Sensor head for film measurements
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United States of America Patent
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Oct 22, 2013
Grant Date -
May 12, 2011
app pub date -
Nov 3, 2010
filing date -
Nov 10, 2009
priority date (Note) -
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Abstract
A sensor head for measurement of a film, includes a guide surface (14) for the film, at least one sensor element (28, 30) integrated in the guide surface for measuring a property of the film, and a generator for generating an air cushion between the guide surface (14) and the film, the generator including a system for supplying a pressure medium, and a guide member (12) that is made of a porous material and forms at least a part of the guide surface (14) and is adapted to distributedly discharge the pressure medium into the air cushion, the guide member (12) having a channel system (16, 18) that divides the guide surface (14) into a plurality of fields (20, 22) that, if not disconnected, are connected only by narrow lands, the channel system being configured for draining the pressure medium from the air cushion.
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