US3665070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of air-conditioning undrawn yarn package in drawing machine
Assignee: Teijin Ltd
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Filing: 1970-05-22
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Granted: 1972-05-23
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Expires: 1990-05-22
Abstract
Abstract In a yarn drawing process of unwinding undrawn yarn from undrawn yarn packages placed on a creel stand located above a drawing machine, comprising introducing the undrawn yarn unwound to a hot drawing zone below for the hot drawing of the yarn and winding up the drawn yarn, the improvement comprising blowing the air conditioned to a predetermined temperature and humidity against the undrawn yarn packages from behind or above the packages and thereby preventing the hot air generated in the hot drawing zone from approaching the undrawn yarn packages placed on the creel stand and air conditioning the undrawn yarn packages.
Inventors
- 👤 Takao Knodo
- 👤 Haruki Takizawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:15
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/22; D02J1/221; B; B65; B65H; B65H54/00; B65H54/70; B65H2701/00; B65H2701/30; B65H2701/31; Y; Y10; Y10S; Y10S264/00; Y10S264/73
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
55 words
The process of claim 1 wherein an air duct having openings in its base is disposed close to and above a zone occupied by said undrawn yarn packages, thereby causing said air, which has been conditioned to a predetermined temperature and humidity, to be blown against and over said undrawn yarn packages through said openings.
Claim 2
Dependent Claim
66 words
The process of claim 1 wherein said creel stand which is loaded with said undrawn yarn packages on its side is provided with a chamber, a wall of said chamber adjacent to said undrawn yarn packages being porous to air, said chamber being in communication with said air duct, said conditioned air being supplied to said undrawn yarn packages through said porous wall of said chamber.
Claim 3
Dependent Claim
43 words
The process of claim 1 wherein said air conditioned to a predetermined tEmperature and humidity has a temperature of 30* C. or below and a relative humidity of 60 percent or above and is blown at a velocity of 0.1 to 0.8 m/sec.
Claim 4
Dependent Claim
43 words
The process of claim 1 wherein said air conditioned to a predetermined temperature and humidity has a temperature of 28* C. or below and a relative humidity of 70 percent or above and is blown at a speed of 0.25 to 0.6 m/sec.
Claim 5
Dependent Claim
63 words
The process of claim 1 wherein said conditioned air blown against said undrawn yarn packages is passed through said hot drawing zone by suction with said air duct mounted at the base of a drawn yarn winding zone and, after passed through the drawn yarn winding zone together with the hot air generated in the hot drawing zone, sucked with said air duct.
Claim 6
Dependent Claim
18 words
The process as set forth in claim 1 wherein the undrawn yarn which is packaged is polyethylene terephthalate.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |