US3638291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yarn-treating jet
Assignee: EIDP Inc
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Filing: 1970-10-01
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Granted: 1972-02-01
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Expires: 1990-10-01
Abstract
Abstract A yarn-treating jet comprising a body and a flat cover clamped together and having two air conduits of equal rectangular cross section for directing heated fluid on a yarn advancing through a passage in the surface of the jet body contiguous with the cover. The passage includes an expansion zone located downstream from the air conduits which has an entrance larger than its exit for the purpose of providing an extended static pressure zone in the jet to improve heat transfer between the heated fluid and the yarn. The cover plate has a guiding surface adjacent the exit of the jet for diverting fluid and entrained yarn outwardly away from the jet exit.
Inventors
- 👤 Paul Wesley Yngve
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:32
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/16; D02G1/161
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
130 words
A yarn-treating jet comprising: a body and a cover clamped together; a longitudinal passage recessed in the surface of the body contiguous with the cover through which yarn passes for treatment; a pair of angularly disposed conduits in communication with the passage for directing fluid against opposite sides of the yarn; fluid supply means connected to said conduits; said passage including successively, tapered and cylindrical lengths, an enlarged throat region, an expansion cavity and a continuously expanding rectangular treatment chamber terminating at an exit, said conduits intersecting said throat region in an opposed relationship and having equal rectangular cross-sectional areas, the cross-sectional area of said throat region in communication with said expansion cavity being greater than the cross-sectional area of said expansion cavity in communication with said expanding treatment chamber.
Claim 2
Dependent Claim
130 words
A yarn-treating jet comprising: a body and a cover clamped together; a longitudinal passage recessed in the surface of the body contiguous with the cover through which yarn passes for treatment; a pair of angularly disposed conduits in communication with the passage for directing fluid against opposite sides of the yarn; fluid supply means connected to said conduits; said passage including successively, tapered and cylindrical lengths, an enlarged throat region, an expansion cavity and a continuously expanding rectangular treatment chamber terminating at an exit, said conduits intersecting said throat region in an opposed relationship and having equal rectangular cross-sectional areas, the cross-sectional area of said throat region in communication with said expansion cavity being greater than the cross-sectional area of said expansion cavity in communication with said expanding treatment chamber.
Claim 3
Dependent Claim
24 words
The apparatus as defined in claim 1, said throat region, said cavity, said chamber and said conduits being recessed at the same constant depth.
Claim 4
Dependent Claim
35 words
The apparatus as defined in claim 2, said cavity having a width adjacent said throat region greater than the width of said throat region and greater than the width of the cavity adjacent said chamber.
Claim 5
Dependent Claim
31 words
The apparatus defined in claim 1, the cross-sectional area of said throat region in communication with said expansion cavity being more than twice the cross-sectional area of one of said conduits.
Claim 6
Dependent Claim
31 words
The apparatus as defined in claim 2, the cross-sectional area of said expansion cavity in communication with said expanding treatment chamber being about twice the cross-sectional area of one said conduits.
Claim 7
Dependent Claim
40 words
The apparatus defined in claim 1, said cover having an opening there through adjacent said exit and a contoured surface sloping outwardly away from said treatment chamber toward said opening for diverting fluid and entrained yarn outwardly toward said opening.
Claim 8
Dependent Claim
199 words
A yarn-bulking jet comprising: a body and a flat cover clamped together; a longitudinal passage recessed in the surface of the body contiguous with the cover through which yarn passes for treatment; a pair of angularly disposed conduits in communication with the passage for directing fluid against opposite sides of the yarn; fluid supply means connected to said conduits; said passage including successively, tapered and cylindrical lengths, an enlarged throat region, a triangle-shaped expansion cavity and a continuously expanding rectangular treatment chamber terminating at an exit, aid conduits intersecting said throat region in an opposed relationship and having equal rectangular cross-sectional areas, said conduits, said throat region, said cavity and said chamber being recessed at the same constant depth in said surface, the cross-sectional area of said throat region in communication with said expansion cavity being greater than the cross-sectional area of said expansion cavity in communication with said expanding treatment chamber, said cover having an opening adjacent said exit and a downwardly facing contoured surface sloping gradually away from a substantially tangential relationship with said treatment chamber and terminating at said opening for diverting a portion of said fluid away from the treatment chamber outwardly toward sAid opening.
Claim 9
Dependent Claim
199 words
A yarn-bulking jet comprising: a body and a flat cover clamped together; a longitudinal passage recessed in the surface of the body contiguous with the cover through which yarn passes for treatment; a pair of angularly disposed conduits in communication with the passage for directing fluid against opposite sides of the yarn; fluid supply means connected to said conduits; said passage including successively, tapered and cylindrical lengths, an enlarged throat region, a triangle-shaped expansion cavity and a continuously expanding rectangular treatment chamber terminating at an exit, aid conduits intersecting said throat region in an opposed relationship and having equal rectangular cross-sectional areas, said conduits, said throat region, said cavity and said chamber being recessed at the same constant depth in said surface, the cross-sectional area of said throat region in communication with said expansion cavity being greater than the cross-sectional area of said expansion cavity in communication with said expanding treatment chamber, said cover having an opening adjacent said exit and a downwardly facing contoured surface sloping gradually away from a substantially tangential relationship with said treatment chamber and terminating at said opening for diverting a portion of said fluid away from the treatment chamber outwardly toward sAid opening.
Claim 10
Dependent Claim
31 words
The apparatus defined in claim 4, said contoured surface sloping gradually away from said treatment chamber in a radius of from about one to three times the height of said opening.
References Cited (Backward Citations)
US2938256A
Cited
US2995801A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |