Patent US4058008A successfully refreshed from Google Patents.
US4058008A
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US
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Yarn tension transducer
Assignee: Abbey Electronics Ltd
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Filing: 1976-09-29
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Granted: 1977-11-15
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Expires: 1996-09-29
Abstract
Abstract A yarn tension transducer comprises a movable yarn guide against which a running yarn touches and which is under a biasing force towards the yarn, movements of the guide in response to yarn tension fluctuations being converted electrically into an induction of yarn tension values.
Inventors
- 👤 John Scott Pilkington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:25
CPC Classifications
B; B65; B65H; B65H59/00; B65H59/40; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
132 words
A yarn tension transducer comprising a movable yarn guide against which a running yarn touches and which is under a biasing force towards the yarn, movement of the guide in either of two opposite directions in response to yarn tension fluctuations being converted electrically into an indication of yarn tension values, the yarn guide being mounted on a springy thin plate which is of ferromagnetic material and generally of W shape with a central portion between two outer arms, the plate being clamped by the respective ends of the two outer arms, and the yarn guide being carried at a forward end of the central portion with the latter lying between two similar electrical induction coils located opposite one another, whereby the central portion of the plate operates as a spring-loaded armature.
Claim 2
Dependent Claim
132 words
A yarn tension transducer comprising a movable yarn guide against which a running yarn touches and which is under a biasing force towards the yarn, movement of the guide in either of two opposite directions in response to yarn tension fluctuations being converted electrically into an indication of yarn tension values, the yarn guide being mounted on a springy thin plate which is of ferromagnetic material and generally of W shape with a central portion between two outer arms, the plate being clamped by the respective ends of the two outer arms, and the yarn guide being carried at a forward end of the central portion with the latter lying between two similar electrical induction coils located opposite one another, whereby the central portion of the plate operates as a spring-loaded armature.
Claim 3
Dependent Claim
78 words
Yarn tension transducer according to claim 1, wherein a rearward end of the central portion of the plate is connected to one forward end of a coiled extension spring, the other rearward end of the extension spring being connected with a rotatable screw by an eye of the spring hooked about the screw, whereby the central armature portion of the plate can be adjusted one way or the other to set its position between the two induction coils.
Claim 4
Dependent Claim
17 words
A yarn tension transducer according to claim 1, wherein said thin plate is made of spring steel.
Claim 5
Dependent Claim
16 words
A yarn tension transducer according to claim 1, wherein said yarn guide has a hook shape.
Claim 6
Dependent Claim
25 words
A yarn tension transducer according to claim 1, further comprising alarm means operatively connected with said central portion for giving notice of undesirable yarn tension.
Claim 7
Dependent Claim
52 words
A yarn tension transducer according to claim 1, further comprising a support plate, a base plate and a plurality of spacer means for spacing said support plate and said base plate and also for clamping, between said spacer means, the respective ends of the two outer arms of the springy thin plate.
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) | 1980-11-14 | 1981-05-16 | 1981-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-14 | 1985-05-16 | 1985-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-14 | 1989-05-16 | 1989-11-15 | $7700.00 | Window Closed / Lapsed |