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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-12601390-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-2026-000000878

All-gear speed controller and continuously variable transmission (CVT) using harmonic helical gears

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Classification
Industrial Motion & Power Transmission › Rotary Motion
Original source
US-12601390-B1, the United States Patent and Trademark Office, 14 April 2026
Document SHA-256
1c4b7b2f0861698e77b2f5c15e7c63c2cb637c3814ec366bb6a0950d5d1ef5bd

Abstract

A heavy-duty, all-gear transmission using helical gears is disclosed as a CVT or IVT completely devoid of any frictional or hydraulic elements. By longitudinally moving the input member of a pair of rotating helical gears, and by varying the direction and extent of any superimposed, longitudinal motion, the rotation of the output member can be varied. When the longitudinal motion is generated with a reciprocating, harmonic mechanism, the speed of the output gear varies in a sinusoidal fashion. This novel mechanism employs the principle of combining two equal outputs with sine wave profiles of opposite phase in a differential to produce an averaged, linear profile. Altering the amplitude of any longitudinal translations results in variations in the final output.

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Citation

OpenTechnical Publication OT-2026-000000878, “All-gear speed controller and continuously variable transmission (CVT) using harmonic helical gears,” published September 15, 2026 at 19:03:31 UTC, https://opentechnical.org/p/OT-2026-000000878.

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