Yarn entanglement strength tester

US9581531B2 · kind B2 · utility

Assignee

• Lawson Hemphill, Inc. · US

Inventors

• Dean A. Ross · Barrington, US
• Filiz Avsar · Fall River, US
• Kendall W. Gordon, Jr. · South Kingstown, US
• Steven J. Leary · Barnegat, US

Key dates

• Filing date: Jan 31, 2012
• Grant date: Feb 28, 2017
• Expiry date: Aug 12, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2203/028
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A yarn entanglement strength tester includes first and second rolls that apply incrementally increasing elongation levels on a yarn in order to remove entanglements from the yarn. The yarn entanglement strength tester also includes a third roll, where the second and third rolls apply a constant tension on the yarn which enables optimum diameter measurements of the yarn by a camera. The camera captures images of diameters of the yarn after each of the incrementally increasing elongation levels is applied to the yarn. The yarn entanglement strength tester further includes a computing device that controls operation of the camera and the first, second, and third rolls, and determines an entanglement strength of the yarn based on the captured images of the diameters of the yarn after each of the incrementally increasing elongation levels is applied to the yarn.