Patent US4111540A successfully refreshed from Google Patents.
Patent US3992867A successfully refreshed from Google Patents.
US3992867A
Expired / Lapsed
US
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Two-for-one twisting process
Assignee: Oerlikon Barmag AG
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Filing: 1975-02-11
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Granted: 1976-11-23
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Expires: 1995-02-11
Abstract
Abstract A two-for-one twisting process for twisting two or more individual strands being taken off from separate feed spools or packages arranged in sequence along a common twisting axis at spaced intervals, the strands being doubled or plied together along the twisting axis in a forward take-off direction, wherein the completely plied strands passing the final feed package are deflected and returned backwardly in a rotating balloon pattern by means of at least one rotating twisting disc such that a single balloon envelops each feed package with the plied strands crossing and finally meeting the twisting axis behind each package. The process is useful for plying and twisting all types of filamentary or stranded materials.
Inventors
- 👤 Wolfgang Hartig
- 👤 Dietrich Berges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:34
CPC Classifications
D; D07; D07B; D07B3/00; D07B3/02; D07B3/04; D02; D02G; D02G3/00; D02G3/22; D02G3/26; D02G3/28; D02G3/285
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
122 words
A two-for-one twisting process for twisting a plurality of individual strands which comprises: taking off the individual strands from separate feed packages mounted at spaced positions along rotatably driven hollow shafts which define a common twisting axis; guiding the individual strands into and along the twisting axis where they are plied with each other in sequence as they pass each feed package; and deflecting the plied strands outwardly in a rotating return balloon around the final feed package to cross the twisting axis and then outwardly again in a rotating return balloon around each preceding feed package, the plied strands crossing the twisting axis after each feed package until they are drawn off from the balloon rotating around the first feed package.
Claim 2
Dependent Claim
122 words
A two-for-one twisting process for twisting a plurality of individual strands which comprises: taking off the individual strands from separate feed packages mounted at spaced positions along rotatably driven hollow shafts which define a common twisting axis; guiding the individual strands into and along the twisting axis where they are plied with each other in sequence as they pass each feed package; and deflecting the plied strands outwardly in a rotating return balloon around the final feed package to cross the twisting axis and then outwardly again in a rotating return balloon around each preceding feed package, the plied strands crossing the twisting axis after each feed package until they are drawn off from the balloon rotating around the first feed package.
Claim 3
Dependent Claim
27 words
A process as claimed in claim 1 wherein the plied strands are deflected outwardly in said balloon around each feed package by at least one rotating head.
Claim 4
Dependent Claim
54 words
A process as claimed in claim 1 wherein the plied strands are deflected outwardly in said balloon around each feed package by at least one rotating head located on said twisting axis in at least one of the positions immediately preceding and following said feed package in the direction of travel of the strands.
Claim 5
Dependent Claim
44 words
A process as claimed in claim 1 wherein the plied strands are deflected outwardly in said balloon around each feed package by rotating heads located respectively in positions both immediately preceding and following said feed package in the direction of travel of the strands.
Claim 6
Dependent Claim
31 words
A process as claimed in claim 4 wherein all of the rotating heads are driven at the same rotational speed while being maintained in light running contact with the plied strands.
References Cited (Backward Citations)
US1263405A
Cited
US3475892A
Cited
US3613348A
Cited
US3648449A
Cited
US3726074A
Cited
US3830050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-23 | 1980-05-24 | 1980-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-23 | 1984-05-24 | 1984-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-23 | 1988-05-24 | 1988-11-23 | $7700.00 | Window Closed / Lapsed |