US3606972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray coating apparatus
Assignee: Ransburg Corp
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Filing: 1969-05-12
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Granted: 1971-09-21
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Expires: 1989-05-12
Abstract
Abstract AN ELECTROSTATIC, COMPRESSED-AIR SPRAY GUN WHEREIN THE LIQUID TO BE ATOMIZED IS FORMED ON A CONDUCTIVE SUPPORT INTO A FILM HAVING AN EXTENDED EDGE COINCIDENT WITH ONE EDGE OF A NARROW OPENING THROUGH WHICH A HIGH-VELOCITY STREAM OF ATOMIZING AIR IS DISCHARGED. THE OPPOSITE EDGE OF SUCH OPENING IS DEFINED BY AN ELECTRODE BETWEEN WHICH AND THE FILM-SUPPORT THERE IS MAINTAINED AN ELECTRICAL POTENTIAL DIFFERENCE. THE GUN MAY BE PROVIDED WITH AN INSULATED SPRAY-SURROUNDING ELECTRODE WHICH IS MAINTAINED AT AN EFFECTIVE SPRAY-REPELLING POTENTIAL BY THE TRANSMISSION OF ION-BORNE CHARGES TO OR FROM IT.
Inventors
- 👤 Wolfgang Ferrant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:32
CPC Classifications
B; B05; B05B; B05B5/00; B05B5/025; B05B5/03; B05B7/00; B05B7/02; B05B7/06; B05B7/062; B05B7/066; B05B7/067
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |