US3566833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous coating apparatus
Assignee: Atlantic Richfield Co
•
Filing: 1968-06-28
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Granted: 1971-03-02
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Expires: 1988-06-28
Abstract
Abstract A magnet wire is prepared by first passing a copper wire through a dense cloud of electrostatically charged and finely divided plastic particles such as epoxy powder held within a confined chamber and being created by a spray gun positioned within the chamber and below the elongated member and in combination with a fluidized bed of a similar or a different plastic powder and then passing the electrostatically coated wire through an oven maintained at a temperature sufficiently high to fuse the electrostatically deposited plastic particles thereon to form an insulation film on the wire.
Inventors
- 👤 Norman Percy Beebe
- 👤 Bruce Aubert Madeley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:22
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/20; B05D1/00; B05D1/02; B05D1/04; B05D1/06; B05D1/18; B05D1/22; B05D1/24; H; H01; H01B; H01B13/00; H01B13/0033; B05D1/007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
An apparatus according to claim 1 wherein the spray nozzle is positioned just below the metallic member.
Claim 2
Dependent Claim
66 words
An apparatus according to claim 2 wherein the inlet and the outlet of the chamber each is in the form of an elongated tube slidably mounted on the wall of the chamber and protruding thereinto, said tubes being adjustable to increase or to decrease the exposure of the metallic member within the chamber thereby controlling the thickness of the charged particles deposited on the metallic member.
References Cited (Backward Citations)
US2111853A
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US2711481A
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US2914221A
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US2817765A
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US2859129A
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US2862472A
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Cited
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Cited
US3336903A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |