US3636149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crimping of yarn
Assignee: Imperial Chemical Industries Ltd
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Filing: 1969-12-22
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Granted: 1972-01-18
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Expires: 1989-12-22
Abstract
Abstract the improvement in methods and apparatus for controlling stuffing box crimping comprising photocell measuring means arranged to provide a signal smoothly related to the amount of yarn in the buffer chamber. The ratio of withdrawal to delivery of the yarn in controlled thereby maintaining the amount of yarn in the buffer chamber constant with the counter-pressure measurement regulator maintaining the controlled ratio at a constant value.
Inventors
- 👤 Angelo Luigi Alfredo Tambini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:49
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/12; D02G1/125
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) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |