US3665695A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Textile machine
Assignee: Electrospin Corp
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Filing: 1970-08-25
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Granted: 1972-05-30
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Expires: 1990-08-25
Abstract
Abstract An electrostatic spinning apparatus in which the electrostatic field through which textile fibers are caused to flow is enhanced, and has a stabilized configuration by minimizing the transient charge accumulation in the area adapted to receive the fibers and by mitigating air turbulence so as not to disrupt the desired flow path of the fibers.
Inventors
- 👤 Richard A Amato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:39
CPC Classifications
D; D01; D01H; D01H4/00; D01H4/04; D01H4/08; D01H4/28
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
126 words
An open end spinning apparatus for textile fibers having a fiber advancing device and a fiber twisting device rotatably carried in a support housing spaced from said advancing device by a gap, said twisting device having a fiber inlet end and a yarn discharge end with means intermediate said ends for twisting and spinning said fibers into yarn, means establishing an electrostatic field across said gap between said advancing device and twisting device for transporting said fibers from said advancing device to the receiving end of said twisting device, and a body of dielectric material interposed between said advancing device and said twisting device within said electrostatic field, said body of diElectric material having a configuration substantially conforming to the equipotential surfaces of said electrostatic field.
Claim 2
Dependent Claim
126 words
An open end spinning apparatus for textile fibers having a fiber advancing device and a fiber twisting device rotatably carried in a support housing spaced from said advancing device by a gap, said twisting device having a fiber inlet end and a yarn discharge end with means intermediate said ends for twisting and spinning said fibers into yarn, means establishing an electrostatic field across said gap between said advancing device and twisting device for transporting said fibers from said advancing device to the receiving end of said twisting device, and a body of dielectric material interposed between said advancing device and said twisting device within said electrostatic field, said body of diElectric material having a configuration substantially conforming to the equipotential surfaces of said electrostatic field.
Claim 3
Dependent Claim
84 words
The apparatus defined in claim 1 wherein said field-establishing means includes an annular electrode surrounding said twisting device and wherein the dielectric body is annular and coaxial with said annular electrode and the exposed surface of said dielectric body opposed to said fiber advancing device across said gap has a configuration substantially conforming to the equipotential surfaces of said electrostatic field from said annular electrode, thereby precluding resultant change in the direction of the electric field vectors at the surface of said annular body.
Claim 4
Dependent Claim
32 words
The apparatus defined in claim 2 wherein said electrode and dielectric body have substantially concentric surfaces in the form of segments of spheres opposed to said fiber advancing device across said gap.
Claim 5
Dependent Claim
22 words
The apparatus defined in claim 1 wherein the dielectric constant of said dielectric material is in the order of 3 to 4.
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) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |