Patent EP0919944A2 successfully refreshed from Google Patents.
Patent US3802039A successfully refreshed from Google Patents.
US3802039A
Expired / Lapsed
US
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Method of crimping of filamentary materials
Assignee: Neumuenstersche Maschinen und Apparatebau GmbH
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Filing: 1971-12-30
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Granted: 1974-04-09
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Expires: 1991-12-30
Abstract
Abstract A crimping chamber is provided having an axially spaced inlet and outlet and intermediate the same radial venting ports. A filamentary material to be crimped is entrained and inserted into the inlet of the chamber with a stream of hot fluid which, upon entry into the chamber, becomes vented through the venting ports. Into the chamber in the region of the outlet there is admitted in counter-flow to the filamentary material a stream of cool gas which also subsequently vents through the outlet ports, and admitted into this stream of cool gas is a liquid to be finely dispersed therein.
Inventors
- 👤 E Bauch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:04
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/12; D02G1/125
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
157 words
Method of crimping filamentary materials, comprising the steps of providing an enclosed space having an inlet and an axially spaced outlet and radial venting ports intermediate the same; entraining a filamentary material to be crimped with a stream of hot fluid and inserting the filamentary material into said inlet so that such material advances towards said outlet and becomes crimped within said enclosed space, whereas said hot fluid vents radially through said venting ports; admitting into said space, in the region of said outlet, a stream of cool gas for contact with and initial counterflow to the direction of radial advancement of the crimped filamentary material, and for subsequent venting through said venting ports; and admitting liquid into said stream of cool gas for dispersal therein aNd for enhancing the cooling effect thereof on the crimped filamentary material, whereby to uniformly cool the latter in said space prior to withdrawal thereof from said space through said outlet.
Claim 2
Dependent Claim
157 words
Method of crimping filamentary materials, comprising the steps of providing an enclosed space having an inlet and an axially spaced outlet and radial venting ports intermediate the same; entraining a filamentary material to be crimped with a stream of hot fluid and inserting the filamentary material into said inlet so that such material advances towards said outlet and becomes crimped within said enclosed space, whereas said hot fluid vents radially through said venting ports; admitting into said space, in the region of said outlet, a stream of cool gas for contact with and initial counterflow to the direction of radial advancement of the crimped filamentary material, and for subsequent venting through said venting ports; and admitting liquid into said stream of cool gas for dispersal therein aNd for enhancing the cooling effect thereof on the crimped filamentary material, whereby to uniformly cool the latter in said space prior to withdrawal thereof from said space through said outlet.
Claim 3
Dependent Claim
11 words
Method as defined in claim 1, wherein said liquid is water.
Claim 4
Dependent Claim
41 words
Method as defined in claim 1, wherein the step of admitting said liquid comprises admitting the liquid to said stream of cool gas in a quantity which is smaller than the amount required for saturating said cool gas with liquid vapor.
Claim 5
Dependent Claim
41 words
Method as defined in claim 1, wherein the step of admitting said liquid comprises admitting the liquid to said stream of cool gas in a quantity which is larger than the amount required for saturating said cool gas with liquid vapor.
Claim 6
Dependent Claim
18 words
Method as defined in claim 4; further comprising the step of admixing with said liquid dissolved solid matter.
Claim 7
Dependent Claim
17 words
Method as defined in claim 4; further comprising the step of admixing coloring matter with said liquid.
Claim 8
Independent Claim
144 words
A method of crimping filamentary materials, comprising the steps of entraining a filamentary material to be crimped with a stream of hot fluid and advancing the former at a first speed in an elongated path in direction from an inlet to an outlet thereof; venting the hot fluid radially of said path to reduce said first speed to a lower second speed, and concomitantly crimping the filamentary material; directing a stream of cool gas on said crimped filamentary material for initial counterflow to said direction and for subsequent venting radially of said path; admitting liquid into said stream of cool gas for dispersal therein and for enhancing the cooling effect thereof on the crimped filamentary material, whereby to uniformly cool the latter with attendant setting of the crimp in the filamentary material; and withdrawing the filamentary material having the set crimp through said outlet.
Claim 9
Independent Claim
144 words
A method of crimping filamentary materials, comprising the steps of entraining a filamentary material to be crimped with a stream of hot fluid and advancing the former at a first speed in an elongated path in direction from an inlet to an outlet thereof; venting the hot fluid radially of said path to reduce said first speed to a lower second speed, and concomitantly crimping the filamentary material; directing a stream of cool gas on said crimped filamentary material for initial counterflow to said direction and for subsequent venting radially of said path; admitting liquid into said stream of cool gas for dispersal therein and for enhancing the cooling effect thereof on the crimped filamentary material, whereby to uniformly cool the latter with attendant setting of the crimp in the filamentary material; and withdrawing the filamentary material having the set crimp through said outlet.
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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) | 1977-04-08 | 1977-10-08 | 1978-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-08 | 1981-10-08 | 1982-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-08 | 1985-10-08 | 1986-04-09 | $7700.00 | Window Closed / Lapsed |