Patent US4066804A successfully refreshed from Google Patents.
Patent US4300929A successfully refreshed from Google Patents.
US4300929A
Expired / Lapsed
US
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Method for forming glass fibers
Assignee: Owens Corning Fiberglas Technology Inc
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Filing: 1979-09-24
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Granted: 1981-11-17
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Expires: 1999-09-24
Abstract
Abstract A method of producing glass fibers is disclosed in which two streams of air are introduced into contact with the newly formed strands, one stream being introduced between the bushing and the size applicator and a second stream being introduced between the applicator and the gathering shoe.
Inventors
- 👤 Grant F. Carruth
- 👤 Michael T. Pellegrin
- 👤 Russell R. Felch
- 👤 Donald R. Atkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:59
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/02; C03B37/0203; C03B37/0206; C03B37/0213
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
120 words
In the process of producing continuous glass fibers in which streams of glass are attentuated as filaments from a bushing positioned within a forming zone, the filaments are passed through pre-pad sprays and sized by a size applicator and gathered by a gathering shoe, the improvement comprising introducing from about 200 to about 600 CFM of air into contact with the filaments over the length of the filaments extending from the bottom of said bushing to said pre-pad sprays and introducing from about 100 to about 300 CFM of air into contact with the filaments over the length of the filaments extending from the pre-pad sprays to said gathering shoe, the air quantities being introduced angularly downward from the horizontal.
Claim 2
Dependent Claim
120 words
In the process of producing continuous glass fibers in which streams of glass are attentuated as filaments from a bushing positioned within a forming zone, the filaments are passed through pre-pad sprays and sized by a size applicator and gathered by a gathering shoe, the improvement comprising introducing from about 200 to about 600 CFM of air into contact with the filaments over the length of the filaments extending from the bottom of said bushing to said pre-pad sprays and introducing from about 100 to about 300 CFM of air into contact with the filaments over the length of the filaments extending from the pre-pad sprays to said gathering shoe, the air quantities being introduced angularly downward from the horizontal.
Claim 3
Dependent Claim
49 words
The method of claim 1 in which the pre-pad sprays are positioned a distance of from about 12 to about 24 inches from the bottom of said bushing and the distance from the bottom of said bushing to said applicator size from about 28 inches to about 42 inches.
Claim 4
Dependent Claim
56 words
The method of claim 1 in which said first quantity of air is introduced downwardly at an angle within the range of from about 15° to about 30° from the horizontal and said second quantity of air is introduced downwardly at an angle within the range of from about 45° to about 90° from the horizontal.
Claim 5
Dependent Claim
38 words
The method of claim 1 in which said first portion constitutes about two thirds of the total air introduced into said process and said second portion constitutes about one third of the total air introduced into said process.
Claim 6
Dependent Claim
56 words
The method of claim 2 in which said first quantity of air is introduced downwardly at an angle within the range of from about 15° to about 30° from the horizontal and said second quantity of air is introduced downwardly at an angle within the range of from about 45° to about 90° from the horizontal.
Claim 7
Dependent Claim
18 words
The method of claim 1 in which a third quantity of air is introduced into said forming zone.
Claim 8
Dependent Claim
17 words
The method of claim 6 in which said third quantity is introduced circumferentially of said forming zone.
Claim 9
Dependent Claim
228 words
In the process of producing continuous glass fibers in which streams of glass are attentuated as filaments from a bushing positioned within a forming zone, the filaments are passed through pre-pad sprays and sized by a size applicator and gathered by a gathering shoe, the improvement comprising introducing a first quantity of air into contact with said filaments between said bushing and said pre-pad sprays and a second quantity of air into contact with said filaments between said pre-pad sprays and said size applicator, said first quantity of air and said second quantity of air being separate and distinct quantities of air, the pre-pad sprays being positioned a distance of from about 12 to about 24 inches from the bottom of said bushing, the distance from the bottom of said bushing to said size applicator being from about 28 inches to about 42 inches, said first quantity of air being introduced downwardly at an angle of about 22° below the horizontal and said second quantity of air being introduced downwardly at an angle of about 45° below the horizontal, said first quantity of air being introduced along a length of about 18 inches of the filaments at a rate of about 400 CFM and said second quantity of air being introduced along a length of about 18 inches of the filaments at a rate of about 200 CFM.
Claim 10
Dependent Claim
228 words
In the process of producing continuous glass fibers in which streams of glass are attentuated as filaments from a bushing positioned within a forming zone, the filaments are passed through pre-pad sprays and sized by a size applicator and gathered by a gathering shoe, the improvement comprising introducing a first quantity of air into contact with said filaments between said bushing and said pre-pad sprays and a second quantity of air into contact with said filaments between said pre-pad sprays and said size applicator, said first quantity of air and said second quantity of air being separate and distinct quantities of air, the pre-pad sprays being positioned a distance of from about 12 to about 24 inches from the bottom of said bushing, the distance from the bottom of said bushing to said size applicator being from about 28 inches to about 42 inches, said first quantity of air being introduced downwardly at an angle of about 22° below the horizontal and said second quantity of air being introduced downwardly at an angle of about 45° below the horizontal, said first quantity of air being introduced along a length of about 18 inches of the filaments at a rate of about 400 CFM and said second quantity of air being introduced along a length of about 18 inches of the filaments at a rate of about 200 CFM.
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) | 1984-11-16 | 1985-05-18 | 1985-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-16 | 1989-05-18 | 1989-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-16 | 1993-05-18 | 1993-11-17 | $7700.00 | Window Closed / Lapsed |