Patent US4334144A successfully refreshed from Google Patents.
US4334144A
Expired / Lapsed
US
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Corona effect surface treatment apparatus for sheet
Assignee: Individual
•
Filing: 1980-04-07
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Granted: 1982-06-08
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Expires: 2000-04-07
Abstract
Abstract An apparatus for corona effect surface treatment of sheet materials, comprising a metal electrode and an insulating material coated electrode, between which the materials to be treated are inserted, wherein in the inside of said coated electrode a cooling fluid is caused to flow.
Inventors
- 👤 Ezio Ferrarini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:28
CPC Classifications
H; H05; H05B; H05B7/00; H05B7/16; H01; H01T; H01T19/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
128 words
An apparatus for corona effect surface treatment of sheet materials, comprising an elongated metal electrode and at least one insulating material encased electrode coextensive therewith and spaced therefrom to form a gap therebetween through which the materials to be treated are caused to pass and, supporting means for the electrodes, wherein according to the improvement, said encased electrode comprises a tube of insulating material defining a hollow tubular inner space therein, a conductor within said inner space and coextensive with the electrode and in clearing relationship with said tube, a cooling fluid circulating within said tube and a heat exchanger in communication with said tube and means for circulating said cooling fluid therethrough, and electrical connections for connecting said metal and said encased electrodes to the required polarity.
Claim 2
Independent Claim
128 words
An apparatus for corona effect surface treatment of sheet materials, comprising an elongated metal electrode and at least one insulating material encased electrode coextensive therewith and spaced therefrom to form a gap therebetween through which the materials to be treated are caused to pass and, supporting means for the electrodes, wherein according to the improvement, said encased electrode comprises a tube of insulating material defining a hollow tubular inner space therein, a conductor within said inner space and coextensive with the electrode and in clearing relationship with said tube, a cooling fluid circulating within said tube and a heat exchanger in communication with said tube and means for circulating said cooling fluid therethrough, and electrical connections for connecting said metal and said encased electrodes to the required polarity.
Claim 3
Dependent Claim
102 words
An apparatus according to claim 1, wherein said metal electrode is cylindrical in shape, said encased electrodes are arranged spaced side by side and consecutively connected to form a coil extending over a semi-cylindrical configuration to form a semi-cylindrical skirting member partially surrounding said metal electrode, and wherein said supporting means comprise a frame of insulating material for said encased electrode, a support for said frame and for said metal electrode and hinge means between said support and said frame to allow mutual angular displacements thereof, said hinge means having an axis extending parallel to the longitudinal extension of said metal electrode.
Claim 4
Dependent Claim
48 words
An apparatus according to claim 2, further comprising auxiliary side rollers for guiding the sheet material to be treated said side rollers being supported by said support, pivot means for said support extending in the longitudinal direction of said metal electrode and allowing angular adjustment of said support.
References Cited (Backward Citations)
US2590173A
Cited
BE635191A
Cited
US3308045A
Cited
US3309299A
Cited
US3348022A
Cited
US3294971A
Cited
US3894925A
Cited
US3903426A
Cited
US3755683A
Cited
US3777164A
Cited
US3996122A
Cited
US4145386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-07 | 1985-12-07 | 1986-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-07 | 1989-12-07 | 1990-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-07 | 1993-12-07 | 1994-06-08 | $7700.00 | Window Closed / Lapsed |