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US 6,884,274 B2Granted
High flow, one piece automotive air filter
AssigneeAdvanced Flow Engineering, Inc.
InventorsShahriar Nick Niakan, Stuart T. Miyagishima, Christopher C. Beau, Oscar Morales
Life of this patent
Estimating the term…
Abstract
Air filter with a sidewall and inverted cone cap sections; a beveled crown unifying the sidewall with the cap to form a one-piece filter; a seat on the bottom of the wall section with seals for contact with a support; and a flange affixed to the cap to adjust contact with a support surface. The filter media includes four-layer oleophilic cotton mesh layers supported between two structural mesh layers, with an efficacious amount of oil to increase particle trapping.
Claims31
A fluid filter, comprising:
- a. a sidewall section shaped as a right elliptical cylinder disposed about an axis and having a central cavity therein, the sidewall section having an upper sidewall section and a lower sidewall section, a base of the sidewall section being substantially perpendicular to the axis, the sidewall section having an elliptical eccentricity of between about less than 1.0 to about 0.0;
- b. a cap section shaped as a right elliptical cone frustum having a base section and an apex section, the cap section being invertedly disposed within the central cavity about the axis, the cap section having an elliptical eccentricity substantially equal to the elliptical eccentricity of the sidewall section;
- and
- c. a crown sealably conjoining the upper sidewall section to the base section, the crown having a land affixed to the upper sidewall section and a bevel affixed to the base section.
1 more element
An air filter for an internal combustion engine, comprising:
- a. a sidewall section shaped as a right elliptical cylinder disposed about an axis and having a central cavity therein, the sidewall section having an upper sidewall section and a lower sidewall section, a base of the sidewall section being substantially perpendicular to the axis, the sidewall section having an elliptical eccentricity of between about less than 1.0 to about 0.0;
- b. a cap section shaped as a right elliptical cone frustum having a base section and an apex section, the cap section being invertedly disposed within the central cavity about the axis, the cap section having an elliptical eccentricity substantially equal to the elliptical eccentricity of the sidewall section;
- and
- c. a crown sealably conjoining the upper sidewall section to the base section, the crown having a land affixed to the upper sidewall section and a bevel affixed to the base section;
- d. a seat with a top seat surface and a bottom seat surface, the top seat surface affixed to the lower sidewall section, and the bottom seat surface having a plurality of circumferential mating seals adapted to sealably contact a support surface;
- and
- e. a pliant flange affixed to the apex section and disposed around the axis, the pliant flange adapted to adjust sealing contact between the air filter and the support surface;
- wherein at least one of the sidewall section and the cap section comprises a pleated natural fiber filter media, the natural fiber therein being oleophilic, and further comprising an efficacious amount of oil disposed in the pleated natural fiber filter media, the oil wetting natural fibers, thereby increasing particle trapping by the pleated natural fiber filter media.
5 more elements
An air filter, comprising:
- a. a cylinder of filter media, wherein the cylinder includes a cylinder top, a cylinder bottom, and a cylinder cavity;
- and
- b. a cap of filter media, wherein the cap is sized and dimensioned to fit in the cylinder cavity and to substantially cover the cylinder top, the cap being fixed to the cylinder top and having a concave upper surface and a central opening, the central opening in the cap being adapted to receive a mounting post.
An air filter comprising:
- a. an engine air intake assembly having a mounting post and a filter pan attached thereto;
- b. a pleated filter media cylinder, the cylinder having a cylinder top, a cylinder bottom, and a cylinder cavity;
- c. a pleated filter media cap, the cap being attached to the cylinder top, the cap being sized and dimensioned to fit into the cylinder cavity and to substantially cover the cylinder cavity at the cylinder top, the cap having a concave upper surface and a central opening, and the central opening being adapted to receive the mounting post;
- d. a beveled crown attached to and unifying the cylinder and the cap;
- e. a seat on the cylinder bottom, the seat forming a seal in contact with the filter pan;
- f. a flange attached to the cap around the central opening;
- and
- g. a tensioner that releasably attaches the filter to the engine air intake assembly and seals the central opening;
- wherein the pleated filter media comprises four oleophilic cotton mesh layers supported between two structural mesh layers, and wherein the cotton mesh layers are oil-wetted using an efficacious amount of oil.
6 more elements
Dependencies are inferred from the claim text.