# US 10,767,608 B2 · Air intake assembly for motorcycle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,767,608 B2 - Document ID: US10767608B2 - Status: Granted - Kind: B2 - Application number: 16/220,639 - Filed: 2018-12-14 - Published: 2019-04-25 - Granted: 2020-09-08 - Earliest claimed: 2017-09-21 - Assignees: Harley-Davidson Motor Company Group, Inc. - Applicants: Harley-Davidson Motor Company Group, LLC - Inventors: Mark Dane; Bob Iverson - Web page: https://patentgrep.com/patent/US10767608B2 ## CPC - F02M 35/048: {Arranging or mounting on or with respect to engines or vehicle bodies} - F02M 35/0204: {for connecting or joining to other devices, e.g. pipes} - F02M 35/0212: {Multiple cleaners} - F02M 35/02433: {Special alignment with respect to the air intake flow, e.g. angled or in longitudinal flow direction} - F02M 35/10013: {Means upstream of the air filter; Connection to the ambient air} - F02M 35/10262: {Flow guides, obstructions, deflectors or the like (for generating a charge motion in the cylinder F02B31/00; for re-atomising condensed fuel or homogenising fuel-air mixture F02M29/00)} - F02M 35/162: {Motorcycles; All-terrain vehicles, e.g. quads, snowmobiles; Small vehicles, e.g. forklifts} - Y02T 10/12: Improving ICE efficiencies - F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract An air intake assembly includes a filter element and an intake conduit having a first end supporting the filter element. The first end forms an inlet opening having a first shape and a second end being adapted for attachment to an engine. The second end forms an outlet opening having a second shape different than the first shape of the inlet opening. The intake conduit also includes a body having an inner wall defining a passageway coupling the inlet and outlet openings. The inner wall has a maximum lateral dimension measured transverse to a central axis of the passageway within a plane that interests both the inlet and outlet openings. The maximum lateral dimension is located adjacent the outlet opening. ## Claims ### Claim 1 An air intake assembly comprising: a filter element; and an intake conduit including a first end supporting the filter element, the first end forming an inlet opening having a first shape, a second end being adapted for attachment to an engine, the second end forming an outlet opening having a second shape different than the first shape of the inlet opening, and a body having an inner wall defining a passageway coupling the inlet and outlet openings, the inner wall having a maximum lateral dimension measured transverse to a central axis of the passageway within a plane that interests both the inlet and outlet openings, the maximum lateral dimension located adjacent the outlet opening. ### Claim 2 (depends on 1) The air intake assembly of claim 1, wherein the second end includes a surface transverse to the central axis, and wherein the maximum lateral dimension is parallel to the surface. ### Claim 3 (depends on 1) The air intake assembly of claim 1, wherein the body defines a first height transverse to both the plane and the central axis at an axial location adjacent the inlet opening, wherein the body further defines a second height transverse to both the plane and the central axis at an axial location adjacent the outlet opening, and wherein the first height is greater than the second height. ### Claim 4 (depends on 3) The air intake assembly of claim 3, wherein the central axis defines a curve such that the body includes an outer surface having an apex positioned between the first and second ends within the plane, and wherein an apex lateral dimension of the body is taken transverse to the central axis to intersect with the apex, and wherein the apex lateral dimension is less than the maximum lateral dimension. ### Claim 5 (depends on 4) The air intake assembly of claim 4, wherein the body defines a third height transverse to both the plane and the central axis at an axial location of the apex lateral dimension, and wherein the third height is greater than the second height. ### Claim 6 (depends on 1) The air intake assembly of claim 1, wherein the central axis defines a curve such that the body includes an outer surface having an apex positioned between the first and second ends within the plane, and wherein a distance between the apex and a planar surface of the second end, transverse to the planar surface, is less than 2.90 inches. ### Claim 7 (depends on 1) The air intake assembly of claim 1, wherein the inlet opening is non-circular, and wherein the outlet opening is circular. ### Claim 8 (depends on 7) The air intake assembly of claim 7, wherein the inlet opening is ellipse-shaped. ### Claim 9 (depends on 1) The air intake assembly of claim 1, wherein the inlet opening defines a first area and the outlet opening defines a second area, and wherein the first area is within 20 percent of the second area. ### Claim 10 (depends on 1) The air intake assembly of claim 1, wherein the filter element is a first filter element of an air filter subassembly that further includes a second filter element, and wherein the second filter element extends into the first filter element. ### Claim 11 (depends on 10) The air intake assembly of claim 10, wherein front ends of the first and second filter elements are coupled to an end collar, and wherein the first filter element tapers from a rear end of the first filter element to the end collar, and wherein the second filter element tapers from the end collar to a rear end of the second filter element. ### Claim 12 (depends on 1) The air intake assembly of claim 1, further comprising a plurality of fasteners extending through the first end of the intake conduit to engage a mount provided at a base of the filter element. ### Claim 13 An air intake assembly comprising: an air filter subassembly having a base end adapted to couple to an intake conduit, the air filter subassembly including a first filter element having a front end and a rear end, and a velocity stack coupled to the rear end of the first filter element to inhibit relative movement between the velocity stack and the first filter element, the velocity stack including an interior surface having an inlet opening and a non-circular outlet opening, the interior surface tapering from the inlet opening to the outlet opening. ### Claim 14 (depends on 13) The air intake assembly of claim 13, wherein the outlet opening is ellipse-shaped. ### Claim 15 (depends on 13) The air intake assembly of claim 13, wherein the air filter subassembly includes a groove surrounding the outlet opening of the velocity stack, and wherein a gasket is positioned in the groove. ### Claim 16 (depends on 13) The air intake assembly of claim 13, wherein a surface of the outlet opening is configured to mate flush with a surface of the intake conduit forming an inlet opening of a flow path of the intake conduit. ### Claim 17 (depends on 13) The air intake assembly of claim 13, wherein the first filter element is coupled between the velocity stack and an end collar of the air filter subassembly, and wherein the air filter subassembly includes a second filter element coupled to the end collar, and wherein the second filter element extends into the first filter element. ### Claim 18 (depends on 17) The air intake assembly of claim 17, wherein the air filter subassembly includes an air-impermeable cap coupled to a rear end of the second filter element, wherein the first filter element tapers from the velocity stack to the end collar, and wherein the second filter element tapers from the end collar to the air-impermeable cap. ### Claim 19 (depends on 13) The air intake assembly of claim 13, wherein a portion of the air filter subassembly forms a mount including a plurality of threaded holes, and wherein the plurality of threaded holes are configured to receive a plurality of fasteners to couple the air filter subassembly to the intake conduit.