Aerodynamic caliper gauge
AssigneeMeasurex Corporation
InventorsMathew G. Boissevain, Michael K. Norton, Anthony D. Foskett, Tobias J. Boissevain
Life of this patent
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Abstract
A contacting caliper gauge measures the thickness of a moving sheet material. The gauge has two heads, one on either side of the sheet. The sheet contacting pads of the caliper gauge are aerodynamically designed to limit and/or reduce the tendency of boundary layer air travelling with the sheet to raise the sheet-contacting pads off of the sheet surfaces.
Claims19
An aerodynamic sheet contact pad, the pad having front and back portions and a first side, the first side including a first surface for contact with a moving sheet and at least one indentation in the first side extending from the back end of the pad to a location along the first surface spaced from the back end of the pad.
An aerodynamic sheet contact pad, the pad having front and back portions and a first side, the first side including a first surface for contact with a moving sheet and a beveled surface at the back end of the pad inclined away from the sheet contact surface, the beveled surface extending across the entire width of the pad.
A caliper gauge for measuring a physical property of a sheet material, the gauge comprising:
- a first base;
- an extendible member having one end connected to the base;
- and
- a first pad mounted to the end of the extendible member opposite the first base, the first pad having a first side opposite the base and a front and back end, wherein the first side includes a first surface having an indentation extending from the back end of the first pad to a location along the first surface spaced from the back end of the first pad.
A sheet measuring system, comprising:
- a first sheet-contacting pad, the first pad having a first side and a front and back end, wherein the first side includes a first sheet-contacting surface having an indentation extending from the back end of the first pad to a location along the first surface spaced from the back end of the first pad;
- a sheet moving from the front to the back end of the first pad and having first and second sheet surfaces on opposite sides of the sheet, the moving sheet moving so that the first sheet surface is adjacent to the first sheet-contacting surface;
- and
- a second sheet-contacting pad, the second pad having a second side and a front and back end, wherein the second side includes a second sheet-contacting surface having an indentation extending from the back end of the second pad to a location along the second surface spaced from the back end of the second pad, the second sheet-contacting surface being disposed adjacent to the second surface of the moving sheet.
Dependencies are inferred from the claim text.