Patent US3880001A successfully refreshed from Google Patents.
US3880001A
Expired / Lapsed
US
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Yarn tension or break monitoring apparatus
Assignee: EIDP Inc
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Filing: 1974-03-25
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Granted: 1975-04-29
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Expires: 1994-03-25
Abstract
Abstract A bifunctional stop motion device to detect either tension surges or broken yarn as the yarn is being forwarded in a path of travel from a source to a machine. The device includes a yarn guiding pulley on a counterbalanced arm arranged to pivot for high yarn tension so that it changes the yarn path to cause a conventional feeler riding on the yarn to rotate and actuate a stop motion device shutting down the machine.
Inventors
- 👤 Edward Merrick Hogan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:44
CPC Classifications
G; G01; G01L; G01L5/00; G01L5/04; G01L5/047; B; B65; B65H; B65H63/00; B65H63/02; B65H63/024; B65H63/028; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
118 words
An apparatus to detect a variation in tension or a break in yarn being forwarded under tension in a path, said apparatus comprising: a body member located adjacent said path; a first pulley around which said yarn passes rotatably mounted to said body member, an arm mounted to said body member at a location spaced from said first pulley; means for biasing said arm against said tension; a second pulley around which said yarn passes rotatably mounted to said arm for swinging movement with said arm toward and away from said path; and means engaging said yarn intermediate said first and second pulleys for detecting when the yarn moves more than a predetermined distance away from saiD path.
Claim 2
Independent Claim
118 words
An apparatus to detect a variation in tension or a break in yarn being forwarded under tension in a path, said apparatus comprising: a body member located adjacent said path; a first pulley around which said yarn passes rotatably mounted to said body member, an arm mounted to said body member at a location spaced from said first pulley; means for biasing said arm against said tension; a second pulley around which said yarn passes rotatably mounted to said arm for swinging movement with said arm toward and away from said path; and means engaging said yarn intermediate said first and second pulleys for detecting when the yarn moves more than a predetermined distance away from saiD path.
Claim 3
Independent Claim
122 words
An apparatus to detect a variation in tension or a break in yarn being forwarded under tension in a path, said apparatus comprising: a body member located adjacent said path; a first pulley around which said yarn passes rotatably mounted to said body member, an arm pivotally mounted intermediate its ends to said body member at a location spaced from said first pulley; means for biasing said arm against said tension; a second pulley around which said yarn passes rotatably mounted to said arm for swinging movement with said arm toward and away from said path; and means engaging said yarn intermediate said first and second pulleys for detecting when the yarn moves more than a predetermined distance away from said path.
Claim 4
Independent Claim
122 words
An apparatus to detect a variation in tension or a break in yarn being forwarded under tension in a path, said apparatus comprising: a body member located adjacent said path; a first pulley around which said yarn passes rotatably mounted to said body member, an arm pivotally mounted intermediate its ends to said body member at a location spaced from said first pulley; means for biasing said arm against said tension; a second pulley around which said yarn passes rotatably mounted to said arm for swinging movement with said arm toward and away from said path; and means engaging said yarn intermediate said first and second pulleys for detecting when the yarn moves more than a predetermined distance away from said path.
Claim 5
Dependent Claim
28 words
The apparatus as defined in claim 2, including a third pulley coaxially mounted with said first pulley around which said yarn passes after it leaves said second pulley.
Claim 6
Dependent Claim
21 words
The apparatus as defined in claim 2, said means for biasing comprising a counterweight attached to one end of said arm.
Claim 7
Dependent Claim
16 words
The apparatus as defined in claim 2, said variation in tension being an increase in tension.
References Cited (Backward Citations)
US1757867A
Cited
US2361430A
Cited
US2692735A
Cited
US2727226A
Cited
US3388565A
Cited
US3482420A
Cited
US3701247A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |