US3994162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yarn tension measuring
Assignee: Individual
•
Filing: 1975-10-02
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Granted: 1976-11-30
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Expires: 1995-10-02
Abstract
Abstract Apparatus for measuring the tension in a length of yarn in a machine comprises deflecting means for deflecting said yarn and measuring means for measuring the force required to effect the deflection, which force is related to the tension in the yarn.
Inventors
- 👤 David William Auckland
- 👤 Nicholas Paul Lutte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:36
CPC Classifications
G; G01; G01L; G01L5/00; G01L5/04; G01L5/10; G01L5/107; B; B65; B65H; B65H59/00; B65H59/40; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
51 words
A method of measuring the tension in yarn comprising, deflecting the yarn, measuring the force required to effect the deflection, with the yarn being deflected by means of a rotor situated between the poles of an electromagnet, the rotor carrying one or more measuring guides brought into contact with the yarn.
Claim 2
Independent Claim
51 words
A method of measuring the tension in yarn comprising, deflecting the yarn, measuring the force required to effect the deflection, with the yarn being deflected by means of a rotor situated between the poles of an electromagnet, the rotor carrying one or more measuring guides brought into contact with the yarn.
Claim 3
Dependent Claim
50 words
Apparatus for measuring the tension in yarn comprising, deflecting means for deflecting the yarn, measuring means for measuring the force required to deflect the yarn, the deflecting means comprising a rotor pivotally mounted between the poles of an electromagnet and carrying one or more deflecting guides for contacting the yarn.
Claim 4
Dependent Claim
50 words
Apparatus for measuring the tension in yarn comprising, deflecting means for deflecting the yarn, measuring means for measuring the force required to deflect the yarn, the deflecting means comprising a rotor pivotally mounted between the poles of an electromagnet and carrying one or more deflecting guides for contacting the yarn.
Claim 5
Dependent Claim
13 words
Apparatus as claimed in claim 2 wherein the rotor carries two deflection guides.
Claim 6
Dependent Claim
23 words
Apparatus as claimed in claim 2, wherein the measuring means is capable of measuring the current consumed by a coil of the electromagnet.
Claim 7
Dependent Claim
17 words
Apparatus as claimed in claim 2, wherein the movement of the rotor is limited by a stop.
Claim 8
Dependent Claim
38 words
Apparatus as claimed in claim 5, wherein the rotor carries a movable contact which, when the rotor has moved through a certain angle, meets a fixed contact and is so effective to cut off power to the coil.
Claim 9
Dependent Claim
26 words
Apparatus as claimed in claim 6 wherein the measuring means includes a meter in parallel with a resistor which itself is in series with the coil.
Claim 10
Independent Claim
61 words
A method of measuring the tension in a yarn comprising: cyclically moving an element into contact with the yarn to deflect it, measuring the force necessary to effect such deflection over a plurality of cycles, the said element being carried on a pivotable member pivoted electromagnetically, with the force being measured by measuring the electrical power required to deflect the yarn.
Claim 11
Independent Claim
61 words
A method of measuring the tension in a yarn comprising: cyclically moving an element into contact with the yarn to deflect it, measuring the force necessary to effect such deflection over a plurality of cycles, the said element being carried on a pivotable member pivoted electromagnetically, with the force being measured by measuring the electrical power required to deflect the yarn.
Claim 12
Dependent Claim
83 words
Apparatus for measuring the tension in a yarn comprising: an element mounted for cyclic movement into contact with a yarn to deflect the yarn, electromagnetic cycling means for cyclically moving the element, measuring means for measuring the force necessary to deflect the yarn over a plurality of cycles, the element being carried by a pivoted member, the measuring means being capable of measuring the average electrical power needed to move the element cyclically into contact with the yarn over the plurality of cycles.
Claim 13
Dependent Claim
83 words
Apparatus for measuring the tension in a yarn comprising: an element mounted for cyclic movement into contact with a yarn to deflect the yarn, electromagnetic cycling means for cyclically moving the element, measuring means for measuring the force necessary to deflect the yarn over a plurality of cycles, the element being carried by a pivoted member, the measuring means being capable of measuring the average electrical power needed to move the element cyclically into contact with the yarn over the plurality of cycles.
Claim 14
Dependent Claim
45 words
Apparatus as claimed in claim 9, wherein the member is an armature mounted between the poles of an electromagnet having a coil connected in an oscillator circuit forming part of the cycling means and including a fixed contact and a contact carried by the armature.
References Cited (Backward Citations)
US2767576A
Cited
US3403553A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-30 | 1980-05-31 | 1980-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-30 | 1984-05-31 | 1984-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-30 | 1988-05-31 | 1988-11-30 | $7700.00 | Window Closed / Lapsed |