US3978559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yarn treating apparatus
Assignee: Techniservice Corp
•
Filing: 1974-11-11
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Granted: 1976-09-07
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Expires: 1994-11-11
Abstract
Abstract Textile yarns or strands are heated, as by contact with hot rolls, and then are crimped, preferably compressively as in a stuffer crimper, after being drawn to increased length if so drawable.
Inventors
- 👤 Robert K. Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:51
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/12
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
50 words
Apparatus for treating thermoplastic yarn comprising an internally heated roller, means for advancing the yarn in arcuate contact with the internally heated roller, means for rotating the heated roller in the direction of the winding of the yarn in contact therewith, and means for directly crimping the thus heated yarn.
Claim 2
Dependent Claim
50 words
Apparatus for treating thermoplastic yarn comprising an internally heated roller, means for advancing the yarn in arcuate contact with the internally heated roller, means for rotating the heated roller in the direction of the winding of the yarn in contact therewith, and means for directly crimping the thus heated yarn.
Claim 3
Dependent Claim
62 words
Apparatus for treating a thermoplastic yarn comprising a roller, means for winding the yarn at least partway around the roller, means for driving the roller in the direction of the winding of the yarn therearound to advance the yarn, means for heating the yarn as it travels in contact with with the roller, and means for directly crimping the thus heated yarn.
Claim 4
Dependent Claim
62 words
Apparatus for treating a thermoplastic yarn comprising a roller, means for winding the yarn at least partway around the roller, means for driving the roller in the direction of the winding of the yarn therearound to advance the yarn, means for heating the yarn as it travels in contact with with the roller, and means for directly crimping the thus heated yarn.
Claim 5
Dependent Claim
94 words
Apparatus for treating thermoplastic yarn comprising an internally heated roller, means for winding the yarn only partway around the internally heated roller, means for rotating the roller in the direction of the winding of the yarn therearound, thereby heating the yarn by means of the roller as it travels in contact with the roller, means for drawing the yarn off the roller at a greater speed than the peripheral speed of the roller, and means for directly crimping the drawn yarn while said yarn is still in a heated condition from said heating step.
Claim 6
Dependent Claim
94 words
Apparatus for treating thermoplastic yarn comprising an internally heated roller, means for winding the yarn only partway around the internally heated roller, means for rotating the roller in the direction of the winding of the yarn therearound, thereby heating the yarn by means of the roller as it travels in contact with the roller, means for drawing the yarn off the roller at a greater speed than the peripheral speed of the roller, and means for directly crimping the drawn yarn while said yarn is still in a heated condition from said heating step.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-07 | 1980-03-08 | 1980-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-07 | 1984-03-08 | 1984-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-07 | 1988-03-08 | 1988-09-07 | $7700.00 | Window Closed / Lapsed |