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US 4,538,463 AGranted
Flaw detection in wire drawing
AssigneeInternational Standard Electric Corporation
InventorNicolas C. Pease
Life of this patent
Estimating the term…
Abstract
A method of detecting the presence of flaws in wire as it passes through a wire drawing die involves monitoring the output in the megacycle range of an acoustic sensor attached to the drawing die.
Claims9
A method of detecting the presence of flaws in a wire as it passes through a wire drawing die, comprising the steps of
- sensing acoustic waves issued during the passage of the wire through the die, at least in the megacycle range, and generating an electrical signal representative of such acoustic waves;
- and
- monitoring the electrical signal for the occurrence of transient events therein.
An apparatus for detecting the presence of flaws in a wire as it passes through a wire drawing die, comprising
- an acoustic sensor operative for sensing acoustic waves issued during the passage of the wire through the die, at least in the megacycle range, and operative for generating an electrical signal representative of such acoustic waves;
- and
- means for monitoring said electrical signal for the presence of transient events therein.
Dependencies are inferred from the claim text.