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US3589331A
Expired / Lapsed
US
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Apparatus for coating metallic foil
Assignee: Westinghouse Electric Corp
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Filing: 1969-04-04
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Granted: 1971-06-29
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Expires: 1989-04-04
Abstract
Abstract Apparatus for uniformly coating metallic foil with liquid insulating material, wherein air pressure is used to gently press the foil against a coating applicator roll. The air pressure against the foil enables it to be uniformly coated, without disturbing a liquid coating which may already have been applied to the side subjected to the air pressure.
Inventors
- 👤 Dean C Westervelt
- 👤 William S Gorton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:26
CPC Classifications
B; B05; B05C; B05C1/00; B05C1/04; B05C1/08; B05C1/0843; B05C1/0826; B05C9/00; B05C9/04; H; H01; H01B; H01B13/00; H01B13/06; H01B13/16
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
19 words
The apparatus of claim 1 including means for drying and curing the liquid insulating means on the metallic foil.
Claim 2
Dependent Claim
52 words
The apparatus of claim 1 wherein the number and size of the apertures, the pressure of the air supplied to the air pad, and the spacing from the air pad to the foil, are selected to provide a pressure against the foil which is between .05 and 1 ounces per square inch.
Claim 3
Dependent Claim
30 words
The apparatus of claim 1 wherein the means which extend outwardly from the manifold define a plurality of partially closed pressure chambers, each containing at least one of the apertures.
Claim 4
Dependent Claim
233 words
Apparatus for uniformly applying a coating of liquid insulating means to the first and second sides of meTallic foil, comprising: first and second spaced roller means, means for applying liquid insulating means to said first and second roller means, metallic foil having first and second sides, means for moving the first and second sides of said metallic foil over a predetermined portion of said first and second spaced roller means, respectively, to sequentially coat the first and second sides of said metallic foil with liquid insulating means, and means for pressing the first and second sides of the metallic foil into intimate contact with the first and second roller means, respectively, without disturbing the liquid coating on the first side of the metallic foil, including first and second air pad members spaced predetermined dimensions from the second and first sides of the metallic foil, respectively, adjacent to the first and second roller means, respectively, and means for supplying air to said first and second air pad members, said first and second air pad members each including a manifold having a plurality of apertures therein which direct air against the metallic foil, at least said second air pad member including means disposed on its manifold which extend outwardly therefrom to at least partially surround the plurality of apertures and define at least one partially closed pressure chamber, when disposed adjacent to the metallic foil.
Claim 5
Dependent Claim
19 words
The apparatus of claim 5 including means for drying and curing the liquid insulating means on the metallic foil.
Claim 6
Dependent Claim
36 words
The apparatus of claim 5 wherein the means which extends outwardly from the manifold of the second air pad member define a plurality of partially closed pressure chambers, each containing at least one of the apertures.
References Cited (Backward Citations)
US1936651A
Cited
US2252345A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |