Patent US4076510A successfully refreshed from Google Patents.
US4076510A
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US
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Methods and apparatus for coating a filament
Assignee: AT&T Inc
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Filing: 1976-12-23
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Granted: 1978-02-28
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Expires: 1996-12-23
Abstract
Abstract A glass fiber is drawn through a rotating body of flowable coating material to apply the material thereon and then is further drawn through a throat section of an open ended cage formed by a plurality of wire strands forming a hyperboloid of rotation. As the glass fiber is drawn through the throat section the previously applied flowable material contacts the wire strands causing a vortex of material which centers the fiber in the throat and distributes the material uniformly and concentrically thereon.
Inventors
- 👤 Jaroslav Mracek
- 👤 Un-Chul Paek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:14
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/12; C03C25/20; D; D06; D06B; D06B1/00; D06B1/10; Y; Y10; Y10S; Y10S118/00; Y10S118/18
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
70 words
A method for applying a viscous fluid material to a continuous filament, comprising the steps of: introducing the material into the volume between the surfaces of a substantially planar member and a conical member rotating thereon to form a substantially planar rotating body of the material; and continuously moving the filament through the material in the plane of the rotating body of material to apply the material to the filament.
Claim 2
Independent Claim
70 words
A method for applying a viscous fluid material to a continuous filament, comprising the steps of: introducing the material into the volume between the surfaces of a substantially planar member and a conical member rotating thereon to form a substantially planar rotating body of the material; and continuously moving the filament through the material in the plane of the rotating body of material to apply the material to the filament.
Claim 3
Dependent Claim
22 words
The method as set forth in claim 1, wherein the substantially planar rotating body of material is formed in a vertical plane.
Claim 4
Dependent Claim
25 words
The method as set forth in claim 1, wherein the filament moves through the material in the same direction as the rotation of the material.
Claim 5
Independent Claim
82 words
An apparatus for uniformly and concentrically coating a continuous filament, of substantially circular cross-section, with a viscous fluid material, comprising: means for forming a substantially planar rotating body of the material; means for forming a vortex of the material in tandem relationship with the rotating body of material; and means for moving the filament through the rotating material in the plane of the rotating body of material and through the central portion of the vortex to uniformly and concentrically coat the filament.
Claim 6
Independent Claim
82 words
An apparatus for uniformly and concentrically coating a continuous filament, of substantially circular cross-section, with a viscous fluid material, comprising: means for forming a substantially planar rotating body of the material; means for forming a vortex of the material in tandem relationship with the rotating body of material; and means for moving the filament through the rotating material in the plane of the rotating body of material and through the central portion of the vortex to uniformly and concentrically coat the filament.
Claim 7
Dependent Claim
79 words
The apparatus as set forth in claim 4, wherein the filament is a continuous glass fiber and the means for forming a substantially planar rotating body of the material comprises: a planar plate; a rotatable conical member having an apex juxtaposed to the planar plate; and means for rotating the conical member as the material is introduced in the volume between the plate and the surface of the conical member to form the substantially planar rotating body of material.
Claim 8
Independent Claim
86 words
A method of coating a continuous filament with a viscous fluid material, comprising the steps of: introducing the material into the volume between the surfaces of a substantially planar member and a conical member rotating thereon to form a substantially planar rotating body of material; drawing the filament through the rotating body of material, in the plane thereof, to apply said material to the filament; and further drawing the filament through the center of a vortex of the material to redistribute the material on the filament.
Claim 9
Independent Claim
86 words
A method of coating a continuous filament with a viscous fluid material, comprising the steps of: introducing the material into the volume between the surfaces of a substantially planar member and a conical member rotating thereon to form a substantially planar rotating body of material; drawing the filament through the rotating body of material, in the plane thereof, to apply said material to the filament; and further drawing the filament through the center of a vortex of the material to redistribute the material on the filament.
Claim 10
Independent Claim
96 words
A method of coating a continuous glass fiber with a viscous fluid material, comprising the steps of: (a) introducing the material between a flat plate and a cone rotating thereon to form a substantially planar rotating body of material; (b) drawing the glass fiber through the rotating body of material, in the plane of the rotating body of material, to apply said material thereon; (c) further drawing the glass fiber through a throat portion of a vortex of the material to redistribute said material on the fiber; and (d) curing the material to harden the coating.
Claim 11
Independent Claim
96 words
A method of coating a continuous glass fiber with a viscous fluid material, comprising the steps of: (a) introducing the material between a flat plate and a cone rotating thereon to form a substantially planar rotating body of material; (b) drawing the glass fiber through the rotating body of material, in the plane of the rotating body of material, to apply said material thereon; (c) further drawing the glass fiber through a throat portion of a vortex of the material to redistribute said material on the fiber; and (d) curing the material to harden the coating.
Claim 12
Dependent Claim
51 words
The method as set forth in claim 7 wherein the coating material is a hot melt material which must be heated prior to step (a) to at least the melting temperature thereof, and the curing step (d) is accomplished by cooling the coating material to a temperature below the melting temperature.
Claim 13
Dependent Claim
32 words
The method as set forth in claim 7 wherein the coating material is flowable at room temperature and the curing step (d) is accomplished by subjecting the coating to an ultra-violet light.
Claim 14
Dependent Claim
83 words
The apparatus as set forth in claim 4, wherein the filament is a continuous glass fiber and the vortex forming means is a distribution cage which is comprised of: a pair of spaced and aligned top and bottom plates, each plate having a central aperture therein; and a plurality of spaced strand sections connecting the top and bottom plates, and which upon rotation of one of the spaced plates relative to the other spaced plate said strand sections define a hyperboloid of rotation.
Claim 15
Dependent Claim
87 words
Apparatus for applying a viscous fluid material to a continuous filament, comprising: a planar plate; a rotatable conical member having an apex juxtaposed to the planar plate; means for rotating the conical member as the material is introduced in the volume between the plate and the surface of the conical member to form a substantially planar rotating body of the material; and means for continuously moving the filament through the material in the plane of the rotating body of material to apply the material to the filament.
Claim 16
Dependent Claim
87 words
Apparatus for applying a viscous fluid material to a continuous filament, comprising: a planar plate; a rotatable conical member having an apex juxtaposed to the planar plate; means for rotating the conical member as the material is introduced in the volume between the plate and the surface of the conical member to form a substantially planar rotating body of the material; and means for continuously moving the filament through the material in the plane of the rotating body of material to apply the material to the filament.
Claim 17
Dependent Claim
31 words
The apparatus as set forth in claim 11 in which the angle between the surfaces of planar plate and the rotatable conical member is equal to or less than three degrees.
Claim 18
Dependent Claim
35 words
The distribution cage as set forth in claim 10, wherein the top and bottom plates have radial slots therein to provide radial access to the central portion of the distribution cage by the continuous filament.
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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) | 1981-02-27 | 1981-08-29 | 1982-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-27 | 1985-08-29 | 1986-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-27 | 1989-08-29 | 1990-02-28 | $7700.00 | Window Closed / Lapsed |