Patent US3965664A successfully refreshed from Google Patents.
US3965664A
Expired / Lapsed
US
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Method of making spun yarn
Assignee: KAMMGARNSPINNEREI BUERGLEN
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Filing: 1974-09-18
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Granted: 1976-06-29
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Expires: 1994-09-18
Abstract
Abstract In a method of making spun yarn from staple fibers, a mix is formed which includes synthetic plastic staple fibers of at least three different titers. One of these titers is a medium titer which is within a range of 6 microns of the average titer of the synthetic plastic fibers in the mix. Another titer is a fine titer which is at most about 15 microns less than the average titer of the synthetic plastic fibers in the mix. The third titer is a coarse titer which is at most about 15 microns in excess of the average titer of the synthetic plastic fibers in the mix. The fibers of medium titer constitute a minimum of about two-thirds of the weight of the synthetic plastic fibers in the mix. The thus-formed mix of fibers is subjected to a spinning operation so as to convert it into a spun yarn. The selection of the titers as outlined enables a spun yarn of synthetic plastic fibers to be obtained which, to the touch, feels like a yarn made of natural fibers.
Inventors
- 👤 Hans Goetti
- 👤 Anton Mittler
- 👤 Hermann Forrer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:59
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/22
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
123 words
In a method of making spun yarns from staple fibers, the steps of forming a mix which comprises synthetic plastic staple fibers of at least three different titers including a medium titer which is within a range of about 6 microns of the average titer of the synthetic plastic fibers in said mix, a fine titer which is at most about 15 microns less than said average titer and a coarse titer which is at most about 15 microns in excess of said average titer and wherein the fibers of said medium titer constitute a minimum of about two-thirds of the weight of the synthetic plastic fibers in said mix; and spinning said mix so as to convert it into a spun yarn.
Claim 2
Dependent Claim
123 words
In a method of making spun yarns from staple fibers, the steps of forming a mix which comprises synthetic plastic staple fibers of at least three different titers including a medium titer which is within a range of about 6 microns of the average titer of the synthetic plastic fibers in said mix, a fine titer which is at most about 15 microns less than said average titer and a coarse titer which is at most about 15 microns in excess of said average titer and wherein the fibers of said medium titer constitute a minimum of about two-thirds of the weight of the synthetic plastic fibers in said mix; and spinning said mix so as to convert it into a spun yarn.
Claim 3
Dependent Claim
19 words
A method as defined in claim 1, wherein said medium titer is from about 13 to about 22.75 microns.
Claim 4
Dependent Claim
46 words
A method as defined in claim 1, wherein the fibers are in the form of fibrous slivers each of which includes fibers of only one of said titers; and wherein the step of forming said mix comprises integrating the fibers of said slivers with one another.
Claim 5
Dependent Claim
16 words
A method as defined in claim 3; and further comprising the step of drawing said slivers.
Claim 6
Dependent Claim
18 words
A method as defined in claim 4, wherein said mix is formed prior to drawing of said slivers.
Claim 7
Dependent Claim
46 words
A method as defined in claim 1, wherein the fibers are in the form of fibrous tows each of which includes fibers of only one of said titers; and wherein the step of forming said mix comprises integrating the fibers of said tows with one another.
Claim 8
Dependent Claim
22 words
A method as defined in claim 6; and further comprising the step of converting said tows into slivers by subdividing said tows.
Claim 9
Dependent Claim
14 words
A method as defined in claim 7, wherein said subdivision comprises severing said tows.
Claim 10
Dependent Claim
18 words
A method as defined in claim 7, wherein said mix is formed prior to conversion of said tows.
Claim 11
Dependent Claim
18 words
A method as defined in claim 1, wherein the fibers of different titer are of different staple lengths.
Claim 12
Dependent Claim
20 words
A method as defined in claim 1, wherein some of said fibers have different characteristics than other of said fibers.
Claim 13
Dependent Claim
23 words
A method as defined in claim 1, wherein the step of forming said mix comprises combining natural fibers with said synthetic plastic fibers.
Claim 14
Dependent Claim
15 words
A method as defined in claim 12, wherein said natural fibers are of plant origin.
Claim 15
Dependent Claim
15 words
A method as defined in claim 12, wherein said natural fibers are of animal origin.
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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) | 1979-06-29 | 1979-12-29 | 1980-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-29 | 1983-12-29 | 1984-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-29 | 1987-12-29 | 1988-06-29 | $7700.00 | Window Closed / Lapsed |