US3977059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Textile fluid crimping process and apparatus
Assignee: Celanese Corp
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Filing: 1974-09-13
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Granted: 1976-08-31
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Expires: 1994-09-13
Abstract
Abstract Process and apparatus for crimping filamentary material, the process comprising forcing hot fluid entrained yarn into a crimping chamber in one direction, forcing cold fluid into the crimping chamber from an opposite direction and exhausting both fluids from the crimping chamber either radially and/or axially. The apparatus employs a crimping chamber having axially aligned entrance and exit portions and means within the crimping chamber for radially exhausting fluids.
Inventors
- 👤 Fredrick Allen Ethridge
- 👤 Michael Paul Taylor
- 👤 Scott Winfield Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:40
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/12
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
45 words
A process for fluid crimping yarn, said process comprising forcing hot fluid entrained yarn into a crimping chamber in one direction, forcing a cold fluid into said crimping chamber from an opposite direction and exhausting said fluids from said crimping chamber either radially and/or axially.
Claim 2
Dependent Claim
45 words
A process for fluid crimping yarn, said process comprising forcing hot fluid entrained yarn into a crimping chamber in one direction, forcing a cold fluid into said crimping chamber from an opposite direction and exhausting said fluids from said crimping chamber either radially and/or axially.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein said fluids are substantially radially exhausted.
Claim 4
Dependent Claim
12 words
The process of claim 1 wherein said fluids are substantially axially exhausted.
Claim 5
Dependent Claim
18 words
The process of claim 1 wherein said yarn is preheated prior to being subjected to said hot fluid.
Claim 6
Dependent Claim
17 words
The process of claim 1 wherein said hot fluid pressure is greater than said cold fluid pressure.
Claim 7
Dependent Claim
11 words
The process of claim 1 wherein said hot fluid is air.
Claim 8
Dependent Claim
11 words
The process of claim 1 wherein said hot fluid is steam.
Claim 9
Dependent Claim
14 words
The process of claim 1 wherein said cold fluid is air at ambient temperatures.
Claim 10
Dependent Claim
29 words
The process of claim 1 wherein said filamentary material is selected from the group consisting of polyamide, polyester, cellulose ether, cellulose ester, polyolefin, acrylic and vinyl polymer filamentary material.
Claim 11
Independent Claim
142 words
A method of crimping filamentary materials, comprising the steps of providing an enclosed space having axially spaced inlets and outlets and radial venting ports intermediate the same; entraining and inserting into said inlet with a stream of hot fluid having a temperature in the range of from 700°F to 1000°F filamentary material to be crimped, so that such material advances towards said outlet and becomes crimped within said space whereas said hot fluid vents radially through said venting ports; and admitting into said space in the region of said outlet a stream of cool fluid for contact with and initial counterflow to the direction of advancement of the crimped filamentary material, and for subsequent radial venting through said venting ports, whereby to uniformly cool the crimped filamentary material in said space prior to withdrawal of the crimped filamentary material from said space.
Claim 12
Independent Claim
142 words
A method of crimping filamentary materials, comprising the steps of providing an enclosed space having axially spaced inlets and outlets and radial venting ports intermediate the same; entraining and inserting into said inlet with a stream of hot fluid having a temperature in the range of from 700°F to 1000°F filamentary material to be crimped, so that such material advances towards said outlet and becomes crimped within said space whereas said hot fluid vents radially through said venting ports; and admitting into said space in the region of said outlet a stream of cool fluid for contact with and initial counterflow to the direction of advancement of the crimped filamentary material, and for subsequent radial venting through said venting ports, whereby to uniformly cool the crimped filamentary material in said space prior to withdrawal of the crimped filamentary material from said space.
Claim 13
Dependent Claim
26 words
A method as defined in claim 10; and comprising the step of advancing said crimped filamentary material through said stream of cool gas to said outlet.
Claim 14
Dependent Claim
23 words
A method as defined in claim 10; and comprising the step of withdrawing the crimped filamentary material from said space through said outlet.
Claim 15
Dependent Claim
20 words
A method as defined in claim 10; further comprising the step of heating said filamentary material prior to entraining thereof.
Claim 16
Dependent Claim
13 words
A method as defined in claim 10; wherein said fluids are gaseous fluids.
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) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |