Patent US3873291A successfully refreshed from Google Patents.
US3873291A
Expired / Lapsed
US
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Method of producing glass fiber mats
Assignee: Nicofibers Inc
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Filing: 1974-03-29
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Granted: 1975-03-25
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Expires: 1994-03-29
Abstract
Abstract Method of sequentially producing a plurality of glass fiber mats includes continuously drawing glass filaments from a molten glass supply through a plurality of orifices and winding the filaments about the periphery of a rotating drum. A binder solution is intermittently applied to the filaments being wound on the drum. The product which is formed comprises a plurality of separable, concentric glass fiber mats.
Inventors
- 👤 William R Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 01:00
CPC Classifications
D; D04; D04H; D04H3/00; D04H3/02; Y; Y10; Y10S; Y10S242/00; Y10S242/92; Y10T; Y10T442/00; Y10T442/60; Y10T442/659; Y10T442/67
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
156 words
Method of seqUentially producing a plurality of glass fiber mats, comprising: a. continuously drawing glass filaments from a molten glass supply through a plurality of orifices; b. continuously winding the filaments about the periphery of a drum rotating about its axis; and c. intermittently applying a binder solution to the filaments being wound continuously on the drum, the binder solution being applied cyclically to the filaments at predetermined intervals during a first period of time sufficient in duration to form a first integral mat, the binder solution not being applied during a second period of time of predetermined duration such that an integral mat is not formed at a location, and the binder solution being applied cyclically to the filaments at predetermined intervals during a third period of time sufficient in duration to form an overlying second integral mat concentric with and separable from the first mat at said location where no binder solution is applied.
Claim 2
Dependent Claim
156 words
Method of seqUentially producing a plurality of glass fiber mats, comprising: a. continuously drawing glass filaments from a molten glass supply through a plurality of orifices; b. continuously winding the filaments about the periphery of a drum rotating about its axis; and c. intermittently applying a binder solution to the filaments being wound continuously on the drum, the binder solution being applied cyclically to the filaments at predetermined intervals during a first period of time sufficient in duration to form a first integral mat, the binder solution not being applied during a second period of time of predetermined duration such that an integral mat is not formed at a location, and the binder solution being applied cyclically to the filaments at predetermined intervals during a third period of time sufficient in duration to form an overlying second integral mat concentric with and separable from the first mat at said location where no binder solution is applied.
Claim 3
Dependent Claim
27 words
Method according to claim 1, wherein during the first and third periods, the binder solution is applied in cycles of 1 minute ''''on'''' and 1.1 minutes ''''off''''.
Claim 4
Dependent Claim
34 words
Method according to claim 1, wherein during the second period the binder solution is not applied for from about 5 to 12 minutes while the glass filaments are being wound continuously on the drum.
Claim 5
Dependent Claim
31 words
Method according to claim 1, wherein during the second period the binder solution is not applied for about 8.75 minutes while the glass filaments are being continuously wound on the drum.
Claim 6
Dependent Claim
88 words
In a method of producing glass fiber mats by continuously winding glass filaments about a rotating drum, the improvement comprising applying a binder solution at predetermined intervals to the filaments on the drum to form a plurality of concentric integral mats on the drum during periods of time wherein the binder solution is being applied, the mats being separable at a location where no binder solution is applied for a predetermined period of time sufficient in duration to prevent the formation of an integral mat at said location.
Claim 7
Dependent Claim
88 words
In a method of producing glass fiber mats by continuously winding glass filaments about a rotating drum, the improvement comprising applying a binder solution at predetermined intervals to the filaments on the drum to form a plurality of concentric integral mats on the drum during periods of time wherein the binder solution is being applied, the mats being separable at a location where no binder solution is applied for a predetermined period of time sufficient in duration to prevent the formation of an integral mat at said location.
Claim 8
Dependent Claim
31 words
Method according to claim 5, wherein the binder solution is cyclically and uniformly applied to the filaments on the drum during said periods of time wherein the binder solution is applied.
Claim 9
Dependent Claim
17 words
Method according to claim 6, wherein the cycles are of one minute ''''on'''' and 1.1 minutes ''''off''''.
Claim 10
Dependent Claim
31 words
Method according to claim 5, wherein said predetermined period of time sufficient to prevent the formation of an integral mat is of a duration of from about 5 to 12 minutes.
Claim 11
Dependent Claim
28 words
Method according to claim 5, wherein said predetermined period of time sufficient to prevent the formation of an integral mat is of a duration of about 8.75 minutes.
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) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |