Polaris. has been granted a patent for a continuously variable transmission (CVT) designed for vehicles. The CVT features a unique air supply system with non-recycled air and a specialized housing structure, enhancing its operational efficiency and performance through innovative design elements, including fins on the driven clutch. GlobalData’s report on Polaris gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Polaris, In-wheel motor EV suspensions was a key innovation area identified from patents. Polaris's grant share as of July 2024 was 62%. Grant share is based on the ratio of number of grants to total number of patents.
Continuously variable transmission with non-recycled air supply
The patent US12072018B2 describes a continuously variable transmission (CVT) designed for vehicles, featuring a unique configuration of drive and driven clutches housed within a specialized casing. The CVT includes a drive clutch and a driven clutch, each comprising moveable and stationary sheaves. The housing encompasses both clutches and is designed with an inner cover and an outer cover that are removably coupled. Notably, the housing's design facilitates airflow, with a radial distance between the inner cover's peripheral surface and the driven clutch's outer surface increasing in the direction of airflow. The driven clutch's stationary sheave is characterized by a bell portion with longitudinal fins and an outer sheave face with radially extending fins, where the lengths of these fins vary.
Additionally, the patent outlines specific airflow dynamics within the CVT. It specifies that the housing includes multiple volutes to direct air between the drive and driven clutches, optimizing cooling and performance. The design incorporates a single air inlet and outlet, ensuring efficient airflow from the driven clutch to the drive clutch. The inner cover features a channel system that facilitates this airflow, while a diverter plate further defines the air channels. The claims emphasize the importance of the radial distances and the configuration of the fins in enhancing the transmission's efficiency and performance, making this CVT a notable advancement in vehicle transmission technology.
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