# US 12,595,005 B2 · Modular and scalable active rear diffusor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,595,005 B2 - Document ID: US12595005B2 - Status: Granted - Kind: B2 - Application number: 18/028,144 - Filed: 2021-10-13 - Published: 2023-11-16 - Granted: 2026-04-07 - Earliest claimed: 2020-10-13 - Assignees: Magna Exteriors Inc. - Applicants: Magna Exteriors Inc. - Inventors: Braendon R. Lindberg; Martin Robert Matthews - Web page: https://patentgrep.com/patent/US12595005B2 ## CPC - B62D 35/007: {Rear spoilers (B62D35/001 takes precedence)} - B62D 37/02: by aerodynamic means - B62D 35/02: Streamlining the undersurfaces {(B62D35/005, B62D35/007, B62D35/008 take precedence)} - Y02T 10/82: Elements for improving aerodynamics - Y02T 10/88: Optimized components or subsystems, e.g. lighting, actively controlled glasses - B62D: MOTOR VEHICLES; TRAILERS (steering, or guiding on a desired track, of agricultural machines or implements A01B69/00; wheels, castors, axles, increasing wheel adhesion B60B; vehicle tyres, tyre inflation or tyre changing B60C; connections between vehicles of a train or the like B60D; vehicles for use on rail and road, amphibious or convertible vehicles B60F; suspension arrangements B60G; heating, cooling, ventilating or other air treating devices B60H; windows, windscreens, non-fixed roofs, doors or similar devices, protective coverings for vehicles not in use B60J; propulsion plant arrangements, auxiliary drives, transmissions, controls, instrumentation or dashboards B60K; electric equipment or propulsion of electrically-propelled vehicles B60L; power supply for electrically-propelled vehicles B60M; passenger accommodation not otherwise provided for B60N; adaptations for load transportation or to carry special loads or objects B60P; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q; vehicles, vehicle fittings or vehicle parts not otherwise provided for B60R; servicing, cleaning, repairing, supporting, lifting, or manoeuvring, not otherwise provided for, B60S; brake arrangements, brake control systems or parts thereof B60T; air-cushion vehicles B60V; motor-cycles, accessories therefor B62J, B62K; testing of vehicles G01M) - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract An active rear diffuser for a rear portion of a vehicle. The rear diffuser assembly is formed from a set of components that are uniform across all vehicle platforms, with some of the components being scalable and allowing them to be adjusted to an appropriate length without any retooling. ## Claims ### Claim 1 An active rear diffuser assembly comprising: a base produced by extrusion, wherein the base has at least one closed channel extending through the base; at least one rail; at least one carrier connected to the at least one base and the at least one rail, wherein the at least one carrier and base move on the at least one rail between a stowed position and an extended position; at least one actuator connected to the at least one carrier for providing power to move the at least one carrier on the at least one rail; and a cover connected to the base, wherein the cover moves between the stowed position and the extended position. ### Claim 2 (depends on 1) The active rear diffuser assembly of claim 1 wherein the cover has an exterior surface with a Class A finish surface. ### Claim 3 (depends on 1) The active rear diffuser assembly of claim 1 further comprising: a rear fascia of a vehicle having an external surface and an inside surface opposite the external surface, wherein the at least one rail, the at least one carrier and the at least one actuator are positioned behind the rear fascia and adjacent the inside surface of the rear fascia, and the base and the cover are extendable past the external surface of the rear fascia when the base and the cover are moved to the extended position. ### Claim 4 (depends on 3) The active rear diffuser assembly of claim 3 wherein the rear fascia further comprises an aperture extending from the external surface of the rear fascia to the inside surface of the rear fascia, wherein the cover is configured to slide through the aperture between the stowed position and the extended position, wherein the exterior surface of the cover is adjacent the exterior surface of the rear fascia when the cover is in the stowed position. ### Claim 5 (depends on 1) The active rear diffuser assembly of claim 1 further comprising: at least one cover support connected to the base and the cover for strengthening the cover. ### Claim 6 (depends on 5) The active rear diffuser assembly of claim 5 further comprising an open channel formed in the base, wherein the open channel has a side opening; wherein each of the at least one cover support has a connection surface with a stem extending therefrom and terminating at a knob, wherein the knob is positioned within the open channel and the stem extends through the side opening thereby connecting the at least one cover support to the base. ### Claim 7 (depends on 5) The active rear diffuser assembly of claim 5 wherein the at least one cover support has a bottom surface and at least one angled surface extending from the bottom surface. ### Claim 8 (depends on 1) The active rear diffuser of claim 1 further comprising: a track formed on the at least one rail and a slidable connection between the track and the at least one carrier; a retainer connected to the at least one carrier and the at least one rail, wherein the retainer has at least one post slidably positioned in the track allowing the retainer to slide with the at least one carrier along the track between the stowed position and the extended position. ### Claim 9 (depends on 8) The active rear diffuser assembly of claim 8 further comprising: a channel portion formed on the at least one carrier for receiving at least a portion of the at least one rail when the at least one carrier is moved to the stowed position. ### Claim 10 (depends on 1) The active rear diffuser assembly of claim 1 further comprising: a link connected between the at least one actuator and the at least one carrier, wherein the at least one actuator causes the link to pivot and move the at least one carrier along the at least one rail. ### Claim 11 (depends on 10) The active rear diffuser assembly of claim 10 further comprising: at least one bracket, wherein the at least one actuator is connected to the at least one bracket; wherein the link includes a driven link pivotally connected at a first end to the at least one bracket and the at least one actuator, and a moveable link having a first end pivotally connected to a second end of the driven link, and a second end of the moveable link pivotally connected to the at least one carrier, wherein activation of the at least one actuator in a first direction to cause the moveable link to push the at least one carrier and the cover to the extended position and activation of the at least one actuator in a second direction causes the moveable link to pull the at least one carrier and cover to the stowed position. ### Claim 12 (depends on 1) The active rear diffuser assembly of claim 1 wherein an aerodynamic support connects below a rear bumper of the vehicle. ### Claim 13 An active rear diffuser assembly comprising: a base produced by extrusion, wherein the base has at least one closed channel extending through the base; at least one rail; at least one carrier connected to the at least one base and the at least one rail, wherein the at least one carrier and base move on the at least one rail between a stowed position and an extended position, and a cover connected to the base, wherein the cover moves between the stowed position and the extended position. ### Claim 14 (depends on 13) The active rear diffuser assembly of claim 13 wherein the cover has an exterior surface with a Class A finish surface. ### Claim 15 (depends on 13) The active rear diffuser assembly of claim 13 further comprising: a rear fascia of a vehicle having an external surface and an inside surface opposite the external surface, wherein the at least one rail and the at least one carrier are positioned behind the rear fascia and adjacent the inside surface of the rear fascia, and the base and the cover are extendable past the external surface of the rear fascia when the base and the cover are moved to the extended position. ### Claim 16 (depends on 15) The active rear diffuser assembly of claim 15 wherein the rear fascia further comprises an aperture extending from the external surface of the rear fascia to the inside surface of the rear fascia, wherein the cover is configured to slide through the aperture between the stowed position and the extended position, wherein the exterior surface of the cover is adjacent the exterior surface of the rear fascia when the cover is in the stowed position. ### Claim 17 (depends on 13) The active rear diffuser assembly of claim 13 further comprising: at least one cover support connected to the base and the cover for strengthening the cover. ### Claim 18 (depends on 17) The active rear diffuser assembly of claim 17 further comprising an open channel formed in the base, wherein the open channel has a side opening; wherein the at least one cover support has a connection surface with a stem extending therefrom and terminating at a knob, wherein the knob is positioned within the open channel and the stem extends through the side opening thereby connecting the at least one cover support to the base. ### Claim 19 (depends on 17) The active rear diffuser assembly of claim 17 wherein the at least one cover support has a bottom surface and at least one angled surface extending from the bottom surface. ### Claim 20 (depends on 13) The active rear diffuser of claim 13 further comprising: a track formed on the at least one rail and a slidable connection between the track and the at least one carrier; a retainer connected to the at least one carrier and the at least one rail, wherein the retainer has at least one post slidably positioned in the track allowing the retainer to slide with the at least one carrier along the track between the stowed position and the extended position. ### Claim 21 (depends on 20) The active rear diffuser assembly of claim 20 further comprising: a channel portion formed on the at least one carrier for receiving at least a portion of the at least one rail when the at least one carrier is moved to the stowed position. ### Claim 22 (depends on 13) The active rear diffuser assembly of claim 13 wherein an aerodynamic support connects below a rear bumper of the vehicle.