Pleated Filter Media

Abstract

A filter (60) element includes a base tube (64) and a blank (30) of filter media (32). The base tube (64) has a first end and a second end. The blank (30) is folded into a plurality of triangles (38). Each triangle is positioned adjacent to another of the plurality of triangles (38) to form a series of triangular pleats (40) to form the pleated filter media (32). Pleated filter media (32) is disposed about the center tube (64). The cross-sectional area of ​​the pleated filter media (32) near each of the first and second ends is greater than the cross-sectional area of ​​the pleated filter media (32) at a point between the first and second ends area.

Description

technical field [0001] The present invention relates generally to filter media, and more particularly to a pleating pattern and method for making a shaped filter media. Background technique [0002] Filter elements are known for filtering particulates or other contaminants from fluids (eg, air, fuel, coolant, etc.). In general, the large surface area of ​​the filter media in a filter element facilitates efficient filtration of fluids. To provide such a large surface area, filter media is often pleated. Additionally, conventional filter housings tend to be relatively large. To accommodate such filter housings, the filter housings are often located outside the engine compartment of conventional earth-moving equipment. [0003] However, having the filter housing outside the engine compartment is problematic for various reasons, for example, the filter housing must be made stronger, the filter housing may be exposed to a dirtier environment, and the location between the filte...

AI Technical Summary

Problems solved by technology

Thus, conventional pleated filters can become clogged when assigned to filter particles outside the desired particle size range

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