US4006887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for continuous coating of fibers
Assignee: Draiswerke GmbH
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Filing: 1975-08-11
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Granted: 1977-02-08
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Expires: 1995-08-11
Abstract
Abstract A device for continuous coating of fibers has a horizontally mounted cylindrical mixing container with an inlet for fibers at one end and an outlet for coated fibers at the other end. The container has a mixing shaft mounted coaxially therewithin, which shaft is driveable at a considerably supercritical speed. The shaft is at least partially hollow and is provided with a glue feed through its interior. In a glue feed zone of the container the shaft is provided with glue agitating elements projecting therefrom and dispensing glue to the ring of fibers formed in the vicinity of the wall of the container. The shaft also has ventilator ridges mounted thereon extending radially outwardly for most of the length of the shaft, which ventilator ridges support mixing tools which extend into the ring of fibers.
Inventors
- 👤 Kaspar Engels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:54
CPC Classifications
B; B27; B27N; B27N1/00; B27N1/02; B27N1/0227; B27N1/0236; B27N1/0245
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
228 words
A device for continuous coating of fibers, comprising: a horizontally mounted cylindrical mixing container; an inlet funnel entering into one end of said container; an outlet funnel connected to the other end of said container; a mixing shaft mounted coaxially within said container, said shaft being at least partially hollow; drive means connected to said mixing shaft for driving said shaft at considerably supercritical speeds; glue feed means for feeding glue into at least a portion of the interior of said shaft; mixing tools connected to said shaft at least on an axial portion thereof; glue agitating elements connected to said shaft on an axial portion thereof and extending into the ring of material formed on the inside wall of the cylindrical mixing container when said shaft is operated at a considerably supercritical speed, said elements being in the form of mixing rods extending into the ring of material, each of said rods being provided with at least one groove extending in the lengthwise direction, each of said grooves being open outwardly along its entire length and each of said grooves communicating with the interior of said mixer shaft for allowing dispensing of glue into the ring of material; and means for ensuring air vorticization in said cylinder; whereby fibers may be substantially homogeneously coated while avoiding substantial jamming and lumping of the fibers in the mixing container.
Claim 2
Independent Claim
228 words
A device for continuous coating of fibers, comprising: a horizontally mounted cylindrical mixing container; an inlet funnel entering into one end of said container; an outlet funnel connected to the other end of said container; a mixing shaft mounted coaxially within said container, said shaft being at least partially hollow; drive means connected to said mixing shaft for driving said shaft at considerably supercritical speeds; glue feed means for feeding glue into at least a portion of the interior of said shaft; mixing tools connected to said shaft at least on an axial portion thereof; glue agitating elements connected to said shaft on an axial portion thereof and extending into the ring of material formed on the inside wall of the cylindrical mixing container when said shaft is operated at a considerably supercritical speed, said elements being in the form of mixing rods extending into the ring of material, each of said rods being provided with at least one groove extending in the lengthwise direction, each of said grooves being open outwardly along its entire length and each of said grooves communicating with the interior of said mixer shaft for allowing dispensing of glue into the ring of material; and means for ensuring air vorticization in said cylinder; whereby fibers may be substantially homogeneously coated while avoiding substantial jamming and lumping of the fibers in the mixing container.
Claim 3
Dependent Claim
47 words
A device in accordance with claim 1 including air transport means operationally connected to said inlet and outlet funnels and said cylinder for causing the fibers to be transported through said inlet funnel, said cylinder, and said outlet funnel and for causing air vorticization in said cylinder.
Claim 4
Dependent Claim
53 words
A device in accordance with claim 1 wherein said ventilator means for ensuring air vorticization in said cylinder comprises a plurality of ventilator ridges mounted on said shaft, said ventilator ridges being distributed along the circumference of said shaft, extending radially therefrom and each extending over a large portion of the length thereof.
Claim 5
Dependent Claim
19 words
A device in accordance with claim 1 wherein said mixing tools are in the form of outwardly tapering rods.
Claim 6
Dependent Claim
21 words
A device in accordance with claim 4 wherein said mixing rods extend to the vicinity of the wall of said container.
Claim 7
Dependent Claim
25 words
A device in accordance with claim 3 wherein said mixing tools are in the form of outwardly tapering rods replaceably mounted on said ventilator ridges.
Claim 8
Independent Claim
252 words
A device for continuous coating of fibers, comprising: a horizontally mounted cylindrical mixing container; an inlet funnel entering into one end of said container; an outlet funnel connected to the other end of said container; a mixing shaft mounted coaxially within said container, said shaft being at least partially hollow; drive means connected to said mixing shaft for driving said shaft at considerably supercritical speeds; glue feed means for feeding glue into at least a portion of the interior of said shaft; mixing tools connected to said shaft at least on an axial portion thereof; means for ensuring air vorticization in said cylindrical mixing container including a plurality of ventilator ridges mounted on said shaft, said ventilator ridges being distributed along the circumference of said shaft, extending radially therefrom and each extending over a large portion of the length thereof; glue agitating elements connected to said shaft on an axial portion thereof and extending into the ring of material formed on the inside wall of the cylindrical mixing chamber when said shaft is operated at a considerably supercritical speed, said elements being in the form of outwardly tapering mixing rods extending into the ring of material and being replaceably mounted on said ventilator ridges, said rods being each provided with at least one groove extending in the lengthwise direction and communicating with the interior of said mixer shaft, thereby allowing dispensing of glue into the ring of material; and mixing rod support means for mounting said mixing rods on said ventilator ridges.
Claim 9
Independent Claim
252 words
A device for continuous coating of fibers, comprising: a horizontally mounted cylindrical mixing container; an inlet funnel entering into one end of said container; an outlet funnel connected to the other end of said container; a mixing shaft mounted coaxially within said container, said shaft being at least partially hollow; drive means connected to said mixing shaft for driving said shaft at considerably supercritical speeds; glue feed means for feeding glue into at least a portion of the interior of said shaft; mixing tools connected to said shaft at least on an axial portion thereof; means for ensuring air vorticization in said cylindrical mixing container including a plurality of ventilator ridges mounted on said shaft, said ventilator ridges being distributed along the circumference of said shaft, extending radially therefrom and each extending over a large portion of the length thereof; glue agitating elements connected to said shaft on an axial portion thereof and extending into the ring of material formed on the inside wall of the cylindrical mixing chamber when said shaft is operated at a considerably supercritical speed, said elements being in the form of outwardly tapering mixing rods extending into the ring of material and being replaceably mounted on said ventilator ridges, said rods being each provided with at least one groove extending in the lengthwise direction and communicating with the interior of said mixer shaft, thereby allowing dispensing of glue into the ring of material; and mixing rod support means for mounting said mixing rods on said ventilator ridges.
Claim 10
Dependent Claim
22 words
A device in accordance with claim 7 wherein said mixing rod support means supports said mixing rod in a radially displaceable manner.
Claim 11
Dependent Claim
46 words
A device in accordance with claim 8 wherein said mixing rod support means comprises a support mounted laterally on said ventilator ridges, a nose projecting laterally from the radially outward side of the ventilator ridge and a spacer replaceably mounted between said nose and said support.
Claim 12
Dependent Claim
37 words
A device in accordance with claim 8 wherein said mixing rod support means comprises a support mounted on the radial end of said ventilator ridges and a spacer replaceably mounted between said support and said ventilator ridge.
Claim 13
Dependent Claim
19 words
A device in accordance with claim 9 wherein said spacer is made in the form of a double wedge.
Claim 14
Dependent Claim
20 words
A device in accordance with claim 3 wherein said ventilator ridges extend radially to approximately half the mixing container radius.
Claim 15
Dependent Claim
73 words
A device in accordance with claim 1 wherein said container has a fiber feed zone in the vicinity of said inlet funnel, a glue feed zone downstream of said fiber feed zone and an aftermixing zone downstream of said glue feed zone for the remainder of the length of said cylinder, wherein said glue agitating elements are mounted on element supports extending over the length of said shaft within the glue feed zone.
Claim 16
Dependent Claim
66 words
A device in accordance with claim 13 wherein said means for ensuring air vorticization in said cylinder comprises a plurality of ventilator ridges mounted on said shaft, said ventilator ridges being distributed along the circumference of said shaft, extending radially therefrom and each extending over a large portion of the length thereof, and wherein said element supports are mounted on said shaft between said ventilator ridges.
Claim 17
Dependent Claim
20 words
A device in accordance with claim 1 wherein said glue agitating elements are in the form of outwardly tapering rods.
Claim 18
Dependent Claim
22 words
A device in accordance with claim 1 wherein said glue agitating elements extend to the vicinity of the wall of said container.
Claim 19
Independent Claim
210 words
A device for continuous coating of fibers, comprising: a horizontally mounted cylindrical mixing container; an inlet funnel entering into one end of said container; an outlet funnel connected to the other end of said container; a mixing shaft mounted coaxially within said container, said shaft being at least partially hollow; drive means connected to said mixing shaft for driving said shaft at considerably supercritical speeds; glue feed means for feeding glue into at least a portion of the interior of said shaft; mixing tools connected to said shaft at least on an axial portion thereof; glue agitating elements connected to said shaft on an axial portion thereof and extending into the ring of material formed on the inside wall of the cylindrical mixing container when said shaft is operated at a considerably supercritical speed, said elements being in the form of mixing rods extending into the ring of material, said rods being each provided with laterally located grooves as viewed in the direction of rotation of said shaft, the depths of said grooves decreasing outwardly, the grooves extending in the lengthwise direction and communicating with the interior of said mixer shaft, thereby allowing dispensing of glue into the ring of material; and means for ensuring air vorticization in said cylinder.
Claim 20
Independent Claim
210 words
A device for continuous coating of fibers, comprising: a horizontally mounted cylindrical mixing container; an inlet funnel entering into one end of said container; an outlet funnel connected to the other end of said container; a mixing shaft mounted coaxially within said container, said shaft being at least partially hollow; drive means connected to said mixing shaft for driving said shaft at considerably supercritical speeds; glue feed means for feeding glue into at least a portion of the interior of said shaft; mixing tools connected to said shaft at least on an axial portion thereof; glue agitating elements connected to said shaft on an axial portion thereof and extending into the ring of material formed on the inside wall of the cylindrical mixing container when said shaft is operated at a considerably supercritical speed, said elements being in the form of mixing rods extending into the ring of material, said rods being each provided with laterally located grooves as viewed in the direction of rotation of said shaft, the depths of said grooves decreasing outwardly, the grooves extending in the lengthwise direction and communicating with the interior of said mixer shaft, thereby allowing dispensing of glue into the ring of material; and means for ensuring air vorticization in said cylinder.
Claim 21
Dependent Claim
40 words
A device in accordance with claim 1 wherein said glue agitating elements comprise mixing rods each provided with a groove located in front as viewed in the direction of rotation of said shaft, the depth of said groove decreasing outwardly.
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) | 1980-02-08 | 1980-08-09 | 1981-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-08 | 1984-08-09 | 1985-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-08 | 1988-08-09 | 1989-02-08 | $7700.00 | Window Closed / Lapsed |