US4035883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multipurpose intermingling jet and process
Assignee: Celanese Corp
•
Filing: 1975-03-14
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Granted: 1977-07-19
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Expires: 1995-03-14
Abstract
Abstract Apparatus and process for intermingling a synthetic continuous filament multifilament yarn at substantially any point on a synthetic filament yarn threadline by subjecting the yarn to simultaneous action of two opposed fluid jets which are radial and perpendicular to the yarn threadline. The apparatus has a yarn processing bore which is circular in cross-section and has a length to diameter ratio of from 1 to 2 to 2 to 1. The air entry ports of the apparatus are radial to the bore and opposed to each other in a common plane which is substantially perpendicular to the longitudinal axis of the bore.
Inventors
- 👤 Norman John Bond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 00:35
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/08; D02G; D02G1/00; D02G1/16; D02G1/168
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
133 words
In a continuous filament-forming process for the preparation of drawn thermoplastic yarns, the improvement comprising the step of compacting as-spun yarn to coherency factors of from 5 to >1000, after solidification of said yarn, at a point where fusion and filament deformation is no longer possible, and then drawing the compacted yarn, said compacting step being conducted with an intermingling jet suitable for operation at low fluid pressures and velocities, said jet containing a substantially circular cross-section bore adapted for passage of multifilament yarn therethrough, and two fluid inlets leading into said bore, said two inlets being axially opposed and centrally disposed and perpendicular to the longitudinal axis of said bore, said bore having length-to-diameter ratio of 1:1 to 2:1, said fluid inlets having a cross-sectional area less than that of said bore.
Claim 2
Dependent Claim
133 words
In a continuous filament-forming process for the preparation of drawn thermoplastic yarns, the improvement comprising the step of compacting as-spun yarn to coherency factors of from 5 to >1000, after solidification of said yarn, at a point where fusion and filament deformation is no longer possible, and then drawing the compacted yarn, said compacting step being conducted with an intermingling jet suitable for operation at low fluid pressures and velocities, said jet containing a substantially circular cross-section bore adapted for passage of multifilament yarn therethrough, and two fluid inlets leading into said bore, said two inlets being axially opposed and centrally disposed and perpendicular to the longitudinal axis of said bore, said bore having length-to-diameter ratio of 1:1 to 2:1, said fluid inlets having a cross-sectional area less than that of said bore.
Claim 3
Dependent Claim
34 words
The process of claim 1 wherein said jet is operated at fluid pressures of from 5 to 100 pounds per square inch gauge and fluid velocities of from 200 to 1100 feet per second.
Claim 4
Dependent Claim
15 words
The process of claim 1 wherein said drawing operation is conducted during a texturing operation.
Claim 5
Dependent Claim
15 words
The process of claim 1 wherein said yarn is also compacted during said drawing operation.
Claim 6
Dependent Claim
16 words
The process of claim 1 wherein said yarn is also compacted subsequent to said drawing operation.
Claim 7
Dependent Claim
25 words
The process of claim 1 wherein a coherency factor of at least 10 is obtained in compacting said yarn prior to said initial drawing operation.
Claim 8
Dependent Claim
14 words
The process of claim 1 wherein said bore of said jet has flared ends.
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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) | 1980-07-18 | 1981-01-17 | 1981-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-18 | 1985-01-17 | 1985-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-18 | 1989-01-17 | 1989-07-19 | $7700.00 | Window Closed / Lapsed |