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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-2026104303-A1, on 16 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-2026-000000511

Rheometer normal force measurement

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Classification
Sensors, Controls & Machine Vision › Force and Pressure Sensing
Original source
US-2026104303-A1, the United States Patent and Trademark Office, 16 April 2026
Document SHA-256
cee122c46c0433999189b5d0183bf65431173b7aebb41414a872e23b780ec0ae

Abstract

A rheometer shaft system includes an output shaft including an axial thrust disk, an upper air bearing surrounding the output shaft located above the axial thrust disk, and a lower air bearing surrounding the output shaft located below the axial thrust disk. An upper gap separates the axial thrust disk of the output shaft and the upper air bearing. A lower gap separates the axial thrust disk of the output shaft and the lower air bearing. An airflow detection system is configured to detect a change in airflow to the upper air bearing and the lower air bearing based on the movement in the axial direction of the output shaft. This change in airflow can be used to monitor normal force applied to the rheometer shaft.

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Citation

OpenTechnical Publication OT-2026-000000511, “Rheometer normal force measurement,” published September 15, 2026 at 19:03:00 UTC, https://opentechnical.org/p/OT-2026-000000511.

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