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US 4,861,359 AGranted
Dual function air filter
AssigneeAllied-Signal Inc.
InventorBarton J. Tettman
Life of this patent
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AssigneeAllied-Signal Inc.
InventorBarton J. Tettman
Estimating the term…
An engine induction air filter element and a positive crankcase ventilation breather element are combined into a single discardable cartridge which is received within an air cleaner housing in a vehicle induction air system. The induction air filter media is comprised of an array of pleats, the tips of which respectfully define the upstream and downstream planes of the filter. A sealant material circumscribes the perimeter of the downstream plane of the induction air filter, and the sealant material on one end thereof includes a projecting portion which supports the breather air filtering media on the one side of the induction air filtering media, with a gap therebetween which receives a partition which is a part of the air cleaner housing. The partition includes a flow restricting aperture, which is closed by the transverse surface of one of the end pleats of the induction air filtering media. Crankcase ventilating air passes through the breather element and then through the aperture, with any oil remaining in the air communicated through breather filter air element being entrained on the transverse surface of the end pleat.
An engine induction air filter element and positive crankcase ventilation breather element combined into a single discardable cartridge for an air cleaner housing installed in an internal combustion engine induction air system, said air filter element comprising a longitudinally extending array of air filter media, said array having edges defining the perimeter of said array, a band of sealing material extending around said perimeter for providing sealing between said air filter element and said housing, said sealing material on at least one edge of said air filter media including a projecting portion projecting beyond said one edge of said air filter media, said breather element comprising breather media having edges, one edge of said breather media engaging the projecting portion of the sealing material on said one edge of the air filter media whereby the sealing material secures the breather media to said air filter media and also seals both the one edge of the air filter media and the one edge of the breather media against said housing, and a band of said sealing material extending around the other edges of said breather media.
An engine induction air filter element and positive crankcase ventilation breather element combined into a single discardable cartridge and a housing for said cartridge, said housing including a shell cooperating with a removable cover to define a cavity receiving said cartridge, induction air inlet and outlet means on said shell and said cover respectively, breather air inlet means on said housing, said cover and said shell each including partitions cooperating to divide the cavity into an induction air section and a breather section, said air filter element comprising a longitudinally extending array of air filter media received in the induction air section of said cavity, said array having edges defining the perimeter of said array, a band of sealing material extending around said perimeter for providing sealing between said air filter element and said housing, said breather element comprising breather media received in the breather section of said cavity and connected to said air filter media through said sealing material, said breather element dividing said breather section into a breather air inlet section communicating with the breather air inlet means and a breather air outlet section, said partitions both sealingly engaging the sealing material, one of said partitions including an aperture communicating the breather air outlet section with the induction air inlet means.
Dependencies are inferred from the claim text.