Paper making and fiber liberation – Processes and products – With measuring – inspecting and/or testing
Patent
1998-04-30
2000-08-22
Silverman, Stanley S.
Paper making and fiber liberation
Processes and products
With measuring, inspecting and/or testing
162263, 162344, 162346, 162347, 118671, 118672, 118712, 425145, 425150, 425171, 425466, D21F 1100
Patent
active
061066710
ABSTRACT:
Apparatus and method for controlling the size of a gap through which material is metered. The gap is defined by a rigid surface and a flexible surface connected to at least one actuator for deforming the flexible surface. A plurality of sensors are positioned along the rigid or flexible surfaces to detect the other of the surfaces and generate signals indicating its position. A computing unit in communication with the plurality of sensors processes the signals to generate a continuous gap measurement profile. The computing system also stores a pre-determined desired gap measurement profile. A control system in communication with the computing unit actuates the actuators to deform the flexible surface to adjust the gap measurement profile to correct any deviation from the desired gap measurement profile.
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Recent Experiences with Consistency Profile Control Installations--Mike Heaven; Robert Vyse; Tom Steele and Claud Hagart-Alexander--Presented at the CPPA Technical Section Pacific and Western Branch Joint Conference, Whistler, Canada May 1997 pp. 1-10).
Bucher Robert
Heaven Edwin Michael Gyde
Powell Ron I.
Fortuna Jos'e A.
Honeywell Measurex Devron Inc.
Silverman Stanley S.
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