REE Automotive has been granted a patent for a dual-axle vehicle corner assembly. The assembly includes a sub-frame, two arms connected to the sub-frame, and a suspension system with a piston assembly. The piston assembly can adjust the distance between the axle axes of the two wheels. The patent also describes the parallel alignment of the arm and axle axes, as well as the presence of a housing, pistons, and a spring within the piston assembly. GlobalData’s report on REE Automotive gives a 360-degree view of the company including its patenting strategy. Buy the report here.

According to GlobalData’s company profile on REE Automotive, in-wheel motor EV suspensions was a key innovation area identified from patents. REE Automotive's grant share as of June 2023 was 1%. Grant share is based on the ratio of number of grants to total number of patents.

Patent granted for a dual-axle vehicle corner assembly

Source: United States Patent and Trademark Office (USPTO). Credit: REE Automotive Ltd.

A recently granted patent (Publication Number: US11685208B2) describes a dual-axle vehicle corner assembly with a unique suspension system. The assembly includes a sub-frame and two arms that are rotatable with respect to the sub-frame. Each arm has an axle axis around which a wheel rotates when connected. The suspension system consists of a piston assembly that connects the two arms and can control the distance between the axle axes.

The piston assembly includes a housing, two pistons, and a spring. The pistons are connected to the arms and positioned within the housing, forming fluid chambers. The spring is positioned between the pistons. By increasing or decreasing the length of the piston assembly, the suspension system can control the height of the sub-frame relative to the ground surface when the assembly is attached to a vehicle platform.

The patent also mentions that the first arm axis can coincide with the second arm axis, and the piston assembly, arms, and sub-frame can be positioned on the same side or opposing sides of the sub-frame. Additionally, the suspension system can include a fluid pump and a controller to control the spring rate and the distance between the axle axes.

Other variations of the assembly described in the patent include the use of connectors to connect the arms to the wheels, a drivetrain motor to rotate the connectors, and the inclusion of dampers to provide additional control. The suspension system can also include accumulators with pressurized gas or liquid pumps to control the length of the piston assembly and the distance between the axle axes.

Overall, this patent describes a dual-axle vehicle corner assembly with a unique suspension system that allows for precise control of the distance between the axle axes. This technology has the potential to improve the stability and performance of vehicles, particularly in off-road or challenging terrain conditions.

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