US3613347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yarn twist measuring instrument
Assignee: Warner and Swasey Co
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Filing: 1970-05-08
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Granted: 1971-10-19
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Expires: 1990-05-08
Abstract
Abstract YARN TWIST MEASURING INSTRUMENT COMPRISES A NEEDLE WHICH REST ON THE YARN AND IS OTHERWISE SUPPORTED BY A LOW FRICTION BEARING PERMITTING THE NEELDE TO TURN FREELY IN A HORIZONTAL PLANE. IF THE NEEDLE IS COUNTER-BALANCED, THE YARN AND THE PLANE IN WHICH THE NEEDLE TURNS NEED NOT BE HORIZONTAL. AS THE YARN MOVES LONGITUDINALLY AND IS ROTATED TO PRODUCE TWIST OR FALSE TWIST, THE NEEDLE ASSUMES AN ANGULAR DISPOSITION INDICATIVE OF THE AMOUNTS OF TWIST BEING PLACE IN THE YARN.
Inventors
- 👤 George A Carruthers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:12
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/26; G01N33/00; G01N33/36; G01N33/365
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |