Patent ID: 8394166

Claim:
An air filter cartridge comprising: (a) first and second, opposite, ends; (i) the first end having an air flow exit aperture therethrough; (b) a conical extension of filter media extending between the first and second ends and around a central cartridge axis; (c) a first, open, end cap adjacent the first end of the filter cartridge; (i) the media being embedded in the first, open, end cap; (d) a housing seal including a seal surface directed radially with respect to the cartridge central axis, to form a removable seal with a portion of an air cleaner, in use; and, (e) a second, closed, end cap adjacent the second end of the filter cartridge; (i) the second end cap including a central projection extending inwardly of the filter cartridge a distance of at least 15 mm; and, (ii) the central projection including an inner recess open toward the first end cap and extending in an axial direction away from the first end cap.