US3916651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous bulking and heat setting of yarn
Assignee: Warner and Swasey Co
•
Filing: 1973-11-28
•
Granted: 1975-11-04
•
Expires: 1993-11-28
Abstract
Abstract Yarn is continuously bulked and heat set by conveying it into a pressurized zone containing hot liquid, continuously relaxing the yarn under substantially zero tension and continuously conveying the relaxed yarn out of the hot pressurized liquid zone. Air pressure zones are provided, before and after the liquid zone, and air locks are provided through which the yarn can be continuously introduced into and withdrawn from the treating apparatus without significant loss of pressure.
Inventors
- 👤 George Alan Carruthers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:23
CPC Classifications
D; D06; D06B; D06B3/00; D06B3/04; D06B3/045; D02; D02G; D02G1/00; D02G1/20; D02G1/205
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
172 words
In an apparatus for continuously bulking a texturized multifilament yarn, the combination which comprises: means providing a gaseous pressurized inlet zone into which said yarn is conducted, said gaseous inlet zone having a gas outlet, for escape of gas from said gaseous inlet zone, said gas outlet defining an inlet for said yarn into said inlet zone such that said yarn enters said inlet zone countercurrently with respect to the escaping gas, means providing a pressurized hot liquid zone in contact with said inlet zone and into which the yarn is conducted from said inlet zone, the pressure in said pressurized liquid zone being approximately equal to that in said gaseous inlet zone, said pressurized liquid zone including a yarnrelaxing chamber wherein the yarn tension is relaxed, means for introducing the liquid into said relaxing chamber concurrently with the yarn whereby said yarn travels in a relaxed condition concurrently with said pressurized hot liquid through said relaxing chamber, and means for continuously withdrawing said yarn from said liquid zone after said relaxation.
Claim 2
Dependent Claim
172 words
In an apparatus for continuously bulking a texturized multifilament yarn, the combination which comprises: means providing a gaseous pressurized inlet zone into which said yarn is conducted, said gaseous inlet zone having a gas outlet, for escape of gas from said gaseous inlet zone, said gas outlet defining an inlet for said yarn into said inlet zone such that said yarn enters said inlet zone countercurrently with respect to the escaping gas, means providing a pressurized hot liquid zone in contact with said inlet zone and into which the yarn is conducted from said inlet zone, the pressure in said pressurized liquid zone being approximately equal to that in said gaseous inlet zone, said pressurized liquid zone including a yarnrelaxing chamber wherein the yarn tension is relaxed, means for introducing the liquid into said relaxing chamber concurrently with the yarn whereby said yarn travels in a relaxed condition concurrently with said pressurized hot liquid through said relaxing chamber, and means for continuously withdrawing said yarn from said liquid zone after said relaxation.
Claim 3
Dependent Claim
26 words
Apparatus according to claim 1, wherein said liquid zone further includes an inlet chamber and a conduit extending from said inlet chamber to said relaxing chamber.
Claim 4
Dependent Claim
46 words
Apparatus according to claim 2, wherein said conduit is substantially smaller in cross section area than said inlet chamber or said relaxing chamber, and wherein means are provided for causing said liquid to flow turbulently in said conduit from said inlet chamber toward said relaxing chamber.
Claim 5
Dependent Claim
19 words
Apparatus according to claim 2, wherein said inlet chamber is substantially smaller in cross section than said relaxing chamber.
Claim 6
Dependent Claim
38 words
Apparatus according to claim 2, wherein means are provided for causing hot pressurized liquid to flow continuously through said conduit in contact with said yarn, in a manner to influence said yarn for movement along with said liquid.
Claim 7
Dependent Claim
22 words
Apparatus according to claim 2, wherein means are provided for regulating the pressure in said inlet chamber and in said relaxing chamber.
Claim 8
Dependent Claim
37 words
Apparatus according to claim 1, wherein said means for continuously withdrawing said yarn includes a gaseous pressurized outlet zone in pressure contact with said pressurized liquid zone, through which the heat relaxed yarn is conducted for collection.
Claim 9
Dependent Claim
18 words
Apparatus according to claim 7 wherein means are provided for regulating the gas pressure in said outlet zone.
Claim 10
Dependent Claim
25 words
Apparatus according to claim 7 wherein means are provided for regulating the difference of pressure between said gaseous inlet zone and said gaseous outlet zone.
Claim 11
Dependent Claim
18 words
Apparatus according to claim 1 wherein means are provided for regulating the gas pressure in said inlet zone.
Claim 12
Dependent Claim
36 words
Apparatus according to claim 1 wherein automatic means are provided for regulating the flow of said yarn into said pressurized liquid zone in response to the quantity of relaxed yarn accumulated in said yarn relaxing chamber.
Claim 13
Dependent Claim
54 words
Apparatus according to claim 11 wherein said means includes a pair of conically shaped feed rolls, combined with yarn guide means responsive to said quantity of accumulated yarn arranged to shift said yarn in the direction of the axes of said conically shaped feed rolls in a manner to vary the yarn infeed speed.
Claim 14
Dependent Claim
34 words
Apparatus according to claim 1 wherein means are provided for continuously supplying fresh quantities of said liquid to said pressurized liquid zone, and for releasing excess quantities of said liquid from said relaxing chamber.
Claim 15
Dependent Claim
16 words
Apparatus according to claim 13 wherein means are provided for introducing a dye into said liquid.
Claim 16
Dependent Claim
13 words
Apparatus according to claim 14 wherein said providing means includes a metering means.
Claim 17
Dependent Claim
16 words
Apparatus according to claim 1 wherein means are provided for controlling the temperature of said liquid.
Claim 18
Dependent Claim
10 words
Apparatus according to claim 1 wherein said liquid is water.
Claim 19
Dependent Claim
39 words
Apparatus according to claim 1 wherein a plurality of continuous bulking apparatuses for separately treating a plurality of separate yarns are arranged in parallel and adjacent to one another, and are connected to a common source of said liquid.
Claim 20
Dependent Claim
24 words
Apparatus according to claim 18 wherein said common connection includes pressure headers extending from a liquid source to all of said pressurized liquid zones.
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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) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |