US3673648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
No-twist entanglement of filament and apparatus therefor
Assignee: Bridgestone Firestone Inc
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Filing: 1970-09-01
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Granted: 1972-07-04
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Expires: 1990-09-01
Abstract
Abstract A bundle of untangled filaments is passed through a confining passageway in which it is subjected to a number of air jets to entangle the yarn. Preferably, there are four air jets, three jets on one side of the yarn and the fourth on the opposite side. Usually two jets on the one side are directed perpendicularly to the yarn path at an angle to spread and entangle the yarn, and the single jet on the opposite side is directed perpendicularly against the bundle, slightly offset from where the two air jets contact it. These jets spread and impart a twist factor to the yarn filaments about the bundle axis and thereby impart some entanglement to the yarn. The fourth jet is directed countercurrently to the flow of the yarn and further separates and entangles it.
Inventors
- 👤 Bernard L Thacker Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:52
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/16
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
192 words
The method of no-twist entanglement of a bundle of parallel filaments passed continuously between three jets of fluid, two of said jets identified as the first two jets being directed against one side of the bundle at an angle of substantially 35* to 55* to a third jet and converging at substantially the axis of the bundle, said third jet being directed in the same plane against the other side of the bundle with a force substantially equal to the force of the first two jets and offset a slight distance from the convergence point of the first two jets perpendicular to the direction in which the bundle is to travel, whereby the filaments in the bundle are spread out and a twist factor is imparted to the individual filaments relative to the axis of the bundle without twisting the bundle about its axis whereby the filaments are entangled without twisting the bundle, and simultaneously directing a fourth jet against the bundle countercurrently to the direction in which the bundle is to travel, just before it reaches the aforesaid jets so as to separate the filaments, thereby aiding in interlacing the filaments.
Claim 2
Independent Claim
192 words
The method of no-twist entanglement of a bundle of parallel filaments passed continuously between three jets of fluid, two of said jets identified as the first two jets being directed against one side of the bundle at an angle of substantially 35* to 55* to a third jet and converging at substantially the axis of the bundle, said third jet being directed in the same plane against the other side of the bundle with a force substantially equal to the force of the first two jets and offset a slight distance from the convergence point of the first two jets perpendicular to the direction in which the bundle is to travel, whereby the filaments in the bundle are spread out and a twist factor is imparted to the individual filaments relative to the axis of the bundle without twisting the bundle about its axis whereby the filaments are entangled without twisting the bundle, and simultaneously directing a fourth jet against the bundle countercurrently to the direction in which the bundle is to travel, just before it reaches the aforesaid jets so as to separate the filaments, thereby aiding in interlacing the filaments.
Claim 3
Dependent Claim
109 words
The method of claim 1 in which the bundle is passed vertically down between the jets, the jets are jets of air, said first two jets are directed horizontally at an angle of 45* to one another, the air directed at the other side of the bundle being in a single jet, the air from said third jet being directed upwardly as a single jet at an angle of substantially 45* to the flow of the bundle at the same side of the bundle as said first two jets, and the air in the jets being at a pressure of substantially 100 to 300 pounds per square inch, gauge.
Claim 4
Dependent Claim
137 words
Apparatus for no-twist entanglement of a bundle of filaments which comprises a vertical passageway with means for confining the filaments as they pass downward therethrough in a first wall three jet openings with means for supplying a fluid under pressure thereto, two of said openings being in a horizontal plane and directed horizontally toward one another to cause the fluid passing therethrough to converge on the bundle axis at an angle of about 45*, the third jet being directed up at substantially 45* to contact the bundle a short distance above the level at which the bundle is contacted by said first two jets; and a fourth jet opposite the first two jets and directed horizontally to contact the bundle a short distance to one side of where the first two jets converge on the bundle axis.
Claim 5
Dependent Claim
137 words
Apparatus for no-twist entanglement of a bundle of filaments which comprises a vertical passageway with means for confining the filaments as they pass downward therethrough in a first wall three jet openings with means for supplying a fluid under pressure thereto, two of said openings being in a horizontal plane and directed horizontally toward one another to cause the fluid passing therethrough to converge on the bundle axis at an angle of about 45*, the third jet being directed up at substantially 45* to contact the bundle a short distance above the level at which the bundle is contacted by said first two jets; and a fourth jet opposite the first two jets and directed horizontally to contact the bundle a short distance to one side of where the first two jets converge on the bundle axis.
Claim 6
Dependent Claim
103 words
In one wall of a tower for the entanglement of a bundle of parallel filaments, a plate with three jet openings in one face thereof, in which plate two of said jet openings are in one plane perpendicular to the face of the plate and at an angle of substantially 45* to one another, and the third opening is in the middle between said two jet openings, spaced from the plane thereof and directed at an angle of substantially 90* to the plane of said two jet openings and directed away from sAid plane at an angle of substantially 45* to the plate.
Claim 7
Dependent Claim
103 words
In one wall of a tower for the entanglement of a bundle of parallel filaments, a plate with three jet openings in one face thereof, in which plate two of said jet openings are in one plane perpendicular to the face of the plate and at an angle of substantially 45* to one another, and the third opening is in the middle between said two jet openings, spaced from the plane thereof and directed at an angle of substantially 90* to the plane of said two jet openings and directed away from sAid plane at an angle of substantially 45* to the plate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |