Electric heating – Metal heating – Cutting or disintegrating
Reexamination Certificate
2007-10-16
2007-10-16
Evans, Geoffrey S. (Department: 1725)
Electric heating
Metal heating
Cutting or disintegrating
C073S30400R, C219S069140
Reexamination Certificate
active
11385721
ABSTRACT:
A table for placing a workpiece is grounded. An electrode for detecting machining fluid level is attached to an upper guide that guides the wire electrode, with the electrode insulated from the upper guide. A voltage is applied to the electrode, and the voltage between the electrode and the grounded table is detected and compared with a threshold value to determine whether the machining fluid level has reached a predetermined height.
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European Search Report for Application No. 06250964.1, dated Nov. 29, 2006.
Furuta Tomoyuki
Kawahara Akiyoshi
Evans Geoffrey S.
Fanuc Ltd
Staas & Halsey , LLP
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