US4153560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corona device and method for using same
Assignee: Hoechst AG
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Filing: 1977-09-28
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Granted: 1979-05-08
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Expires: 1997-09-28
Abstract
Abstract A corona discharge device is disclosed in which a cylindrical shell made of a dielectric material is mounted around a rotatable axle. Electrodes are arranged inside and outside of the shell so as to provide a corona discharge across a material to improve its surface qualities. A method of corona discharge treatment with the above apparatus is also disclosed.
Inventors
- 👤 Peter Dinter
- 👤 Andreas Kolbe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:12
CPC Classifications
H; H01; H01T; H01T19/00
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
117 words
A corona discharge device for charging the surface of a material which comprises: a. a rotatable roll comprising a cylindrical shell made of a dielectric material; b. at least one first electrode located outside said roll; c. at least one second electrode located within said roll, said first and second electrodes being arranged along the cylindrical contour of said shell with said second electrodes within said shell being in contact with said shell, and one of said first or second electrodes being adapted for carrying electrical current and the other being adapted to be grounded as a counter electrode; and d. a spring means for pressing said second electrodes within said shell against the inside surface thereof.
Claim 2
Dependent Claim
117 words
A corona discharge device for charging the surface of a material which comprises: a. a rotatable roll comprising a cylindrical shell made of a dielectric material; b. at least one first electrode located outside said roll; c. at least one second electrode located within said roll, said first and second electrodes being arranged along the cylindrical contour of said shell with said second electrodes within said shell being in contact with said shell, and one of said first or second electrodes being adapted for carrying electrical current and the other being adapted to be grounded as a counter electrode; and d. a spring means for pressing said second electrodes within said shell against the inside surface thereof.
Claim 3
Dependent Claim
30 words
The corona discharge device as defined by claim 1, wherein said rotatable roll further comprises an axle having discs mounted thereon, arranged in spaced relation to support said cylindrical shell.
Claim 4
Dependent Claim
14 words
The corona discharge device as defined by claim 2, wherein said axle is hollow.
Claim 5
Dependent Claim
24 words
The corona discharge device as defined by claim 3, wherein said axle is provided with inlet bores leading to the interior of said shell.
Claim 6
Dependent Claim
19 words
The corona discharge device as defined by claim 4, wherein said cylindrical shell is comprised of reinforced synthetic resin.
Claim 7
Dependent Claim
42 words
The corona discharge device as defined by claim 5, wherein said electrodes within said shell are off-set wtih respect to said electrodes outside said shell such that the corona discharge which results follows an oblique path through the wall of said shell.
Claim 8
Dependent Claim
82 words
The corona discharge device as defined by claim 5, wherein said electrodes inside and outside said shell are arranged such that said electrodes inside and outside said shell are offset from one another and further such that said electrodes are arranged such that when one set of electrodes is electrified and the other set is grounded, a discharge flows between two of said electrodes on one side of said shell and one of said electrodes on the other side of said shell.
Claim 9
Dependent Claim
34 words
The corona discharge device as defined by claim 1, wherein at least some of said electrodes are wire electrodes and said wire electrodes are arranged approximately parallel to the longitudinal axis of said axle.
Claim 10
Dependent Claim
17 words
The corona discharge device as defined by claim 8, wherein all of said electrodes are wire electrodes.
Claim 11
Dependent Claim
42 words
The corona discharge device as defined by claim 8, wherein said electrodes within said shell are off-set with respect to said electrodes outside said shell such that the corona discharage which results follows an oblique path through the wall of said shell.
Claim 12
Dependent Claim
82 words
The corona discharge device as defined by claim 8, wherein said electrodes inside and outside said shell are arranged such that said electrodes inside and outside said shell are offset from one another and further such that said electrodes are arranged such that when one set of electrodes is electrified and the other set is grounded, a discharge flows between two of said electrodes on one side of said shell and one of said electrodes on the other side of said shell.
Claim 13
Dependent Claim
19 words
The corona discharge device as defined by claim 1, wherein said cylindrical shell is comprised of reinforced synthetic resin.
Claim 14
Dependent Claim
18 words
The corona discharge device as defined by claim 1, wherein said shell is rotatably mounted around said axle.
Claim 15
Dependent Claim
22 words
The corona discharge device as defined by claim 1, wherein said roll is in contact with metal rolls for cooling said roll.
Claim 16
Dependent Claim
88 words
A corona discharge device for charging the surface of a material which comprises: a. a rotatable roll comprising a cylindrical shell made of a dielectric material; b. at least one metal roll in contact with said cylindrical shell for cooling said roll; c. at least one first electrode located outside said roll; and d. at least one second electrode located within said roll, one of said first or second electrodes being adapted for carrying electrical current and the other being adapted to be grounded as a counter electrode.
Claim 17
Dependent Claim
88 words
A corona discharge device for charging the surface of a material which comprises: a. a rotatable roll comprising a cylindrical shell made of a dielectric material; b. at least one metal roll in contact with said cylindrical shell for cooling said roll; c. at least one first electrode located outside said roll; and d. at least one second electrode located within said roll, one of said first or second electrodes being adapted for carrying electrical current and the other being adapted to be grounded as a counter electrode.
Claim 18
Dependent Claim
24 words
The corona discharge device of claim 15, wherein said electrodes outside and inside said shell are arranged along the cylindrical contour of the shell.
Claim 19
Dependent Claim
22 words
The corona discharge device of claim 16, wherein said electrodes within said shell are in contact with the inside of said shell.
Claim 20
Dependent Claim
25 words
The corona discharge device of claim 17, further comprising a spring means for pressing said electrode within said shell against the inside of said shell.
Claim 21
Dependent Claim
28 words
The corona discharge device of claim 15, wherein said rotatable roll further comprises an axle having discs mounted thereon, arranged in spaced relation to support said cylindrical shell.
Claim 22
Dependent Claim
12 words
The corona discharge device of claim 19, wherein said axle is hollow.
Claim 23
Dependent Claim
22 words
The corona discharge device of claim 20, wherein said axle is provided with inlet bores leading to the interior of said shell.
Claim 24
Dependent Claim
39 words
The corona discharge device of claim 15, wherein at least some of said electrodes are wire electrodes and said wire electrodes are wire electrodes and said wire electrodes are arranged approximately parallel to the longitudinal axis of said axle.
Claim 25
Dependent Claim
40 words
The corona discharge device of claim 22, wherein said electrodes within said shell are offset with respect to said electrodes outside said shell such that the corona discharge which results follows an oblique path through the wall of said shell.
Claim 26
Dependent Claim
80 words
The corona discharge device of claim 22, wherein said electrodes inside and outside said shell are arranged such that said electrodes inside and outside said shell are offset from one another and further such that said electrodes are arranged such that when one set of electrodes is electrified and the other set is grounded, a discharge flows between two of said electrodes on one side of said shell and one of said electrodes on the other side of said shell.
Claim 27
Dependent Claim
17 words
The corona discharge device of claim 15, wherein said cylindrical shell is comprised of reinforced synthetic resin.
References Cited (Backward Citations)
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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) | 1982-05-07 | 1982-11-06 | 1983-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-07 | 1986-11-06 | 1987-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-07 | 1990-11-06 | 1991-05-08 | $7700.00 | Window Closed / Lapsed |