Edge position sensor with integral thickness gauge

Details Edge position sensor with integral thickness gauge Edge position sensor with integral thickness gauge

1997-06-13

1999-12-07

Mansen, Michael R.

Advancing material of indeterminate length

With material-responsive control means

Detector means

3350103, 226 15, 324662, B65H 2600, G01B 300, G01R 2726

Patent

active

059968729

ABSTRACT:
A system for determining the edge of a continuous web and which compensates for non-uniformity in dielectric response, including thickness is disclosed. The invention comprises first electrode for outputting a signal corresponding to the edge position of a continuous web; and second electrode associated with said first electrode for outputting a second signal corresponding to the thickness of the web, such changes in the output signal of the second electrode are related to the output signal of the first electrode.

REFERENCES:
patent: 3323699 (1967-06-01), Bricker, Jr.
patent: 3676933 (1972-07-01), Slone
patent: 3763483 (1973-10-01), Urmenyl
patent: 4485982 (1984-12-01), St. John et al.
patent: 4952882 (1990-08-01), Mayer et al.
patent: 5212452 (1993-05-01), Mayer et al.
patent: 5530368 (1996-06-01), Hildebrand

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