US3973387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low delivery tension process for producing crimped yarn
Assignee: Monsanto Co
•
Filing: 1975-03-14
•
Granted: 1976-08-10
•
Expires: 1995-03-14
Abstract
Abstract False-twist heat-set thermoplastic yarn having between 10 and 100 denier is collected on a pirn using a ring-and-traveller takeup mechanism at a balloon tension between 0.03 and 0.7 grams. The resulting yarn gives improved knitting performance and greatly reduced streakiness in hose and other knitted fabrics as compared to yarn collected at higher balloon tension.
Inventors
- 👤 Harold M. Familant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:26
CPC Classifications
D; D01; D01H; D01H1/00; D01H1/02; D02; D02G; D02G1/00; D02G1/02; D02G1/0286
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
70 words
In a continuous process wherein a thermoplastic yarn of between 10 and 100 denier is textured by false-twist heat-setting, the yarn then being fed at a given speed to a ring-and-traveller take-up mechanism comprising a spindle rotatably supporting and driving a pirn on which said yarn is to be collected, the improvement comprising rotating said spindle at a rate to maintain the balloon tension between 0.03 and 0.7 grams force.
Claim 2
Dependent Claim
70 words
In a continuous process wherein a thermoplastic yarn of between 10 and 100 denier is textured by false-twist heat-setting, the yarn then being fed at a given speed to a ring-and-traveller take-up mechanism comprising a spindle rotatably supporting and driving a pirn on which said yarn is to be collected, the improvement comprising rotating said spindle at a rate to maintain the balloon tension between 0.03 and 0.7 grams force.
Claim 3
Dependent Claim
18 words
The process defined in claim 1, wherein said balloon tension is maintained between 0.1 and 0.5 grams force.
Claim 4
Dependent Claim
12 words
The process defined in claim 1, wherein said yarn is a polyamide.
Claim 5
Dependent Claim
29 words
The process defined in claim 1, wherein a coning oil is applied to said yarn after said yarn is textured and before said yarn is collected on said pirn.
Claim 6
Dependent Claim
14 words
The process defined in claim 1, wherein said yarn is formed from nylon 66.
Claim 7
Dependent Claim
14 words
The process defined in claim 2, wherein said yarn is formed from nylon 66.
Claim 8
Dependent Claim
14 words
The process defined in claim 4, wherein said yarn is formed from nylon 66.
Claim 9
Dependent Claim
14 words
The process defined in claim 1, wherein said yarn is formed from nylon 6.
Claim 10
Dependent Claim
14 words
The process defined in claim 2, wherein said yarn is formed from nylon 6.
Claim 11
Dependent Claim
14 words
The process defined in claim 4, wherein said yarn is formed from nylon 6.
Claim 12
Dependent Claim
11 words
A pirn package produced by the process defined in claim 1.
Claim 13
Dependent Claim
11 words
A pirn package produced by the process defined in claim 2.
Claim 14
Dependent Claim
11 words
A pirn package produced by the process defined in claim 4.
Claim 15
Dependent Claim
11 words
A pirn package produced by the process defined in claim 5.
Claim 16
Dependent Claim
11 words
A pirn package produced by the process defined in claim 6.
Claim 17
Dependent Claim
11 words
The pirn package produced by the process defined in claim 7.
Claim 18
Dependent Claim
13 words
A warp wound pirn package produced by the process defined in claim 1.
Claim 19
Dependent Claim
13 words
A warp wound pirn package produced by the process defined in claim 2.
Claim 20
Dependent Claim
13 words
A warp wound pirn package produced by the process defined in claim 4.
Claim 21
Dependent Claim
13 words
A warp wound pirn package produced by the process defined in claim 5.
References Cited (Backward Citations)
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US3462938A
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US3589120A
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US3638411A
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US3665696A
Cited
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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) | 1979-08-10 | 1980-02-09 | 1980-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-10 | 1984-02-09 | 1984-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-10 | 1988-02-09 | 1988-08-10 | $7700.00 | Window Closed / Lapsed |