G - Physics – 01 – B
Patent
G - Physics
01
B
340/123.4
G01B 7/02 (2006.01) G01B 11/02 (2006.01) G01B 15/02 (2006.01) G01N 27/72 (2006.01) G01R 33/12 (2006.01) G02B 11/02 (2006.01) H03K 17/00 (2006.01)
Patent
CA 1203301
ABSTRACT An apparatus for measuring a property of a traveling sheet (10) comprises a sensor body (16,30,64) and a target body (14,20) adapted to be located on opposite sides of the sheet and constrained (e.g., by gas bearings formed between 32 and 36 and 38) during the measurement without substantial solid bodily contact for movement along respective portions of a mutual sensor path inter- secting the path of the sheet. Means (44,46,48,56,64, 70,72,74,76) effective without substantial solid bodily contact normally maintain each of the sensor and target bodies at respective, substantially constant distances from the opposite, nominal surfaces of the sheet while permitting the movement of the bodies along the sensor path in response to the position and thickness of the sheet between the nominal surfaces. Sheet property sen- sing means, including means (18,84,94,118) aboard the sensor body and means (20) aboard the target body inter- act through the sheet to produce aboard the sensor body a response dependent on the sheet property and produce, without solid bodily connections, manifestations of the sheet property dependent response at a location (at 96) spaced from the sensor body. Means (24,96) including means (96) at the spaced location detect the manifesta- tions and produce (at 263 a sheet property-indicative response.
403793
Domin Thomas M.
Landis Dan R.
Williams Paul
Accuray Corporation
Macrae & Co.
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