Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2005-07-05
2005-07-05
Nguyen, Hung (Department: 2636)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S680000, C340S870030, C340S870030, C264S040100, C264S040500, C264S040600, C264S135000
Reexamination Certificate
active
06914537
ABSTRACT:
The present invention is directed to a method of monitoring operation data for quality control with a little possibility that a nondefective product is mistakenly determined as a defective product even if the operation data fluctuates in a large waviness curve. Every time an operation data piece for quality control is obtained, a moving average of the predetermined number of data pieces lately obtained is calculated. When the deviation of a data piece from the moving average exceeds the tolerance limit, an alarm is generated. By employing the method of the present invention for monitoring operation data such as charging time, injection time and the amount of cushion in an injection-molding machine, the accuracy of determination as to a defective or nondefective can be improved.
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Kato Fumiyuki
Katsuta Hiroshi
Koike Jun
Nishizawa Makoto
Yoshinaga Akira
Nguyen Hung
Pillsbury Winthrop Shaw & Pittman LLP
Toshiba Machine Co. Ltd.
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