Nexteer Automotive Group has patented a method for making a worm gear with individual lugs for uniform material flow. The patent also covers an electric power steering system with a unique worm gear design for efficient operation. GlobalData’s report on Nexteer Automotive Group 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 Nexteer Automotive Group, was a key innovation area identified from patents. Nexteer Automotive Group's grant share as of April 2024 was 57%. Grant share is based on the ratio of number of grants to total number of patents.
Electric power steering system with worm gear having lugs
A recently granted patent (Publication Number: US11970216B2) discloses an electric power steering system that includes a steering shaft connected to a handwheel at one end and a rack and pinion steering mechanism at the opposite end. The system features a steering assist unit with an electric motor controlled by a controller, driving a worm and a worm gear interposed between the worm and the steering shaft. The unique design of the worm gear includes a disk with individual lugs on its faces, a ring overlaying a portion of the disk, and gear teeth for meshing with the worm teeth. The patent claims also detail the formation of the worm gear through various processes like stamping, forging, and machining, as well as the use of a polymeric ring and a concentric opening in the disk.
Furthermore, the patent describes an alternative embodiment of the electric power steering system with a single, integrally formed disk featuring individual lugs on both faces, a ring overlaying a portion of the disk, and gear teeth for meshing with the worm teeth. This configuration ensures that the lugs on one face do not overlap with those on the opposite face, providing a seamless and continuous outer circumferential edge with a constant diameter. The system's design aims to enhance the efficiency and performance of electric power steering systems by optimizing the interaction between the worm gear and the steering shaft, ultimately improving the overall steering experience for users.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
