US4538463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flaw detection in wire drawing
Assignee: International Standard Electric Corp
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Filing: 1984-03-15
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Granted: 1985-09-03
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Expires: 2004-03-15
Abstract
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.
Inventors
- 👤 Nicolas C. Pease
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:08
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/14; G01N2291/00; G01N2291/26; G01N2291/262; G01N2291/2626
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
64 words
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.
Claim 2
Independent Claim
64 words
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.
Claim 3
Dependent Claim
23 words
The method as defined in claim 1, wherein said monitoring step includes providing a visual display of the behavior of the electrical signal.
Claim 4
Dependent Claim
23 words
The method as defined in claim 1, wherein said monitoring step includes analyzing the behavior of the electrical signal in a data processor.
Claim 5
Dependent Claim
32 words
The method as defined in claim 1, and further comprising the step of marking the section of the wire affected by the flaw in accordance with the results of said monitoring step.
Claim 6
Independent Claim
70 words
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.
Claim 7
Independent Claim
70 words
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.
Claim 8
Dependent Claim
16 words
The apparatus as defined in claim 5, wherein said acoustic sensor is affixed to said die.
Claim 9
Dependent Claim
25 words
The apparatus as defined in claim 5, wherein said monitoring means includes means for providing a visual display of the behavior of the electrical signal.
Claim 10
Dependent Claim
25 words
The apparatus as defined in claim 5, wherein said monitoring means includes means for analyzing the behavior of the electrical signal, including data processing means.
Claim 11
Dependent Claim
31 words
The apparatus as defined in claim 5, and further comprising means for marking the section of the wire affected by the flaw in accordance with the output of said monitoring means.
References Cited (Backward Citations)
US4487068A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-09-02 | 1989-03-04 | 1989-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-02 | 1993-03-04 | 1993-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-02 | 1997-03-04 | 1997-09-03 | $7700.00 | Window Closed / Lapsed |