Patent US4100245A successfully refreshed from Google Patents.
Patent US3961402A successfully refreshed from Google Patents.
US3961402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of bulked and crimped yarn
Assignee: John Heathcoat and Co Ltd
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Filing: 1974-12-16
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Granted: 1976-06-08
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Expires: 1994-12-16
Abstract
Abstract Bulked and crimped yarn is produced by a process comprising driving heated yarn forward to form an elongated package of compressed yarn, to which yarn is continually added at one end and withdrawn from the other end. The magnitude of the deviation of the position of the take-off end from a predetermined position is measured and used as a control parameter to control the temperature of the heated yarn.
Inventors
- 👤 Duncan Cameron Ferrier
- 👤 Thomas Berry
- 👤 Karel Murenbeeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:54
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/16; D02G1/161; D02G1/12; D02G1/122; D02G1/125; D02G1/167
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
155 words
A method of producing bulked and crimped yarn of substantially constant quality by the use of a bulking and crimping device of the type incorporating means arranged to receive yarn and propel it forwardly so as to form an elongated package extending in a direction away from the receiving and propelling means, the yarn being added to one end of the package and being taken off from the other end of the package in a bulked and crimped state, comprising sensing the deviation of the position of the take-off end of the package from a predetermined datum position, generating a signal containing information about the magnitude of the said deviation and using said signal to control the temperature of the yarn being fed to the package so that the temperature of the yarn is a function of the deviation of the position of the take-off end of the yarn package from the predetermined datum position.
Claim 2
Independent Claim
155 words
A method of producing bulked and crimped yarn of substantially constant quality by the use of a bulking and crimping device of the type incorporating means arranged to receive yarn and propel it forwardly so as to form an elongated package extending in a direction away from the receiving and propelling means, the yarn being added to one end of the package and being taken off from the other end of the package in a bulked and crimped state, comprising sensing the deviation of the position of the take-off end of the package from a predetermined datum position, generating a signal containing information about the magnitude of the said deviation and using said signal to control the temperature of the yarn being fed to the package so that the temperature of the yarn is a function of the deviation of the position of the take-off end of the yarn package from the predetermined datum position.
Claim 3
Dependent Claim
30 words
A method as claimed in claim 1 wherein said temperature control is effected by variable heat-exchanging means arranged in heat exchanging relation with the yarn and responsive to said signal.
References Cited (Backward Citations)
GB1161673A
Cited
US3777338A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-08 | 1979-12-08 | 1980-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-08 | 1983-12-08 | 1984-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-08 | 1987-12-08 | 1988-06-08 | $7700.00 | Window Closed / Lapsed |