Patent US3729831A successfully refreshed from Google Patents.
US3729831A
Expired / Lapsed
US
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Process and apparatus for continuously relaxing textile yarns
Assignee: Mitsubishi Chemical Corp
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Filing: 1971-12-07
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Granted: 1973-05-01
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Expires: 1991-12-07
Abstract
Abstract A textile yarn is continuously relaxed during its advance through a relax tube extending along the path of advance of the yarn and an accumulation tube wherein the yarn is accumulated so as to stay therein for a predetermined time by flowing a heating medium through the relax tube and the accumulation tube.
Inventors
- 👤 K Kosaka
- 👤 K Adachi
- 👤 H Kitagawa
- 👤 T Nakamura
- 👤 O Kato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:18
CPC Classifications
D; D06; D06C; D06C7/00; D06C7/02
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
185 words
A process of continuously relaxing a textile yarn comprising; a. prerelaxing a textile yarn by sucking it into a relax tube by jetting a heating medium along the direction of advance of said yarn and advancing it through said relax tube with the jet of said heating medium, b. further relaxing said prerelaxed yarn by accumulating it in an accumulating tube under a tensionless condition, flowing said heating medium through said yarn accumulation and carrying said yarn accumulation through said accumulation tube, c. delivering said relaxed yarn from the open end of said accumulation tube, d. blowing a cooling medium toward the open end portion of said accumulation tube along the delivery path of said yarn in a direction opposite to the direction of advance of said yarn in order to cool said relaxed yarn while unravelling entanglements and intertwinings of said accumulated yarn and preventing said accumulated yarn from overrun from said accumulation tube, and e. forcibly exhausting said heating medium which has passed through said yarn accumulation and said cooling medium which has passed through said yarn delivery path, through an exhaust duct.
Claim 2
Dependent Claim
185 words
A process of continuously relaxing a textile yarn comprising; a. prerelaxing a textile yarn by sucking it into a relax tube by jetting a heating medium along the direction of advance of said yarn and advancing it through said relax tube with the jet of said heating medium, b. further relaxing said prerelaxed yarn by accumulating it in an accumulating tube under a tensionless condition, flowing said heating medium through said yarn accumulation and carrying said yarn accumulation through said accumulation tube, c. delivering said relaxed yarn from the open end of said accumulation tube, d. blowing a cooling medium toward the open end portion of said accumulation tube along the delivery path of said yarn in a direction opposite to the direction of advance of said yarn in order to cool said relaxed yarn while unravelling entanglements and intertwinings of said accumulated yarn and preventing said accumulated yarn from overrun from said accumulation tube, and e. forcibly exhausting said heating medium which has passed through said yarn accumulation and said cooling medium which has passed through said yarn delivery path, through an exhaust duct.
Claim 3
Dependent Claim
40 words
A process as set forth in claim 1, wherein a portion of said heating medium having passed through said yarn accumulation is forcibly exhausted and the remaining portion of said heating medium is naturally exhausted through a supplementary exhaust duct.
Claim 4
Dependent Claim
28 words
A process as set forth in claim 1, wherein an additional heating medium is flowed into said yarn accumulation through a lower side portion of said yarn accumulation.
Claim 5
Dependent Claim
23 words
A process as set forth in claim 1, wherein said relax tube is heated to prevent condensation of said heating medium flowing therethrough.
Claim 6
Dependent Claim
24 words
A process as set forth in claim 1, wherein said heating medium flowing around said accumulation tube is heated to prevent it from condensation.
Claim 7
Dependent Claim
22 words
A process as set forth in claim 1, wherein said heating medium is selected from hot air, saturated steam or superheated steam.
Claim 8
Dependent Claim
15 words
A process as set forth in claim 1, wherein said cooling medium is cold air.
Claim 9
Independent Claim
161 words
An apparatus for continuously relaxing a textile yarn comprising; a. a feed nozzle device provided with means for defining a yarn feed path and means for defining a nozzle slit surrounding said yarn feed path through which nozzle a heating medium is jetted, b. a relax tube extending from said feed nozzle device, c. an accumulation tube extending from said relax tube and having a plurality of openings on the periphery thereof and one end open, d. an outside box covering said accumulation tube, e. a delivery nozzle device provided with means for defining a yarn delivery path and means for defining a nozzle slit for forming and blowing a cooling medium around said yarn delivery path and opening in face of said open end of said accumulation tube, and f. means for forcibly exhausting said heating medium and said cooling medium, said means is connected to said outside box, said cooling medium nozzle slit, and said accumulation tube open end.
Claim 10
Independent Claim
161 words
An apparatus for continuously relaxing a textile yarn comprising; a. a feed nozzle device provided with means for defining a yarn feed path and means for defining a nozzle slit surrounding said yarn feed path through which nozzle a heating medium is jetted, b. a relax tube extending from said feed nozzle device, c. an accumulation tube extending from said relax tube and having a plurality of openings on the periphery thereof and one end open, d. an outside box covering said accumulation tube, e. a delivery nozzle device provided with means for defining a yarn delivery path and means for defining a nozzle slit for forming and blowing a cooling medium around said yarn delivery path and opening in face of said open end of said accumulation tube, and f. means for forcibly exhausting said heating medium and said cooling medium, said means is connected to said outside box, said cooling medium nozzle slit, and said accumulation tube open end.
Claim 11
Dependent Claim
27 words
An apparatus as set forth in claim 8, further comprising means for naturally exhausting a portion of said heating medium, said means connected to said outside box.
Claim 12
Dependent Claim
35 words
An apparatus as set forth in claim 8, wherein said outside box is laterally partitioned into an upper chamber and a lower chamber, and said lower chamber is connected to a heating medium supply conduit.
Claim 13
Dependent Claim
17 words
An apparatus as set forth in claim 8, wherein said relax tube is surrounded by a heater.
Claim 14
Dependent Claim
17 words
An apparatus as set forth in claim 10, wherein said outside box is surrounded by a heater.
Claim 15
Dependent Claim
16 words
An apparatus as set forth in claim 8, wherein said accumulation tube is a cylindrical tube.
Claim 16
Dependent Claim
18 words
An apparatus as set forth in claim 8, wherein said accumulation tube is a downwardly converging cone-shaped tube.
Claim 17
Dependent Claim
32 words
An apparatus as set forth in claim 8, wherein said accumulation tube is composed of an upwardly converging cone-shaped upper tube and a downwardly converging cone-shaped lower tube connected to each other.
Claim 18
Dependent Claim
20 words
An apparatus as set forth in cLaim 8, wherein said opening on said accumulation tube periphery is a circular opening.
Claim 19
Dependent Claim
27 words
An apparatus as set forth in claim 8, wherein said opening on said accumulation tube periphery is a slit extending along the length of said accumulation tube.
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) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |