Dorman Products. has filed a patent for a portal gear box assembly designed for off-road vehicles. The assembly includes input and output gear subassemblies connected by idler gears, with a removable adaptor allowing for adjustment of the transmission ratio. GlobalData’s report on Dorman Products 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 Dorman Products, was a key innovation area identified from patents. Dorman Products's grant share as of January 2024 was 79%. Grant share is based on the ratio of number of grants to total number of patents.

Portal gear box assembly for off-road vehicle

Source: United States Patent and Trademark Office (USPTO). Credit: Dorman Products Inc

A newly filed patent (Publication Number: US20240025247A1) describes a gear box assembly for vehicles that allows for adjustable transmission ratios. The assembly includes a housing with input, output, and idler gear indents, along with an input shaft, output shaft, and removable adaptor that can be positioned in multiple locations within the idler-gear indent. By changing the position of the removable adaptor, the idler gear can be adjusted relative to the input and output shafts, enabling the use of gears with different diameters or swapping gear positions to alter the transmission ratio.

Furthermore, the patent also outlines a method for changing the transmission ratio of the gear box assembly, involving the use of the removable adaptor and different gears. By moving the removable adaptor to adjust the position of the idler gear, the transmission ratio between the input and output shafts can be modified. The method also includes steps for replacing gears, positioning gears on different shafts, and moving the idler gear to the input shaft. Additionally, a kit is proposed for providing a gear box with an adjustable transmission ratio, including multiple gears, idler gears, and the necessary components for adjusting the gear positions to achieve the desired transmission ratio.

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