US3628931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus having rotating bushing for forming fibers
Assignee: Owens Corning
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Filing: 1969-06-02
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Granted: 1971-12-21
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Expires: 1989-06-02
Abstract
Abstract Apparatus is provided for forming fibers from a heat-softenable, filament-forming viscous liquid. A bushing is in the form of a hollow, cylindrical, rotating body having a spirally contoured outer surface, with a right-hand helix at one end and a left-hand helix at the other end, and with inlet openings spaced around an intermediate portion. Means are provided at one end to rotate the bushing and orifices are provided at the other end through which fibers are attenuated. The bushing is located in a liquid-filled chamber, the liquid being fed under pressure by the helixes to the inlet openings where it is forced inwardly and subsequently subdivided into fibers through the orifices. The orifices can be located in a circular pattern to form a hollow cone of fibers attenuated therefrom, with means located below the center of the circular pattern for supplying a coating material to the filaments or for feeding a filamentary core to the center of the collected filaments.
Inventors
- 👤 Robert G Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:56
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/08
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
72 words
Apparatus according to claim 1 wherein said inlet opening is located at an intermediate portion of said body wall and said forcing means comprises a pair of helical flanges extending outwardly from the wall of said rotatable body at opposite end portions thereof, said helical flanges having opposite lead angles whereby liquid near the ends of said body is forced toward the intermediate opening in said body as said body is rotated.
Claim 2
Dependent Claim
31 words
Apparatus according to claim 1 characterized further by said supply means including means for supplying the liquid to two spaced portions of said chamber near end portions of said rotatable body.
Claim 3
Dependent Claim
25 words
Apparatus according to claim 3 characterized by flow control means for controlling the flow of liquid to both of the spaced portions of said chamber.
Claim 4
Dependent Claim
42 words
Apparatus according to claim 1 characterized further by said seal comprising a circular outer flange extending from the lower portion of said body and forming a dynamic seal to prevent passage of the liquid around said body and out of said chamber.
Claim 5
Dependent Claim
43 words
Apparatus according to claim 1 characterized further by said rotating means comprising said rotatable body having an axially positioned shaft at one end thereof extending through said chamber forming means, and means located outside said chamber for rotating said shaft and said body.
Claim 6
Dependent Claim
45 words
Apparatus according to claim 1 characterized further by means extending through said rotatable body and terminating in a coating material applicator beyond said body, said applicator being effective to supply coating material to fibers attenuated from the liquid flowing through said orifices in said body.
Claim 7
Dependent Claim
28 words
Apparatus according to claim 1 characterized further by means extending centrally through said hollow body for supplying a filamentary core material centrAlly through fibers attenuated from said body.
Claim 8
Dependent Claim
117 words
Apparatus for controlling and directing a heat-softenable, filament-forming liquid for subsequent subdivision and attenuation into filaments, said apparatus comprising a hollow bushing having a cylindrical wall and a lower end wall, said bushing having an inlet opening in an intermediate portion of said cylindrical wall, means for rotating said bushing, means forming a chamber around said bushing, means for supplying said liquid to said chamber, a plurality of orifices in said lower end wall of said bushing, and means in said chamber located around said bushing for forcing liquid in said chamber toward and through said inlet opening to maintain the liquid in said bushing under pressure to aid the flow of the liquid through said orifices.
Claim 9
Dependent Claim
37 words
Apparatus according to claim 9 characterized further by said rotating means comprising a drive shaft affixed to said bushing and extending outside said chamber, and means located outside said chamber for rotating said shaft and said bushing.
Claim 10
Dependent Claim
52 words
Apparatus according to claim 9 wherein said liquid forcing means comprises a pair of helical flanges extending outwardly from the bushing at opposite end portions thereof, said helical flanges having opposite lead angles whereby liquid near the ends of said bushing is forced toward the intermediate opening when said bushing is rotated.
Claim 11
Dependent Claim
31 words
Apparatus according to claim 9 characterized further by said liquid supply means includes means for supplying the liquid to two spaced portions of said chamber near end portions of said bushing.
Claim 12
Dependent Claim
25 words
Apparatus according to claim 12 characterized by flow control means for controlling the flow of liquid to both of the spaced portions of said chamber.
Claim 13
Dependent Claim
42 words
Apparatus according to claim 9 characterized further by an end of said bushing having a circular outer flange extending therefrom above said orifices and forming a dynamic seal to prevent passage of the liquid around said bushing and out of said chamber.
Claim 14
Dependent Claim
28 words
Apparatus according to claim 9 characterized further by an inner cylindrical wall extending through said bushing and forming a central cylindrical space to receive a central supply member.
Claim 15
Dependent Claim
42 words
Apparatus according to claim 15 characterized further by means extending through said inner cylindrical wall of said bushing and terminating in a coating material applicator beyond said bushing, said applicator being effective to supply coating material to filaments rotating around said applicator.
Claim 16
Dependent Claim
35 words
Apparatus according to claim 15 characterized further by means extending centrally through said inner cylindrical wall of said bushing for supplying a filamentary core material centrally through a cone of filaments attenuated from said bushing.
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) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |