Patent US4608212A successfully refreshed from Google Patents.
US4608212A
Expired / Lapsed
US
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Method for the electrostatic treatment of monofilaments
Assignee: Individual
•
Filing: 1984-02-16
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Granted: 1986-08-26
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Expires: 2004-02-16
Abstract
Abstract Method for effecting the electrostatically induced thermal modification and disruptive surface deformation of liquid monofilamentous materials in a gaseous environment.
Inventors
- 👤 Robert E. Isner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:24
CPC Classifications
D; D01; D01D; D01D10/00; D01D5/00; D01D5/253
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
169 words
In the formation of fibers wherein a continuous lineal monofilament is emitted in liquid state from a molten reservoir thereof into a gaseous environment, the steps of directing said liquid monofilament into surrounding downwardly flowing relation around an elongated needle-like electrode element dependent from the locus of liquid monofilament emission from said reservoir. subjecting a portion of the surface of said emitted continuous liquid monofilament to a selectively directed unidirectional electrostatic force field having one terminus adjacent the dependent end of said needle-like electrode element and a second terminus at an adjacent electrode element disposed in transverse spaced relation with the dependent terminal end of said needle-like electrode, said selectively directed electrostatic force field being of a magnitude sufficient to effect a localized surface disruptive and outwardly radially directed deformation of such portion of the perimetric surface of said flowing monofilament and concurrently subjecting said deformed surface portion to an electrostatically induced reduction of the surface temperature to accelerate its conversion in perimetrically deformed integral condition to solid state.
Claim 2
Dependent Claim
169 words
In the formation of fibers wherein a continuous lineal monofilament is emitted in liquid state from a molten reservoir thereof into a gaseous environment, the steps of directing said liquid monofilament into surrounding downwardly flowing relation around an elongated needle-like electrode element dependent from the locus of liquid monofilament emission from said reservoir. subjecting a portion of the surface of said emitted continuous liquid monofilament to a selectively directed unidirectional electrostatic force field having one terminus adjacent the dependent end of said needle-like electrode element and a second terminus at an adjacent electrode element disposed in transverse spaced relation with the dependent terminal end of said needle-like electrode, said selectively directed electrostatic force field being of a magnitude sufficient to effect a localized surface disruptive and outwardly radially directed deformation of such portion of the perimetric surface of said flowing monofilament and concurrently subjecting said deformed surface portion to an electrostatically induced reduction of the surface temperature to accelerate its conversion in perimetrically deformed integral condition to solid state.
Claim 3
Dependent Claim
119 words
In the formation of fibers wherein a continuous lineal monofilament is emitted in liquid state from a molten reservoir thereof into a gaseous environment, the steps of directing said liquid monofilament into surrounding flowing relation around an elongate needle-like electrode element dependent from the locus of liquid monofilament emission from said reservoir, subjecting a portion of the surface of said continuous liquid mnofilament to a selectively directed transverse unidirectional electrostatic force field having one terminus at the dependent terminal end of said needle-like electrode element and of a magnitude sufficient to effect a localized and radially outwardly directed deformation of such portion of the perimetric surface of said continuous flowing monofilament to produce a radially extending hair-like appendage thereon.
Claim 4
Dependent Claim
119 words
In the formation of fibers wherein a continuous lineal monofilament is emitted in liquid state from a molten reservoir thereof into a gaseous environment, the steps of directing said liquid monofilament into surrounding flowing relation around an elongate needle-like electrode element dependent from the locus of liquid monofilament emission from said reservoir, subjecting a portion of the surface of said continuous liquid mnofilament to a selectively directed transverse unidirectional electrostatic force field having one terminus at the dependent terminal end of said needle-like electrode element and of a magnitude sufficient to effect a localized and radially outwardly directed deformation of such portion of the perimetric surface of said continuous flowing monofilament to produce a radially extending hair-like appendage thereon.
Claim 5
Dependent Claim
30 words
The method as set forth in claim 2 wherein said electrostatic force field concomitantly reduces the temperature of said deformed surface portion to accelerate the setting thereof in deformed condition.
Claim 6
Dependent Claim
52 words
The method as set forth in claim 2 including the step of subjecting said liquid monofilament to an auxiliary electrostatic force field during its passage from the locus of emission thereof and the dependent end of the needle-like electrode element to thermally modify its surface temperature prior to electrostatically induced deformation thereof.
Claim 7
Dependent Claim
102 words
In the formation of monofilamentous fiber material wherein a continuous lineal monofilament is emitted in liquid state from a molten reservoir thereof into a gaseous environment; the steps of directing said liquid monofilament into downwardly flowing surrounding relation around an elongate needle-like electrode element of non-circular cross section dependent from the locus of liquid monofilament emission from said reservoir and subjecting the portion of said downwardly flowing filamentous material surrounding said needle-like electrode element to a unidirectional electrostatic field from a second electrode element disposed in spaced relation with said elongated needle-like electrode to accelerate the reduction of the surface temperature thereof.
Claim 8
Dependent Claim
102 words
In the formation of monofilamentous fiber material wherein a continuous lineal monofilament is emitted in liquid state from a molten reservoir thereof into a gaseous environment; the steps of directing said liquid monofilament into downwardly flowing surrounding relation around an elongate needle-like electrode element of non-circular cross section dependent from the locus of liquid monofilament emission from said reservoir and subjecting the portion of said downwardly flowing filamentous material surrounding said needle-like electrode element to a unidirectional electrostatic field from a second electrode element disposed in spaced relation with said elongated needle-like electrode to accelerate the reduction of the surface temperature thereof.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-08-25 | 1990-02-24 | 1990-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-25 | 1994-02-24 | 1994-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-25 | 1998-02-24 | 1998-08-26 | $7700.00 | Window Closed / Lapsed |