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Structure and yarn sensor for fabric

United States Patent

*** EXPIRED ***
5,825,501
October 20, 1998
View the Complete Patent at the US Patent & Trademark Office
Y-12 National Security Complex - Visit the Technology Transfer Website
A structure and yarn sensor for fabric directly determines pick density in a fabric thereby allowing fabric length and velocity to be calculated from a count of the picks made by the sensor over known time intervals. The structure and yarn sensor is also capable of detecting full length woven defects and fabric. As a result, an inexpensive on-line pick (or course) density measurement can be performed which allows a loom or knitting machine to be adjusted by either manual or automatic means to maintain closer fiber density tolerances. Such a sensor apparatus dramatically reduces fabric production costs and significantly improves fabric consistency and quality for woven or knitted fabric.
Mee; David K. (Knoxville, TN), Allgood; Glenn O. (Powell, TN), Mooney; Larry R. (Knoxville, TN), Duncan; Michael G. (Clinton, TN), Turner; John C. (Clinton, TN), Treece; Dale A. (Knoxville, TN)
Lockheed Martin Energy Systems, Inc. (Oak Ridge, TN)
08/ 818,157
March 14, 1997
The United States Government has rights in this invention pursuant to Contract No. DE-AC05-84OR21400 between the United States Department of Energy and Lockheed Martin Energy Systems, Inc. The invention arose within work done under CRADA No. ORNL 94-0253.