Patent US4392341A successfully refreshed from Google Patents.
US4392341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Twisting machine
Assignee: Saurer Allma GmbH
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Filing: 1982-05-18
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Granted: 1983-07-12
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Expires: 2002-05-18
Abstract
Abstract A twisting machine for twisting several filament yarn strands which are preferably an aramid (aromatic polyamide) and wound on spools, has a creel for supporting the spools, a delivery system which includes several feed rollers, and a first thread guide which is supported before the delivery system along the strand paths for movement back and forth in directions parallel to the axes of the delivery rollers. The first thread guide is a cylindrical first guide roller which has a circumferential guide groove for each yarn strand and is rotatable about an axis which extends parallel to the feed roller axes. A second cylindrical guide roller is arranged following the delivery system along the strand paths, is freely supported for rotation about an axial movement along an axis which is parallel to the feed roller axes, and has a circumferential guide groove for each yarn strand. A spindle for supporting the winding bobbin is provided, and along an extension of the spindle axis a second thread guide is provided which has a guide eyelet for each yarn strand. Below the second thread guide is a third thread guide having an opening through which all the yarn strands are guided.
Inventors
- 👤 Werner Grill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:49
CPC Classifications
D; D01; D01H; D01H1/00; D01H1/14; D01H1/42; D01H1/425; B; B65; B65H; B65H57/00; B65H57/16; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
209 words
In a machine for twisting several filament yarn strands wrapped on spools, including a creel for supporting the spools, a delivery system which includes several feed rollers, a first thread guide supported along the thread path between the spools and the delivery system for movement back and forth in directions parallel to the axes of the feed rollers and having a guideway for each of the yarn strands, thread-guiding means following the delivery system, a rotatable spindle for supporting a winding bobbin, a second thread guide arranged along an extension of the axis of the spindle and having a respective guide eyelet for each yarn strand, and a third thread guide which follows the second thread guide and has an opening through which all yarn strands are guided together, the improvement comprising wherein the first thread guide is a first guide roller which has a circumferential guide groove for each yarn strand and is freely rotatable about an axis which extends generally parallel to the feed roller axes, and wherein the thread-guiding means includes a second guide roller which is supported for rotational and axial movement with respect to an axis generally parallel to the feed roller axes and which has a circumferential guide groove for each yarn strand.
Claim 2
Dependent Claim
209 words
In a machine for twisting several filament yarn strands wrapped on spools, including a creel for supporting the spools, a delivery system which includes several feed rollers, a first thread guide supported along the thread path between the spools and the delivery system for movement back and forth in directions parallel to the axes of the feed rollers and having a guideway for each of the yarn strands, thread-guiding means following the delivery system, a rotatable spindle for supporting a winding bobbin, a second thread guide arranged along an extension of the axis of the spindle and having a respective guide eyelet for each yarn strand, and a third thread guide which follows the second thread guide and has an opening through which all yarn strands are guided together, the improvement comprising wherein the first thread guide is a first guide roller which has a circumferential guide groove for each yarn strand and is freely rotatable about an axis which extends generally parallel to the feed roller axes, and wherein the thread-guiding means includes a second guide roller which is supported for rotational and axial movement with respect to an axis generally parallel to the feed roller axes and which has a circumferential guide groove for each yarn strand.
Claim 3
Dependent Claim
20 words
The machine according to claim 1, wherein the guide rollers are made of a smooth, wear-resistant plastic, preferably a polyamide.
Claim 4
Dependent Claim
31 words
The machine according to claim 1 or claim 2, wherein the second guide roller is arranged at apoproximately the same height as one of the feed rollers of the delivery system.
Claim 5
Dependent Claim
38 words
The machine according to claim 1, wherein, along the thread path between the spools and the first guide roller, there is provided a guide roller having a smooth and polished surface, all the yarn strands being guided thereover.
Claim 6
Dependent Claim
18 words
The machine according to claim 1, wherein the delivery system includes a pressure roller having a rubber coating.
Claim 7
Dependent Claim
28 words
The machine according to claim 1, wherein the guide eyelets of the second thread guide are each spaced substantially the same distance from the axis of the spindle.
Claim 8
Dependent Claim
34 words
The machine according to claim 1, wherein the bobbin is surrounded by a limiting ring, the inner surface thereof contacting the twisted yarn and being made of a low friction material, preferably a plastic.
References Cited (Backward Citations)
US2882675A
Cited
US3344595A
Cited
US3475896A
Cited
US3651630A
Cited
US3781953A
Cited
US3780516A
Cited
US4229404A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-07-11 | 1987-01-10 | 1987-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-11 | 1991-01-10 | 1991-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-11 | 1995-01-10 | 1995-07-12 | $7700.00 | Window Closed / Lapsed |