US2738937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Textile apparatus
Assignee: Celanese Corp
•
Filing: 1951-10-06
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Granted: 1956-03-20
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Expires: 1971-10-06
Abstract
No abstract record available.
Inventors
- 👤 Robert H Roughsedge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:22
CPC Classifications
B; B65; B65H; B65H59/00; B65H59/10; B65H59/16; B65H2555/00; B65H2555/20; B65H2555/23; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A YARN TENSION DEVICE COMPRISING A MAGNET INCLUDING A CIRCULAR COIL, MEANS MOVABLE BY A TRAVELING YARN, A VERTICAL SHAFT SUPPORTING SAID YARN MOVABLE MEANS, A BEARING SUPPORTING THE LOWER END OF SAID VERTICAL SHAFT, A CIRCULAR RIM OPERATIVELY CONNECTED TO SAID YARN MOVABLE MEANS, AND A RING OF ELECTRICALLY CONDUCTING MATERIAL SECURED TO SAID RIM AND POSITIONED IN THE MAGNETIC FIELD PRODUCED BY SAID MAGNET SO THAT MOVEMENT OF THE YARN MOVABLE MEANS BY THE TRAVLEING YARN WILL MOVE SIAD RING WITH RESPECT TO THE MAGNETIC FIELD TO APPLY A BRAKING
Claim 2
Dependent Claim
92 words
A YARN TENSION DEVICE COMPRISING A MAGNET INCLUDING A CIRCULAR COIL, MEANS MOVABLE BY A TRAVELING YARN, A VERTICAL SHAFT SUPPORTING SAID YARN MOVABLE MEANS, A BEARING SUPPORTING THE LOWER END OF SAID VERTICAL SHAFT, A CIRCULAR RIM OPERATIVELY CONNECTED TO SAID YARN MOVABLE MEANS, AND A RING OF ELECTRICALLY CONDUCTING MATERIAL SECURED TO SAID RIM AND POSITIONED IN THE MAGNETIC FIELD PRODUCED BY SAID MAGNET SO THAT MOVEMENT OF THE YARN MOVABLE MEANS BY THE TRAVLEING YARN WILL MOVE SIAD RING WITH RESPECT TO THE MAGNETIC FIELD TO APPLY A BRAKING
References Cited (Backward Citations)
US1528796A
Cited
GB189905A
Cited
GB263090A
Cited
US2293748A
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US2361239A
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US2465932A
Cited
US2364808A
Cited
US2528271A
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US2482428A
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US2519882A
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US2688789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-20 | 1959-09-19 | 1960-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-20 | 1963-09-19 | 1964-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-20 | 1967-09-19 | 1968-03-20 | $7700.00 | Window Closed / Lapsed |