US4403168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-voltage electrode consisting of a plurality of series-connected single electrodes for a spark-discharge device
Assignee: VAN LEEUWEN IRELAND Inc
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Filing: 1981-08-21
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Granted: 1983-09-06
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Expires: 2001-08-21
Abstract
Abstract A high voltage electrode for a spark discharge device used in cooperation with an opposing roller electrode to roughen plastic sheets. The electrode is formed of a multiplicity of plates, or platelets, aligned edge to edge to form together a knife edge. Individual platelets are removable from an active position, within a holder, to an active position, on a selectable basis. Thereby, the portion of the plastic sheet to be roughened can readily be controlled.
Inventors
- 👤 Peter van Leeuwen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:46
CPC Classifications
H; H01; H01T; H01T19/00; Y; Y10; Y10S; Y10S422/00; Y10S422/907
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
99 words
A high voltage electrode consisting of a plurality of series-connected single electrodes for a spark-discharge device for roughening sheet-like plastic layers, having the form of a knife electrode which faces a counterelectrode consisting of a roller or a plane, characterized in that said single electrodes are designed as a multiplicity of separate individual platelets and are combined into a row, with the platelets arranged edgewise in such a manner as to fall essentially into one plane, a holder for holding said platelets in said row normally in a retracted, inoperative position, but with selected platelets in extended operative position.
Claim 2
Dependent Claim
99 words
A high voltage electrode consisting of a plurality of series-connected single electrodes for a spark-discharge device for roughening sheet-like plastic layers, having the form of a knife electrode which faces a counterelectrode consisting of a roller or a plane, characterized in that said single electrodes are designed as a multiplicity of separate individual platelets and are combined into a row, with the platelets arranged edgewise in such a manner as to fall essentially into one plane, a holder for holding said platelets in said row normally in a retracted, inoperative position, but with selected platelets in extended operative position.
Claim 3
Dependent Claim
140 words
A high-voltage electrode consisting of a plurality of series-connected single electrodes for a spark-discharge device for roughening sheet-like plastic layers, having the form of a knife electrode which faces a counterelectrode consisting of a roller or a plane, characterized in that a multiplicity of said single electrodes are designed as separate individual platelets and are combined into a row in such a manner that said platelets (3, 4, 5, 6, 7) fall essentially into one plane, a holder for holding said platelets in said row, each platelet being retained in a slot (2) of said holder (1), at least one spring-loaded ball catch (12, 13, 14) for each platelet, with the ball (14) engaging in one or more countersunk holes (15, 16) of the particular platelet concerned which lie on said platelet on a line perpendicular to said holder (1).
Claim 4
Dependent Claim
140 words
A high-voltage electrode consisting of a plurality of series-connected single electrodes for a spark-discharge device for roughening sheet-like plastic layers, having the form of a knife electrode which faces a counterelectrode consisting of a roller or a plane, characterized in that a multiplicity of said single electrodes are designed as separate individual platelets and are combined into a row in such a manner that said platelets (3, 4, 5, 6, 7) fall essentially into one plane, a holder for holding said platelets in said row, each platelet being retained in a slot (2) of said holder (1), at least one spring-loaded ball catch (12, 13, 14) for each platelet, with the ball (14) engaging in one or more countersunk holes (15, 16) of the particular platelet concerned which lie on said platelet on a line perpendicular to said holder (1).
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) | 1986-09-05 | 1987-03-07 | 1987-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-05 | 1991-03-07 | 1991-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-05 | 1995-03-07 | 1995-09-06 | $7700.00 | Window Closed / Lapsed |