Abstract: An air filter includes a frame member and a deep-pleated media pack positioned within the frame member of the air filter. The frame member includes a gasket positioned around the perimeter of the frame member. The air filter is configured to permit air to enter from one end and pass through the filter media to a second end whereby particulate is removed from the airstream.

Abstract: An air filter includes a frame member and a deep-pleated media pack positioned within the frame member of the air filter. The frame member includes a gasket positioned around the perimeter of the frame member. The air filter is configured to permit air to enter from one end and pass through the filter media to a second end whereby particulate is removed from the airstream.

Abstract: A filter assembly has a housing open at one end, with an annular filter media/core assembly disposed in the housing. An end plate having at least two inlet openings and an outlet opening is disposed in the open end of the housing. The end plate is affixed to a lid which is secured to the end of the housing. A combination valve is retained between the filter media/core assembly and the end plate. The combination valve has a first portion that cooperates with the first inlet opening in the end plate and a second portion cooperating with the second inlet opening. In use fluid will pass through the first inlet opening, the filter media/core assembly and be discharged from the housing through the outlet opening.

Abstract: The improved in-line air filter apparatus of the present invention includes an air filter housing disposed in-line on the engine air intake hose of an internal combustion engine, with a tubular air filter element longitudinally disposed therein and having a closed axial end of such tubular air filter element disposed upstream of an open axial downstream end, with the open tubular end having a size and shape substantially congruent with the size and shape of the engine air intake hose of the internal combustion engine for minimizing the turbulence of the filtered air supplied thereto, and with the closed upstream tubular end having an annular shaped air inlet portion surrounding such closed upstream tubular end for directing air longitudinally and inwardly through the body of the tubular air filter element.