner sidewall and an outer sidewall that meet at a sidewall junction. The sidewall junction extends along a score line that includes at least one cut-scored segment and one crush-scored segment.
Claims20
A framed air filter, comprising:
- an air filter media comprising an at least generally rectangular perimeter with four major elongate edges;
- and, a four-cornered frame comprising four elongate frame portions, each elongate frame portion being mounted on one of the four major elongate edges of the filter media and with pairs of neighboring frame portions meeting to form one corner of the four corners of the frame, wherein each of the four elongate frame portions comprises an elongate inner sidewall and an elongate outer sidewall that meet at a sidewall junction that extends along a sidewall fold line, and wherein the sidewall fold line follows a sidewall score line that comprises at least one cut-scored segment and at least one crush-scored segment that are arranged in series along the sidewall score line.
Dependencies are inferred from the claim text.