B - Operations – Transporting – 26 – D
Patent
B - Operations, Transporting
26
D
341/106, 33/112
B26D 7/28 (2006.01) B02C 7/14 (2006.01) B26D 5/24 (2006.01) D21D 1/30 (2006.01)
Patent
CA 1173235
-23- ABSTRACT OF THE DISCLOSURE An apparatus and method for dynamically monitor- ing the gap between the refining surfaces of first and second relatively rotating metallic refining members. At least one of the refining members is mounted to a first rotatable shaft which is supported in a housing by lubri- cated bearing means. When the refining members are in ro- tating relation, an electrical impedance exists across the gap. The value of the impedance is dependent on the size of the gap. An alternating electrical current is passed through the gap and the voltage across the gap is monitored to provide an indication of the size of the gap. The volt- age across the gap can also be used as one input to a cir- cuit which controls the size of the gap by driving an electro/hydraulic system.
422046
Ridout & Maybee Llp
St. Regis Paper Company
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