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Patent US4479979A successfully refreshed from Google Patents.
US4479979A
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US
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Method for indicating an insufficient level of yarn finish
Assignee: EIDP Inc
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Filing: 1983-12-19
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Granted: 1984-10-30
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Expires: 2003-12-19
Abstract
Abstract Insufficient finish level on a yarn may be detected by monitoring the temperature of a stationary surface over which the yarn runs and observing a rise in temperature above that seen when a normal fixed level of finish is present on the yarn.
Inventors
- 👤 James M. Prober
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:53
CPC Classifications
B; B65; B65H; B65H63/00; B65H71/00; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
91 words
The method of indicating a lower level of finish on a yarn than an essentially constant level applied to the yarn, said essentially constant level being represented by a set point amplitude, said method comprising: passing the yarn over a stationary-surfaced machine element; measuring the temperature of said machine element; generating a signal proportional to said temperature; comparing the amplitude of said signal to said set point amplitude; and signalling when said signal amplitude exceeds said set point amplitude, thereby indicating a lower level of finish than said essentially constant level.
Claim 2
Independent Claim
91 words
The method of indicating a lower level of finish on a yarn than an essentially constant level applied to the yarn, said essentially constant level being represented by a set point amplitude, said method comprising: passing the yarn over a stationary-surfaced machine element; measuring the temperature of said machine element; generating a signal proportional to said temperature; comparing the amplitude of said signal to said set point amplitude; and signalling when said signal amplitude exceeds said set point amplitude, thereby indicating a lower level of finish than said essentially constant level.
Claim 3
Dependent Claim
138 words
In a process for handling yarn in one or more steps wherein the yarn is advanced from one step to the next over a stationary-surfaced machine element and wherein a liquid finish is applied to the yarn at an essentially constant level at one or more locations to facilitate its handling, the method of indicating a lower level of finish on the yarn than said essentially constant level, said essentially constant level being represented by a set point amplitude, said method comprising: measuring the temperature of a machine element located downstream from said one or more locations; generating a signal proportional to said temperature; comparing the amplitude of said signal to said set point amplitude; and signalling when said signal amplitude exceeds said set point amplitude, thereby indicating a lower level of finish than said essentially constant level.
Claim 4
Dependent Claim
138 words
In a process for handling yarn in one or more steps wherein the yarn is advanced from one step to the next over a stationary-surfaced machine element and wherein a liquid finish is applied to the yarn at an essentially constant level at one or more locations to facilitate its handling, the method of indicating a lower level of finish on the yarn than said essentially constant level, said essentially constant level being represented by a set point amplitude, said method comprising: measuring the temperature of a machine element located downstream from said one or more locations; generating a signal proportional to said temperature; comparing the amplitude of said signal to said set point amplitude; and signalling when said signal amplitude exceeds said set point amplitude, thereby indicating a lower level of finish than said essentially constant level.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-30 | 1988-04-30 | 1988-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-30 | 1992-04-30 | 1992-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-30 | 1996-04-30 | 1996-10-30 | $7700.00 | Window Closed / Lapsed |