Patent US4227906A successfully refreshed from Google Patents.
US4227906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Environmental control for mineral fiber-forming
Assignee: Owens Corning Fiberglas Technology Inc
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Filing: 1976-07-09
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Granted: 1980-10-14
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Expires: 1996-07-09
Abstract
Abstract A mineral fiber-forming bushing is disclosed in which sidewalls containing at least one opening extend continuously downwardly from the bushing bottom wall to define a forming chamber beneath the bushing. A fluid is directed toward the bushing bottom wall and the exit of the fluid through the opening is controlled. The control of fluid flow can control the local environmental conditions both within the forming chamber and on the bushing bottom wall.
Inventors
- 👤 Elmer P. Rieser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:49
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/02; C03B37/0203; C03B37/0209; C03B37/0213
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
67 words
A method of making fibers from molten mineral material comprising: (a) attenuating fibers from a bushing, said bushing having a bottom wall adapted with a plurality of orifices; (b) directing a fluid toward said bushing bottom wall from a fluid supply means; (c) educting a portion of said fluid from a locus intermediate said bushing bottom wall and said fluid supply means; and, (d) recovering said fibers.
Claim 2
Independent Claim
67 words
A method of making fibers from molten mineral material comprising: (a) attenuating fibers from a bushing, said bushing having a bottom wall adapted with a plurality of orifices; (b) directing a fluid toward said bushing bottom wall from a fluid supply means; (c) educting a portion of said fluid from a locus intermediate said bushing bottom wall and said fluid supply means; and, (d) recovering said fibers.
Claim 3
Dependent Claim
14 words
The method of claim 1 in which the educting of said fluid is controlled.
Claim 4
Dependent Claim
41 words
The method of claim 2 in which said bushing bottom wall has a sidewall projecting downwardly and said portion of the fluid is educted through an opening in said sidewall and in which a pressure differential is established across said opening.
Claim 5
Dependent Claim
29 words
The method of claim 3 wherein said sidewall is adapted with a plurality of openings, said openings being adapted with means for controlling the amount of fluid passing therethrough.
Claim 6
Dependent Claim
30 words
The method of claim 4 wherein portions of said bottom wall are at unlike temperatures and the quantity of fluid exiting from said openings is controlled responsive to said temperatures.
Claim 7
Dependent Claim
20 words
The method of claim 1 in which a portion of the educted fluid is redirected toward said bushing bottom wall.
Claim 8
Independent Claim
87 words
A method of making fibers from molten mineral material comprising: a. attenuating fibers from a bushing, said bushing having a bottom wall adapted with a plurality of orifices through which said fibers are drawn, and portions of said bottom wall being at unlike temperatures; b. directing a fluid toward said bushing bottom wall; c. educting a portion of said fluid from said bottom wall through a plurality of means for educting; and, d. controlling the flow of fluid through said means for educting responsive to said temperatures.
Claim 9
Independent Claim
87 words
A method of making fibers from molten mineral material comprising: a. attenuating fibers from a bushing, said bushing having a bottom wall adapted with a plurality of orifices through which said fibers are drawn, and portions of said bottom wall being at unlike temperatures; b. directing a fluid toward said bushing bottom wall; c. educting a portion of said fluid from said bottom wall through a plurality of means for educting; and, d. controlling the flow of fluid through said means for educting responsive to said temperatures.
Claim 10
Independent Claim
67 words
A method of making fibers from molten mineral material comprising: a. attenuating fibers from a bushing, said bushing having a bottom wall adapted with a plurality of orifices through which said fibers are drawn; b. directing a fluid toward said bottom wall; c. educting at least a portion of said fluid from said bottom wall; and, d. redirecting some of the educted fluid toward said bottom wall.
Claim 11
Independent Claim
67 words
A method of making fibers from molten mineral material comprising: a. attenuating fibers from a bushing, said bushing having a bottom wall adapted with a plurality of orifices through which said fibers are drawn; b. directing a fluid toward said bottom wall; c. educting at least a portion of said fluid from said bottom wall; and, d. redirecting some of the educted fluid toward said bottom wall.
Claim 12
Dependent Claim
101 words
In a bushing for making fibers from molten mineral material, said bushing having a bottom wall containing a plurality of orifices through which said fibers are drawn, sidewalls extending continuously downwardly from said orificed bottom wall to create an open-bottomed forming chamber through which said fibers pass, fluid supply means positioned to direct a flow of fluid toward said bottom wall of said bushing, and at least one opening positioned in said sidewalls of said forming chamber for the exit of at least a portion of said fluid, said opening being positioned intermediate said fluid supply means and said bottom wall.
Claim 13
Dependent Claim
101 words
In a bushing for making fibers from molten mineral material, said bushing having a bottom wall containing a plurality of orifices through which said fibers are drawn, sidewalls extending continuously downwardly from said orificed bottom wall to create an open-bottomed forming chamber through which said fibers pass, fluid supply means positioned to direct a flow of fluid toward said bottom wall of said bushing, and at least one opening positioned in said sidewalls of said forming chamber for the exit of at least a portion of said fluid, said opening being positioned intermediate said fluid supply means and said bottom wall.
Claim 14
Dependent Claim
25 words
The apparatus of claim 9 in which said opening is adapted with means for controlling the exit of fluids from said chamber through said opening.
Claim 15
Dependent Claim
13 words
The apparatus of claim 10 wherein said means for controlling comprises a damper.
Claim 16
Dependent Claim
21 words
The apparatus of claim 10 wherein said means for controlling comprises a means for creating a pressure differential across said opening.
Claim 17
Dependent Claim
36 words
The apparatus of claim 1 wherein said fluid supply means comprises at least one nozzle and a source of fluid, and wherein one of said openings is positioned in said sidewall for each of said nozzles.
Claim 18
Dependent Claim
28 words
The apparatus of claim 1 wherein said apparatus comprises means for removing said fluid from said forming chamber and returning said removed fluid to said fluid supply means.
Claim 19
Dependent Claim
46 words
The apparatus of claim 1 wherein said fluid supply means comprises a manifold surrounding said forming chamber, said manifold having at least one manifold opening for directing said flow of fluid toward said bushing, said sidewall opening being positioned in said sidewall above said manifold opening.
Claim 20
Dependent Claim
16 words
The apparatus of claim 1 wherein said bushing bottom wall protrudes downwardly into said forming chamber.
Claim 21
Dependent Claim
79 words
In a bushing for making fibers from molten mineral material, said bushing having a bottom wall containing a plurality of orifices through which said fibers are drawn, portions of said bottom wall being at unlike temperatures, fluid supply means positioned to direct a flow of fluid toward said bottom wall, a plurality of means for educting at least a portion of said fluid, and means for controlling the flow of fluid through the educting means responsive to said temperatures.
Claim 22
Dependent Claim
79 words
In a bushing for making fibers from molten mineral material, said bushing having a bottom wall containing a plurality of orifices through which said fibers are drawn, portions of said bottom wall being at unlike temperatures, fluid supply means positioned to direct a flow of fluid toward said bottom wall, a plurality of means for educting at least a portion of said fluid, and means for controlling the flow of fluid through the educting means responsive to said temperatures.
Claim 23
Dependent Claim
68 words
In a bushing for making fibers from molten mineral material, said bushing having a bottom wall containing a plurality of orifices through which said fibers are drawn, fluid supply means positioned to direct a flow of fluid toward said bottom wall, means for educting at least a portion of said fluid from said bottom wall, and means for redirecting some of the educted fluid toward said bottom wall.
Claim 24
Dependent Claim
68 words
In a bushing for making fibers from molten mineral material, said bushing having a bottom wall containing a plurality of orifices through which said fibers are drawn, fluid supply means positioned to direct a flow of fluid toward said bottom wall, means for educting at least a portion of said fluid from said bottom wall, and means for redirecting some of the educted fluid toward said bottom wall.
Claim 25
Dependent Claim
71 words
In a bushing for making fibers from molten mineral material, said bushing having a bottom wall containing a plurality of orifices through which said fibers are drawn, fluid supply means positioned to direct a flow of fluid toward said bottom wall, and means for educting at least a portion of said fluid from said bottom wall, said means for educting being positioned intermediate said bottom wall and said fluid supply means.
Claim 26
Dependent Claim
71 words
In a bushing for making fibers from molten mineral material, said bushing having a bottom wall containing a plurality of orifices through which said fibers are drawn, fluid supply means positioned to direct a flow of fluid toward said bottom wall, and means for educting at least a portion of said fluid from said bottom wall, said means for educting being positioned intermediate said bottom wall and said fluid supply means.
References Cited (Backward Citations)
US3257181A
Cited
CA799381A
Cited
SU179874A1
Cited
US2821744A
Cited
US3248192A
Cited
US3232730A
Cited
US4105424A
Cited
US4052183A
Cited
US3905790A
Cited
JPS517218A
Cited
US3969099A
Cited
US4033742A
Cited
US4030901A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-14 | 1984-04-14 | 1984-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-14 | 1988-04-14 | 1988-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-14 | 1992-04-14 | 1992-10-14 | $7700.00 | Window Closed / Lapsed |