US3781952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Textile treatment method and apparatus
Assignee: Individual
•
Filing: 1969-07-31
•
Granted: 1974-01-01
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Expires: 1989-07-31
Abstract
Abstract Textile yarns or strands are heated, as by contact with hot rolls, and if undrawn are also drawn by roll contact, and then are compressively crimped.
Inventors
- 👤 R Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:52
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/22; B; B65; B65H; B65H57/00; B65H57/12; B65H59/00; B65H59/10; B65H59/16; D02G; D02G1/00; D02G1/12; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
107 words
A method for treating thermoplastic yarn comprising the steps of taking the yarn from a supply, advancing the yarn around a roller arrangement, heating the yarn as it travels around said roller arrangement, advancing the heated yarn away from the roller arrangement at a faster rate than the rate at which the yarn travels around said roller arrangement and thereby drawing the heated yarn, driving the drawn yarn into a stuffer box crimping chamber while said drawn yarn is still in a heated condition and thereby crimping the yarn and forming a plug of crimped yarn, and removing the crimped yarn from the head of the plug.
Claim 2
Independent Claim
107 words
A method for treating thermoplastic yarn comprising the steps of taking the yarn from a supply, advancing the yarn around a roller arrangement, heating the yarn as it travels around said roller arrangement, advancing the heated yarn away from the roller arrangement at a faster rate than the rate at which the yarn travels around said roller arrangement and thereby drawing the heated yarn, driving the drawn yarn into a stuffer box crimping chamber while said drawn yarn is still in a heated condition and thereby crimping the yarn and forming a plug of crimped yarn, and removing the crimped yarn from the head of the plug.
Claim 3
Dependent Claim
168 words
Apparatus for treating thermoplastic yarn comprising means for drawing the yarn, means for crimping the drawn yarn by longitudinal compression and means for winding the crimped yarn, said drawing means comprising a roller arrangement and means for heating the yarn and means for advancing the heated yarn away from said roller arrangement, said heating means being arranged to heat the yarn as it travels around said roller arrangement and said means for advancing the yarn being adapted to advance the heated yarn away from said roller arrangement at a faster rate than the rate at which the yarn travels around said roller arrangement, said crimping means including a chamber defining a yarn bunching zone for forming a plug of crimped yarn and means for driving the drawn yarn into said chamber while the yarn is still in a heated condition from said drawing means, said winding means being arranged to wind the drawn and crimped yarn from the head of the plug thereof formed by the said chamber.
Claim 4
Dependent Claim
168 words
Apparatus for treating thermoplastic yarn comprising means for drawing the yarn, means for crimping the drawn yarn by longitudinal compression and means for winding the crimped yarn, said drawing means comprising a roller arrangement and means for heating the yarn and means for advancing the heated yarn away from said roller arrangement, said heating means being arranged to heat the yarn as it travels around said roller arrangement and said means for advancing the yarn being adapted to advance the heated yarn away from said roller arrangement at a faster rate than the rate at which the yarn travels around said roller arrangement, said crimping means including a chamber defining a yarn bunching zone for forming a plug of crimped yarn and means for driving the drawn yarn into said chamber while the yarn is still in a heated condition from said drawing means, said winding means being arranged to wind the drawn and crimped yarn from the head of the plug thereof formed by the said chamber.
Claim 5
Dependent Claim
187 words
Apparatus for treating thermoplastic yarn comprising means for drawing the yarn, means for crimping the drawn yarn by longitudinal compression and means for winding the crimped yarn, said drawing means comprising a roller arrangement and means for heating the yarn and means for advancing the heated yarn away from said roller arrangement, said roller arrangement including a driven roller having a peripheral surface in contact with which the yarn travels, said heating means being arranged to heat the yarn as it travels with said peripheral surface and said means for advancing the heated yarn being adapted to advance the heated yarn away from said roller arrangement at a faster rate than the rate at which the yarn travels with said peripheral surface, said crimping means including a chamber defining a yarn bunching zone for forming a plug of crimped yarn and means for driving the drawn yarn into said chamber while the yarn is still in a heated condition from said drawing means, said winding means being arranged to wind the drawn and crimped yarn from the head of the plug thereof formed by the said chamber.
Claim 6
Dependent Claim
187 words
Apparatus for treating thermoplastic yarn comprising means for drawing the yarn, means for crimping the drawn yarn by longitudinal compression and means for winding the crimped yarn, said drawing means comprising a roller arrangement and means for heating the yarn and means for advancing the heated yarn away from said roller arrangement, said roller arrangement including a driven roller having a peripheral surface in contact with which the yarn travels, said heating means being arranged to heat the yarn as it travels with said peripheral surface and said means for advancing the heated yarn being adapted to advance the heated yarn away from said roller arrangement at a faster rate than the rate at which the yarn travels with said peripheral surface, said crimping means including a chamber defining a yarn bunching zone for forming a plug of crimped yarn and means for driving the drawn yarn into said chamber while the yarn is still in a heated condition from said drawing means, said winding means being arranged to wind the drawn and crimped yarn from the head of the plug thereof formed by the said chamber.
Claim 7
Dependent Claim
17 words
The apparatus of claim 3 wherein said driven roller includes integral means for heating said peripheral surface.
Claim 8
Dependent Claim
43 words
The apparatus of claim 3 wherein said means for advancing the heated yarn away from said roller arrangement comprises a second roller arrangement, said second roller arrangement including a second driven roller having a peripheral surface in contact with which the yarn travels.
Claim 9
Dependent Claim
19 words
The apparatus of claim 5 wherein said second driven roller includes integral means for heating the peripheral surface thereof.
Claim 10
Dependent Claim
28 words
The apparatus of claim 3 wherein means are provided for varying the relative rate of speed of said driven roller and said means for advancing the heated yarn.
Claim 11
Dependent Claim
51 words
The apparatus of claim 7, wherein the said driven roller is driven at a peripheral speed of two and one-half times to five times slower than the peripheral speed of said second roller and said second roller passes the yarn at a speed within a range including 500 meters per minute.
References Cited (Backward Citations)
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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) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |