US3594558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for determining the action of an electronic thread cleaner
Assignee: Loepfe AG Gebrueder
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Filing: 1969-01-21
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Granted: 1971-07-20
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Expires: 1989-01-21
Abstract
Abstract The cleaning action of an electronic thread cleaner is determined by calculating from variations in time of the thickness of a thread at least one value determined by the appearance of frequent variations in thickness, the value being that of a suitably selected auxiliary quantity which can be determined in the range of frequent thickness variations as well as the range of rare thickness variations. Then the cleaning action can be determined on the basis of this value or values by extrapolation of the course of this auxiliary quantity depending upon the set parameters of the thread cleaner within the range of the rare deviations in thickness.
Inventors
- 👤 Erich Loepfe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:40
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/36; G01N33/365; B; B65; B65H; B65H63/00; B65H63/06; B65H63/062; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
85 words
A process of determining the cleaning action of an electronic thread cleaner, which comprises producing at least one value of an auxiliary quantity from variations in thread thickness, said value being determined by the appearance of frequent thickness variations, whereby said auxiliary quantity is fixable in the range of frequent thickness variations as well as in the range of rare thickness variations, and extrapolating the course of said auxiliary quantity depending upon set parameters of the thread cleaner in the range of rare thickness deviations.
Claim 2
Dependent Claim
85 words
A process of determining the cleaning action of an electronic thread cleaner, which comprises producing at least one value of an auxiliary quantity from variations in thread thickness, said value being determined by the appearance of frequent thickness variations, whereby said auxiliary quantity is fixable in the range of frequent thickness variations as well as in the range of rare thickness variations, and extrapolating the course of said auxiliary quantity depending upon set parameters of the thread cleaner in the range of rare thickness deviations.
Claim 3
Dependent Claim
54 words
A process in accordance with claim 1, wherein an end value resulting from the observation of a very long thread length and consisting of the sum of values of an occurrence function, investigated in the thread cleaner when a thread thickness appears and related to the observed length, is selected for said auxiliary quantity.
Claim 4
Dependent Claim
59 words
A process in accordance with claim 1, wherein an end value resulting from the observation of a very long thread length and consisting of the sum of lengths produced in the course of a signal caused by variations in thread thickness when a set valUe is exceeded and related to the observed length, is selected for said auxiliary quantity.
Claim 5
Dependent Claim
28 words
A process in accordance with claim 3, comprising producing said signal by filtering during the course of thickness variations and using said signal for determining the length sections.
Claim 6
Dependent Claim
48 words
A process in accordance with claim 1, wherein an end value resulting from the observation of a very long thread length and consisting of the sum of deviations of the thread thickness from a reference value and related to the observed length, is selected for said auxiliary quantity.
Claim 7
Independent Claim
96 words
An apparatus for determining the cleaning action of an electronic thread cleaner which comprises, a device for producing an auxiliary quantity, the value of said auxiliary quantity being determined by the appearance of frequent thickness variations, whereby said auxiliary quantity is fixable in the range of frequent thickness variations as well as in the range of rare thickness variations, an evaluating circuit of the thread cleaner, a device for producing actuating voltages for said evaluating circuit and maintaining the actuating voltages corresponding to a set value in a predetermined relationship, and means interconnecting said two devices.
Claim 8
Independent Claim
96 words
An apparatus for determining the cleaning action of an electronic thread cleaner which comprises, a device for producing an auxiliary quantity, the value of said auxiliary quantity being determined by the appearance of frequent thickness variations, whereby said auxiliary quantity is fixable in the range of frequent thickness variations as well as in the range of rare thickness variations, an evaluating circuit of the thread cleaner, a device for producing actuating voltages for said evaluating circuit and maintaining the actuating voltages corresponding to a set value in a predetermined relationship, and means interconnecting said two devices.
Claim 9
Dependent Claim
20 words
An apparatus in accordance with claim 6, having a separately actuated device for producing actuating voltages for each set value.
Claim 10
Dependent Claim
25 words
An apparatus in accordance with claim 6, wherein the differences between different values of the actuating voltage have a constant ratio for a set value.
Claim 11
Dependent Claim
22 words
An apparatus in accordance with claim 6, wherein said device for producing said auxiliary quantity comprises an integrator and an accumulating condenser.
Claim 12
Independent Claim
124 words
The apparatus for determining the cleaning action of an electronic thread cleaner, said electronic thread cleaner comprising means for sensing a running thread and producing an electrical output signal indicating the thickness of the thread, and severing means operatively connected in series with the output of said sensing means, said apparatus comprising: thickness-discriminating means, the input of said thickness-discriminating means being operatively connected in series with the output of said sensing means; indicating means, the input of said indicating means being operatively connected in series with the output of said thickness-discriminating means; integrating means operatively connected in series to the output of said thickness-discriminating means and the input of said indicating means; and threshold-setting means for setting the response threshold of said thickness-discriminating means.
Claim 13
Independent Claim
124 words
The apparatus for determining the cleaning action of an electronic thread cleaner, said electronic thread cleaner comprising means for sensing a running thread and producing an electrical output signal indicating the thickness of the thread, and severing means operatively connected in series with the output of said sensing means, said apparatus comprising: thickness-discriminating means, the input of said thickness-discriminating means being operatively connected in series with the output of said sensing means; indicating means, the input of said indicating means being operatively connected in series with the output of said thickness-discriminating means; integrating means operatively connected in series to the output of said thickness-discriminating means and the input of said indicating means; and threshold-setting means for setting the response threshold of said thickness-discriminating means.
Claim 14
Dependent Claim
71 words
The apparatus as defined in claim 10 which further comprises: a length-discriminating means operatively connected in parallel with said thickness-discriminating means; a further threshold-setting means for setting the response threshold of said length-discriminating means; and addition means having a first ans second input, the first input being operatively connected with the output of said length discriminating means and the second input being operatively connected with the output of said thickness-discriminating means.
References Cited (Backward Citations)
US2714328A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |