Patent US1636421A successfully refreshed from Google Patents.
US3930614A
Expired / Lapsed
US
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Device for spraying a traveling paper web or the like
Assignee: JM Voith GmbH
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Filing: 1974-09-09
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Granted: 1976-01-06
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Expires: 1994-09-09
Abstract
Abstract Device for spraying a traveling paper web or the like with a liquid under the influence of an electrostatic high voltage includes spray nozzle means for spraying the liquid through a given space and onto the web, high voltage source means, electrode means connected to the high voltage source means and energizable thereby to ionize the space through which the liquid is sprayed, and means for grounding the web and the spray nozzle means.
Inventors
- 👤 Bernhard Krenkel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:40
CPC Classifications
D; D21; D21G; D21G7/00; B; B05; B05B; B05B5/00; B05B5/025; B05B5/053; B05B5/0533; B05B5/08; B05B5/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
102 words
Device for spraying a traveling paper web or the like with a liquid under the influence of an electrostatic high voltage comprising spray nozzle means for spraying the liquid through a given space and onto the web, high voltage source means, electrode means connected to said high voltage source means and energizable thereby to ionize the space through which the liquid is sprayed, and means for grounding the web and said spray nozzle means, said spray nozzle means and said electrodes each being disposed on both sides of a path through which the web travels and each being located opposite one another.
Claim 2
Dependent Claim
102 words
Device for spraying a traveling paper web or the like with a liquid under the influence of an electrostatic high voltage comprising spray nozzle means for spraying the liquid through a given space and onto the web, high voltage source means, electrode means connected to said high voltage source means and energizable thereby to ionize the space through which the liquid is sprayed, and means for grounding the web and said spray nozzle means, said spray nozzle means and said electrodes each being disposed on both sides of a path through which the web travels and each being located opposite one another.
Claim 3
Dependent Claim
80 words
Device according to claim 1 wherein said high voltage source means comprise a first high voltage source producing a positive high voltage potential and a second high voltage source producing a negative high voltage potential, said electrode means comprising electrodes on both sides of the travel path of the web, the electrodes on one side thereof being connected to said first high voltage source, and the electrodes on the other side thereof being connected to said second high voltage source.
Claim 4
Dependent Claim
24 words
Device according to claim 1 wherein said electrode means are in the form of a grid surrounding said spray nozzle means on all sides.
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) | 1979-01-05 | 1979-07-07 | 1980-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-05 | 1983-07-07 | 1984-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-05 | 1987-07-07 | 1988-01-06 | $7700.00 | Window Closed / Lapsed |