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This is a record of a document published elsewhere, first published by the United States Patent and Trademark Office, as US-12601392-B1, on 14 April 2026. OpenTechnical did not first disclose it. The identifier, hashes and timestamps below record what this library served and when, not when the material became public. View the original.

OT-2026-000000827

Roller screw bidirectional axial preloading structure

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Classification
Industrial Motion & Power Transmission › Rotary Motion
Original source
US-12601392-B1, the United States Patent and Trademark Office, 14 April 2026
Document SHA-256
3c8ee9b50122cdb73c33d4e8d5f15e238afec956e0713abfeb8b4f8b9dabc823

Abstract

A roller screw bidirectional axial preloading structure includes a screw, a nut, and a plurality of first and second rollers arranged around the screw in an interleaved manner and respectively having two ends connected to a first and a second retainer. A first gap is formed between the first retainer and one end of each first roller, and a second gap is formed between the second retainer and the other end of each second roller, such that the first and the second gaps are axially spaced while circumferentially interleaved around the screw. Two elastic elements are located outside the first and second retainers to apply two forces, which are transmitted via the first and second retainers to the first and the second rollers to create two directionally opposite axial preloads on the first and second rollers, giving the roller screw good mechanical power transmission accuracy and stability in motion.

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Citation

OpenTechnical Publication OT-2026-000000827, “Roller screw bidirectional axial preloading structure,” published September 15, 2026 at 19:03:27 UTC, https://opentechnical.org/p/OT-2026-000000827.

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