US3852948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yarns, tows, and fibers having differential shrinkability
Assignee: Individual
•
Filing: 1964-02-24
•
Granted: 1974-12-10
•
Expires: 1984-02-24
Abstract
Abstract Differentially shrinkable tow of continuous filaments in which the filaments vary longitudinally thereof in latent shrinkage characteristic between predetermined minimum and maximum limits. The tow is converted into staple fiber lengths and spun into yarn.
Inventors
- 👤 J Ruddell
- 👤 H Todd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:55
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/18; D01; D01G; D01G1/00; D01G1/06; D01G99/00
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
66 words
A tow of continuous filamentary textile material adapted to be subdivided into staple fibers of generally predetermined length in which the continuous filaments thereof cyclically vary in gradual and continuous manner in latent shrinkage characteristic longitudinally thereof between predetermined minimum and maximum limits of significantly different values, the length of the cycle of said variation being substantially greater than said predetermined length of said staple fibers.
Claim 2
Dependent Claim
66 words
A tow of continuous filamentary textile material adapted to be subdivided into staple fibers of generally predetermined length in which the continuous filaments thereof cyclically vary in gradual and continuous manner in latent shrinkage characteristic longitudinally thereof between predetermined minimum and maximum limits of significantly different values, the length of the cycle of said variation being substantially greater than said predetermined length of said staple fibers.
Claim 3
Dependent Claim
8 words
Staple cut from the tow of claim 1.
Claim 4
Dependent Claim
9 words
Spun yarn produced from the staple of claim 2.
Claim 5
Dependent Claim
26 words
The tow of claim 1 wherein said cyclical variation in latent shrinkage characteristic occurs uniformily in at least substantially all of the filaments in said tow.
Claim 6
Dependent Claim
34 words
The tow of claim 1 wherein the length of said cycle ranges from about 60 inches to about 1,600 inches, and the difference between said maximum and minimum values is at least 5 percent.
Claim 7
Dependent Claim
32 words
Staple fiber produced from the tow of claim 5 wherein the mean staple length is selected to give a ratio relative to the cycle length within the range of 1/40 - 1/200.
Claim 8
Dependent Claim
20 words
The tow of claim 5 wherein the maximum latent shrinkage value differs from the minimum value by about 25-30 percent.
Claim 9
Dependent Claim
76 words
Staple fiber produced from the tow of claim 7 and having a distribution of fibers therein such that 40 percent have a latent shrinkage varying from the minimum value to the minimum value plus 10 percent, 20 percent have a latent shrinkage varying from the minimum value plus 10 percent to the minimum value plus 20 percent, and 40 percent have a latent shrinkage varying from the minimum value plus 20 percent to the maximum value.
Claim 10
Dependent Claim
21 words
The tow of claim 1 wherein said cycle length is at least twice the generally predetermined length of said staple fibers.
Claim 11
Dependent Claim
79 words
A tow of continuous man-made textile filaments in which the continuous filaments thereof vary in latent shrinkage characteristic gradually and continuously from filament to filament across the tow from a minimum value to a significantly different maximum value, the characteristic of each of substantially all of said filaments being at least slightly different from that of the other filaments, the latent shrinkage characteristic of each filament also varying longitudinally thereof between minimum value and a significantly different maximum value.
Claim 12
Dependent Claim
79 words
A tow of continuous man-made textile filaments in which the continuous filaments thereof vary in latent shrinkage characteristic gradually and continuously from filament to filament across the tow from a minimum value to a significantly different maximum value, the characteristic of each of substantially all of said filaments being at least slightly different from that of the other filaments, the latent shrinkage characteristic of each filament also varying longitudinally thereof between minimum value and a significantly different maximum value.
Claim 13
Dependent Claim
8 words
Staple cut from the tow of claim 10.
Claim 14
Dependent Claim
9 words
Spun yarn produced from the staple of claim 11.
Claim 15
Dependent Claim
46 words
The tow of claim 10 wherein said longitudinal variation occurs cyclically along the length of the filaments, the length of said cycle ranging from about 60 inches to about 1,600 inches and difference between each of said minimum and maximum values is at least 5 percent.
Claim 16
Dependent Claim
31 words
Staple fiber produced from the tow of claim 13 wherein the mean staple length is selected to give a ratio relative to the cycle length within the range of 1/40 -1/200.
References Cited (Backward Citations)
US2730757A
Cited
US2878548A
Cited
US2968834A
Cited
US3116197A
Cited
US2820986A
Cited
US2953427A
Cited
US2984889A
Cited
US2980492A
Cited
US2975474A
Cited
US3081516A
Cited
US3127915A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |