US3635008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yarn treating apparatus
Assignee: FMC Corp
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Filing: 1970-04-14
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Granted: 1972-01-18
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Expires: 1990-04-14
Abstract
Abstract Apparatus for producing a filament interlaced yarn comprises a cylindrical roller mounted for rotation on an axis extending at an angle to its longitudinal central axis. The yarn is pulled over the roller at right angles to the axis of rotation and rotation of the roller causes the yarn to roll back and forth across the face of the roller. The rolling of the yarn produces alternately S and Z twist which causes the filaments to become interlaced or tangled to a degree that the yarn can be used in ordinary textile operations without further twisting.
Inventors
- 👤 Warren H Guy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:33
CPC Classifications
D; D01; D01H; D01H7/00; D01H7/92; D01H7/923; Y; Y10; Y10S; Y10S57/00; Y10S57/908
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
132 words
Apparatus for treating a running filamentary structure comprising a rotatably mounted cylindrical roller, guides on opposite sides of said roller, said guides being located on a line substantially transversely bisecting said roller and at right angles to the axis of rotation of said roller, said guides being out of tangential alignment with said roller whereby a filamentary structure running between said guides is deflected from a straight-line path and held in contact with a portion of the surface of said roller, the axis of rotation of said roller extending at an angle to the longitudinal central axis thereof whereby rotation of said roller causes the filamentary structure passing thereover to roll back and forth across the face of the roller to thereby impart alternating S and Z twist to the filamentary structure.
Claim 2
Dependent Claim
132 words
Apparatus for treating a running filamentary structure comprising a rotatably mounted cylindrical roller, guides on opposite sides of said roller, said guides being located on a line substantially transversely bisecting said roller and at right angles to the axis of rotation of said roller, said guides being out of tangential alignment with said roller whereby a filamentary structure running between said guides is deflected from a straight-line path and held in contact with a portion of the surface of said roller, the axis of rotation of said roller extending at an angle to the longitudinal central axis thereof whereby rotation of said roller causes the filamentary structure passing thereover to roll back and forth across the face of the roller to thereby impart alternating S and Z twist to the filamentary structure.
Claim 3
Dependent Claim
23 words
The apparatus set forth in claim 1 wherein the axis of rotation of the roller lies in a diametrical plane of the roller.
Claim 4
Dependent Claim
25 words
The apparatus set forth in claim 1 wherein the axis of rotation of the roller does not lie in a diametrical plane of the roller.
Claim 5
Dependent Claim
21 words
The apparatus set forth in claim 2 wherein said axes cross one another substantially midway between the ends of said roller.
Claim 6
Dependent Claim
23 words
The apparatus set forth in claim 4 wherein said axes lie at an angle to one another of less than about 20* .
Claim 7
Dependent Claim
50 words
The apparatus set forth in claim 1 wherein said roller is hollow and has a foraminous surface, and means for introducing a gas under pressure into the interior of said roller so that said gas escapes through the foraminous surface and impinges on the filamentary structure passing over the roller.
Claim 8
Dependent Claim
25 words
The apparatus set forth in claim 1 wherein said roller is freely rotatable and is rotAted by the action of the filamentary structure passing thereover.
Claim 9
Dependent Claim
18 words
The apparatus set forth in claim 1 comprising means for controlling the speed of rotation of said roller.
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) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |