Plastic article or earthenware shaping or treating: apparatus – Control means responsive to or actuated by means sensing or... – Control means responsive to product weight or dimension
Reexamination Certificate
2005-12-30
2009-02-03
Mackey, James (Department: 1791)
Plastic article or earthenware shaping or treating: apparatus
Control means responsive to or actuated by means sensing or...
Control means responsive to product weight or dimension
C425S367000
Reexamination Certificate
active
07484950
ABSTRACT:
A first forming roll and a second forming roll are provided parallel and opposite to each other, and a double-surface formed sheet is formed by the first forming roll and the second forming roll. There are provided: phase adjusting unit configured to move the second forming roll in an axial direction of the second forming roll; an upper formed-shape detector which detects a formed shape of a front surface of the double-surface formed sheet; a lower formed-shape detector which detects a formed shape of a back surface of the double-surface formed sheet; front/back-surface phase difference arithmetic operating unit configured to compare detection signals of the upper and lower formed-shape detectors with each other, calculating a forming phase difference between the formed shapes of the front surface and back surface of the double-surface formed sheet with respect to the axial direction, and outputting a phase difference value signal indicating the forming phase difference; and phase alignment control processing unit configured to receiving the phase difference value signal, and outputting an instruction to the phase adjusting unit so that the forming phase difference can be reduced.
REFERENCES:
patent: 10-034748 (1998-02-01), None
patent: 2004-142182 (2004-05-01), None
Kusago Toshihiko
Mizunuma Koji
DLA Pipet LLP (US)
Mackey James
Toshiba Kikai Kabushiki Kaisha
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