Geometrical instruments – Gauge – Continuous gauging
Patent
1990-05-31
1991-12-31
Cuchlinski, Jr., William A.
Geometrical instruments
Gauge
Continuous gauging
33832, 324231, G01B 300
Patent
active
050759795
ABSTRACT:
A contacting caliper gauge measures the thickness of a moving sheet material. The gauge has two sheet contacting pads, one on either side of the sheet. At least one sheet contacting pad of the caliper gauge is aerodynamically designed to limit and/or reduce the tendency of boundary layer air travelling with the sheet to raise the sheet contacting pad off of the sheet surface. The caliper gauge also includes an electromagnetic proximity sensing device for determining the distance between the caliper pads, and thereby the sheet thickness. The gauge includes a caliper pad having an electromagnetic core having two pole faces mounted to that portion of the caliper pad remaining in closest proximity to the moving sheet surface. In on embodiment, the caliper pad has a vacuum notch which pulls the rear half of the pad, and in particular the rear end of the pad, in close proximity to the moving sheet. In this embodiment, the two pole faces of the electromagnetic core are located near the rear end of the pad and straddle the vacuum notch.
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Author unknown, "What's the Plus in MicroPlus?, The most detailed profiles--ever," Mar. 1989 issue of Pulp and Paper, p. 71, place of publication unknown.
Author unknown, "Microscan Caliper Sensor (Contacting)," publication date unknown, bears 1989 U.S. copyright date, place of publication unknown.
Cuchlinski Jr. William A.
Measurex Corporation
Wirthlin Alvin
LandOfFree
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