Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Patent
1998-11-20
2000-02-15
Regan, Maura
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
324663, 702127, G01R 2726
Patent
active
06025727&
ABSTRACT:
A device and method for measuring changes in denier, percent finish-on-yarn, interlacing of polymer fiber, and other fiber properties, in real time as the fiber is being manufactured. The device uses an electrode driven at a discrete voltage to induce a current which changes in amplitude and/or phase in response to changes in denier, finish-on-yarn and/or interlacing of a fiber. A sensing system samples the current and detects changes in the amplitude and/or phase. A computer, running an application program, quantifies the change and determines the applicable property.
REFERENCES:
patent: 4084434 (1978-04-01), Goodrich et al.
patent: 4580233 (1986-04-01), Parker et al.
patent: 4706014 (1987-11-01), Fabbri
patent: 5394096 (1995-02-01), Meyer
patent: 5394340 (1995-02-01), Inkpen et al.
Hall John Charles Ebenezer
Inkpen Stuart Louis
Linfield Dana Charles
Marshall Christopher Hext
Nolan Christopher David
Instrumar Limited
Kinsman L. Anne
Regan Maura
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