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US3683160A
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A method and apparatus for monitoring and predicting the level of dyeability of yarn during its processing
Assignee: EIDP Inc
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Filing: 1970-03-24
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Granted: 1972-08-08
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Expires: 1990-03-24
Abstract
Abstract A method and apparatus for monitoring the level of potential dyeability of a synthetic yarn while it is being produced in a plurality of steps that utilize electric power. Electric signals proportional to the power utilized in at least two of the steps are generated then fed to a computer which then computes indices of potential dyeability according to either a quadratic or linear polynomial function and generates output signals proportional to these indices. The computer output signals are then compared to preselected limits to determine and indicate the occurrence of out-of-limits dyeability values. In some situations, electric signals related to specific physical parameters other than electric power such as yarn tension, polymer viscosity and temperature may be used to supplement, or supplant the above signals in the computation.
Inventors
- 👤 William Thomas Windley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:36
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/48; G01; G01N; G01N33/00; G01N33/36; G01N33/365
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
145 words
In a process for producing yarn from polymer in a plurality of steps each of which modify a yarn physical property that affects the level of potential dyeability of the yarn, said level being related to a dyeability index, said physical properties being continuously detected, the method of monitoring the level of potential dyeability of the yarn comprising: generating first signals proportional to power levels related to physical properties detected in at least two of said steps; generating second signals having a value proportional to the dyeability index wherein said second signals are related to said first signals in accordance with the following function: where D represents the second signals do, di, di,j and dii are empirically determined constants for a preselected polymer and dye type and xi, xj represent first signals; and detecting when the value of said second signals fall outside predetermined limits.
Claim 2
Dependent Claim
145 words
In a process for producing yarn from polymer in a plurality of steps each of which modify a yarn physical property that affects the level of potential dyeability of the yarn, said level being related to a dyeability index, said physical properties being continuously detected, the method of monitoring the level of potential dyeability of the yarn comprising: generating first signals proportional to power levels related to physical properties detected in at least two of said steps; generating second signals having a value proportional to the dyeability index wherein said second signals are related to said first signals in accordance with the following function: where D represents the second signals do, di, di,j and dii are empirically determined constants for a preselected polymer and dye type and xi, xj represent first signals; and detecting when the value of said second signals fall outside predetermined limits.
Claim 3
Dependent Claim
109 words
In a process for producing yarn in a plurality of steps each of which utilizes electric power to modify a yarn property that affects the level of potential dyeability of the yarn, said level being related to a dyeability index, the method of monitoring the level of potential dyeability of the yarn comprising: generating first signals proportional to the electric power utilized in at least two of said steps; generating second signals proportional to the dyeability index wherein said second signals are related to said first signals in accordance with an explicit quadratic polynomial function having first-order interaction terms; and detecting when said second signals fall outside predetermined limits.
Claim 4
Dependent Claim
109 words
In a process for producing yarn in a plurality of steps each of which utilizes electric power to modify a yarn property that affects the level of potential dyeability of the yarn, said level being related to a dyeability index, the method of monitoring the level of potential dyeability of the yarn comprising: generating first signals proportional to the electric power utilized in at least two of said steps; generating second signals proportional to the dyeability index wherein said second signals are related to said first signals in accordance with an explicit quadratic polynomial function having first-order interaction terms; and detecting when said second signals fall outside predetermined limits.
Claim 5
Dependent Claim
14 words
The process as defined in claim 2, said yarn being produced from synthetic polymer.
Claim 6
Dependent Claim
11 words
The process as defined in claim 3, said yarn being nylon.
Claim 7
Dependent Claim
14 words
The process as defined in claim 2, said first and second signals being electric.
Claim 8
Dependent Claim
50 words
The process as defined in claim 2, said second signals being related to said first signals in accordance with the following: where D represents the second signals do, di, di,j and dii are empirically determined constants for a preselected polymer and dye type and xi, xj represent the first signals.
Claim 9
Dependent Claim
101 words
In a process for producing nylon in a plurality of steps each of which utilizes electric power to modify a yarn property that affects the level of potential dyeability of the yarn, the method of monitoring the level of potential dyeability of the yarn comprising: generating electric signals proportional to the electric power utilized in at least two of said steps, said electric signals being representations of the magnitudes of the variables in an explicit quadratic polynomial function with first order interaction terms; generating the value of said function for said magnitudes; and detecting when said value falls outside predetermined limits.
Claim 10
Dependent Claim
101 words
In a process for producing nylon in a plurality of steps each of which utilizes electric power to modify a yarn property that affects the level of potential dyeability of the yarn, the method of monitoring the level of potential dyeability of the yarn comprising: generating electric signals proportional to the electric power utilized in at least two of said steps, said electric signals being representations of the magnitudes of the variables in an explicit quadratic polynomial function with first order interaction terms; generating the value of said function for said magnitudes; and detecting when said value falls outside predetermined limits.
Claim 11
Dependent Claim
102 words
In a process for producing yarn from synthetic polymer in a plurality of steps each of which utilizes electric power to modify a yarn property that affects the level of potential dyeability of the yarn, the machine implemented method of monitoring the level of potential dyeability of the yarn as it is being produced comprising: generating electric signals proportional to the electric power utilized in at least two of said steps, said electric signals being representations of the magnitudes of the variables in a linear polynomial function; generating the value of said function and detecting when said value falls outside predEtermined limits.
Claim 12
Dependent Claim
102 words
In a process for producing yarn from synthetic polymer in a plurality of steps each of which utilizes electric power to modify a yarn property that affects the level of potential dyeability of the yarn, the machine implemented method of monitoring the level of potential dyeability of the yarn as it is being produced comprising: generating electric signals proportional to the electric power utilized in at least two of said steps, said electric signals being representations of the magnitudes of the variables in a linear polynomial function; generating the value of said function and detecting when said value falls outside predEtermined limits.
Claim 13
Dependent Claim
60 words
The process as defined in claim 8, wherein electric signals proportional to the power utilized in three of said steps are generated and the linear polynomial function is expressed by the following: where D is the level of potential dyeability of the yarn, do, di are empirically determined constants for a preselected dye type and Xi represent the electric signals.
Claim 14
Dependent Claim
100 words
In the production of yarn in the plurality of steps each of which utilizes electric power to modify a yarn property that affects the level of potential dyeability of the yarn, the system for monitoring the level of potential dyeability of the yarn comprising: means for generating electric signals proportional to the electric power utilized in at least two of said steps, said electric signals being representations of the magnitudes of the variables in a linear polynomial function; means for generating the value of said function for said magnitudes; and means for determining when said value falls outside predetermined limits.
Claim 15
Dependent Claim
100 words
In the production of yarn in the plurality of steps each of which utilizes electric power to modify a yarn property that affects the level of potential dyeability of the yarn, the system for monitoring the level of potential dyeability of the yarn comprising: means for generating electric signals proportional to the electric power utilized in at least two of said steps, said electric signals being representations of the magnitudes of the variables in a linear polynomial function; means for generating the value of said function for said magnitudes; and means for determining when said value falls outside predetermined limits.
Claim 16
Dependent Claim
18 words
The apparatus as defined in claim 10, wherein said means for generating said value is a digital computer.
Claim 17
Dependent Claim
18 words
The apparatus as defined in claim 10, wherein said means for generating said signals is a wattage transducer.
Claim 18
Dependent Claim
112 words
In the production of yarn in a plurality of steps each of which utilizes electric power to modify a yarn property that affects the level of potential dyeability of the yarn, said level being related to a dyeability index, the system for monitoring the level of potential dyeability of the yarn comprising: means for generating first signals proportional to the electric power utilized in at least two of said steps; means for generating second signals proportional to dyeability wherein said second signals are related to said first signals in accordance with an explicit quadratic polynomial function having first-order interaction terms and means for determining when said second signals fall outside predetermined limits.
Claim 19
Dependent Claim
112 words
In the production of yarn in a plurality of steps each of which utilizes electric power to modify a yarn property that affects the level of potential dyeability of the yarn, said level being related to a dyeability index, the system for monitoring the level of potential dyeability of the yarn comprising: means for generating first signals proportional to the electric power utilized in at least two of said steps; means for generating second signals proportional to dyeability wherein said second signals are related to said first signals in accordance with an explicit quadratic polynomial function having first-order interaction terms and means for determining when said second signals fall outside predetermined limits.
Claim 20
Dependent Claim
102 words
In the production of yarn in the plurality of steps each of which utilizes electric power to modify a yarn property that affects the level of potential dyeability of the yarn, the system for monitoring the level of potential dyeability of the yarn comprising: means for generating electric signals proportional to the electric power utilized in at least two of said steps, said electric signals being representations of the magnitudes of the variables in a linear polynomial function; an analog computer for generating the value of said function for said magnitudes; and means for determining when said value falls outside predetermined limits.
Claim 21
Dependent Claim
102 words
In the production of yarn in the plurality of steps each of which utilizes electric power to modify a yarn property that affects the level of potential dyeability of the yarn, the system for monitoring the level of potential dyeability of the yarn comprising: means for generating electric signals proportional to the electric power utilized in at least two of said steps, said electric signals being representations of the magnitudes of the variables in a linear polynomial function; an analog computer for generating the value of said function for said magnitudes; and means for determining when said value falls outside predetermined limits.
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) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |