US4363645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Annular bushing for forming glass fibers
Assignee: Owens Corning
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Filing: 1981-07-30
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Granted: 1982-12-14
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Expires: 2001-07-30
Abstract
Abstract Apparatus and method of producing glass fibers employing a tipped or tipless annular bushing plate from which fibers are drawn as an annular array. A cooling gas, such as air, is directed into contact with the bushing plate and with either, or both, the exterior and interior of the annular array.
Inventors
- 👤 Arnold J. Eisenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:33
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/02; C03B37/0203; C03B37/0213; C03B37/08
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
40 words
A glass fiber-forming bushing comprising an annular orificed bushing plate, a center portion positioned within the annular plate and at least one port opening from said center portion into a manifold and at least one port opening from said manifold.
Claim 2
Dependent Claim
40 words
A glass fiber-forming bushing comprising an annular orificed bushing plate, a center portion positioned within the annular plate and at least one port opening from said center portion into a manifold and at least one port opening from said manifold.
Claim 3
Dependent Claim
15 words
The bushing of claim 1 comprising a plurality of ports opening from said center portion.
Claim 4
Dependent Claim
21 words
The bushing of claim 2 in which said plurality of ports open into a sparger positioned centrally of said annular plate.
Claim 5
Dependent Claim
32 words
The bushing of claim 1 comprising a gas discharge manifold adapted to discharge gas inwardly towards said center portion of said plate and into contact with glass strands drawn from said bushing.
Claim 6
Dependent Claim
29 words
The bushing of claim 4 comprising a second manifold positioned circumferentially of the orificed area of said bushing plate adapted to receive gas discharged from said gas discharge manifold.
Claim 7
Dependent Claim
76 words
A glass fiber-forming bushing comprising an annular orificed bushing plate, a center portion positioned within the annular plate, at least one port opening from said center portion to the exterior of said bushing, a first manifold positioned in spaced relationship to said bushing and adapted to discharge gas into contact with said bushing plate and a second manifold positioned intermediate said bushing plate and said first manifold and adapted to withdraw gas along said bushing plate.
Claim 8
Dependent Claim
76 words
A glass fiber-forming bushing comprising an annular orificed bushing plate, a center portion positioned within the annular plate, at least one port opening from said center portion to the exterior of said bushing, a first manifold positioned in spaced relationship to said bushing and adapted to discharge gas into contact with said bushing plate and a second manifold positioned intermediate said bushing plate and said first manifold and adapted to withdraw gas along said bushing plate.
Claim 9
Independent Claim
59 words
A method of producing glass fibers which comprises drawing glass fibers as an annular array from an annular bushing having a center portion positioned within an annular portion of said bushing, introducing a gas into contact with the outer periphery of said annular array, and drawing said gas through said array and through a center portion of said bushing.
Claim 10
Independent Claim
59 words
A method of producing glass fibers which comprises drawing glass fibers as an annular array from an annular bushing having a center portion positioned within an annular portion of said bushing, introducing a gas into contact with the outer periphery of said annular array, and drawing said gas through said array and through a center portion of said bushing.
Claim 11
Dependent Claim
21 words
The method of claim 7 in which said gas is introduced into contact with the inner periphery of said annular array.
Claim 12
Dependent Claim
32 words
The method of claim 7 in which said gas is introduced into contact with the inner periphery of said annular array and gas is withdrawn from said center portion of said bushing.
Claim 13
Independent Claim
54 words
A method of producing glass fibers which comprises drawing glass fibers as an annular array from an annular bushing having a center portion positioned within an annular portion of said bushing, introducing a gas into contact with the inner periphery of said array and withdrawing said gas through a center portion of said bushing.
Claim 14
Independent Claim
54 words
A method of producing glass fibers which comprises drawing glass fibers as an annular array from an annular bushing having a center portion positioned within an annular portion of said bushing, introducing a gas into contact with the inner periphery of said array and withdrawing said gas through a center portion of said bushing.
Claim 15
Independent Claim
96 words
A method of producing glass fibers which comprises drawing glass fibers as an annular array from an annular bushing having a center portion positioned with an annular portion of said bushing, introducing a gas into contact with the outer periphery of said array and into the annular portion of said bushing and withdrawing a first portion of the gas through the center portion of said bushing and withdrawing a second portion of the gas from within said annular array from a locus between the point of introduction of said gas and the face of said bushing.
Claim 16
Independent Claim
96 words
A method of producing glass fibers which comprises drawing glass fibers as an annular array from an annular bushing having a center portion positioned with an annular portion of said bushing, introducing a gas into contact with the outer periphery of said array and into the annular portion of said bushing and withdrawing a first portion of the gas through the center portion of said bushing and withdrawing a second portion of the gas from within said annular array from a locus between the point of introduction of said gas and the face of said bushing.
Claim 17
Dependent Claim
18 words
The method of claim 7 in which said gas is withdrawn from said center portion of 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) | 1985-12-13 | 1986-06-14 | 1986-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-13 | 1990-06-14 | 1990-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-13 | 1994-06-14 | 1994-12-14 | $7700.00 | Window Closed / Lapsed |