Patent ID: 6336946
Filing Date: 2002-01-08
Classification: B01D,F02M

Abstract:
A configuration for an air filter wherein the air filter has an air filter element with a web of filter material folded into a plurality of pleats, extending laterally from a center plane, the air filter element having an upstream side facing toward an incoming airstream and a downstream side facing away from the incoming airstream, the pleats leaving folds forming peaks of different heights with respect to the center plane of the pleats, the improvement comprising:the pleats consisting of relatively high peaks with respect to the center plane and relatively low peaks with respect to the center plane, the high and low peaks being on both the upstream side of the filter element and the downstream side of the filter element, with the high peaks and low peaks alternating with one another so that each high peak is between two low peaks and each low peak is between two high peaks.