US4345205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Finish monitor
Assignee: Solutia Inc
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Filing: 1980-05-05
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Granted: 1982-08-17
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Expires: 2000-05-05
Abstract
Abstract In monitoring of yarn finish levels by conductivity, the yarn is grounded prior to the measurement, thus eliminating the effect of static electricity.
Inventors
- 👤 Joseph P. Sung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:53
CPC Classifications
D; D06; D06B; D06B23/00; D06B23/24; D06B23/26; G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/041; G01N33/00; G01N33/36; G01N33/365
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
Apparatus for determining the level of finish on a running yarn, comprising, in combination: a. first and second conductive means for contacting said yarn at respective first and second points spaced along the path of said yarn; b. means for connecting said first conductive means to a point of fixed potential; c. means for responding to the impedance along the portion of said yarn spanning said first and second conductive means, said last-named means comprising a closed series circuit comprising said first and second conductive means, said portion, a power source, and means for responding to current flow along said yarn between said first and said second conductive means; and d. a third conductive means for contacting said yarn at a point downstream of said second conductive means, and means for connecting said third conductive means to said point of fixed potential.
Claim 2
Dependent Claim
142 words
Apparatus for determining the level of finish on a running yarn, comprising, in combination: a. first and second conductive means for contacting said yarn at respective first and second points spaced along the path of said yarn; b. means for connecting said first conductive means to a point of fixed potential; c. means for responding to the impedance along the portion of said yarn spanning said first and second conductive means, said last-named means comprising a closed series circuit comprising said first and second conductive means, said portion, a power source, and means for responding to current flow along said yarn between said first and said second conductive means; and d. a third conductive means for contacting said yarn at a point downstream of said second conductive means, and means for connecting said third conductive means to said point of fixed potential.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-08-16 | 1986-02-15 | 1986-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-16 | 1990-02-15 | 1990-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-16 | 1994-02-15 | 1994-08-17 | $7700.00 | Window Closed / Lapsed |