Patent US4665719A successfully refreshed from Google Patents.
US4665719A
Expired / Lapsed
US
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Circulating thread guides
Assignee: Karl Mayer Textilmaschinenfabrik GmbH
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Filing: 1986-08-08
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Granted: 1987-05-19
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Expires: 2006-08-08
Abstract
Abstract There is provided a lapping arrangement with circulating thread guides for a warp knitting machine. The arrangement has carriers for the thread guides. A transport arrangement moves the carriers in a guide means comprising two parallel segments connected by two turning segments. In the location of the parallel segments the transport arrangement comprises two forwarding helices in whose helical thread ride rollers which are attached to the carriers. In this way, a precise positioning of the thread guides is possible.
Inventors
- 👤 Rolf Naumann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:34
CPC Classifications
D; D04; D04B; D04B25/00; D04B25/04; D04B27/00; D04B27/10
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
79 words
A thread laying arrangement for a warp knitting machine, comprising: a plurality of circulating carriers each having at least one thread guide and at least one roller; a track having two parallel segments for slidably supporting said circulating carriers and two turning segments connected between and on opposite ends of said parallel segments; and a transport arrangement having a pair of helical driving threads each positioned adjacent a corresponding one of said parallel segments for driving said circulating carriers.
Claim 2
Dependent Claim
79 words
A thread laying arrangement for a warp knitting machine, comprising: a plurality of circulating carriers each having at least one thread guide and at least one roller; a track having two parallel segments for slidably supporting said circulating carriers and two turning segments connected between and on opposite ends of said parallel segments; and a transport arrangement having a pair of helical driving threads each positioned adjacent a corresponding one of said parallel segments for driving said circulating carriers.
Claim 3
Dependent Claim
55 words
An arrangement in accordance with claim 1 wherein the helical driving threads are similar to each other and comprise: a meshed pair of gear wheels each mounted on a corresponding one of said helical driving threads, one of said threads being directly driven and the other being rotated by said meshed pair of gear wheels.
Claim 4
Dependent Claim
30 words
An arrangement in accordance with claim 2 wherein said warp knitting machine is driven by a main shaft and wherein the helical driving threads are driven by the main shaft.
Claim 5
Dependent Claim
36 words
An arrangement in accordance with claim 3 further comprising: a stepping drive coupled between said main shaft and said transport arrangement, the helical driving threads being driven by the main shaft 32 through said stepping drive.
Claim 6
Dependent Claim
13 words
An arrangement in accordance with claim 4 wherein the stepping drive is programmable.
Claim 7
Dependent Claim
38 words
An arrangement in accordance with claim 1 wherein the parallel segments of said track each comprise: two guide paths placed above each other for guiding said carriers, the rollers being attached to their carriers between said guide paths.
Claim 8
Dependent Claim
32 words
An arrangement in accordance with claim 6 wherein said threads have angled surfaces and wherein the rollers 46 each have a frustro-conical, circumferential surface for engaging the angled sides of said threads.
Claim 9
Dependent Claim
63 words
An arrangement in accordance with claim 7 wherein said at least one roller of said carriers comprises: two coaxial rollers, each turn of said threads having opposing sides with radially spaced recesses, one side of said threads being recessed in the location of one of said coaxial rollers, the other side of said threads being recessed in the location of the other roller.
Claim 10
Dependent Claim
66 words
An arrangement in accordance with claim 8 wherein the transport arrangement comprises: a pin coupling means for engaging the upper side of said carrier; a turning drive mounted in the area of the turning segments and having a lifting element connecting to the pin coupling means, said lifting element being reciprocatable to activate the pin coupling means and cause the carrier to change direction through turning.
Claim 11
Dependent Claim
34 words
An arrangement in accordance with claim 9 wherein said carrier has a bore and wherein said pin coupling means includes: a pin mounted on said lifting element for engaging the bore in said carrier.
Claim 12
Dependent Claim
32 words
An arrangement in accordance with claim 9 wherein the pin coupling means comprises: two pins commonly mounted on said carrier to follow the same ones of the guide paths in said track.
Claim 13
Dependent Claim
30 words
An arrangement in accordance with claim 6 wherein said warp knitting machine is driven by a main shaft and wherein the helical driving threads are driven by the main shaft.
Claim 14
Dependent Claim
36 words
An arrangement in accordance with claim 12 further comprising: a stepping drive coupled between said main shaft and said transport arrangement, the helical driving threads being driven by the main shaft 32 through said stepping drive.
Claim 15
Dependent Claim
13 words
An arrangement in accordance with claim 13 wherein the stepping drive is programmable.
References Cited (Backward Citations)
DE290176C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-18 | 1990-11-17 | 1991-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-18 | 1994-11-17 | 1995-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-18 | 1998-11-17 | 1999-05-19 | $7700.00 | Window Closed / Lapsed |