US2994618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for electrostatic coating
Assignee: Trion Inc
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Filing: 1957-01-22
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Granted: 1961-08-01
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Expires: 1977-01-22
Abstract
No abstract record available.
Inventors
- 👤 George F Landgraf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:59
CPC Classifications
B; B05; B05B; B05B5/00; B05B5/08; B05B5/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
138 words
A METHOD OF COATING AN ARTICLE COMPRISING MOVING THE ARTICLE THROUGH AN ELECTROSTATIC FIELD EXTENDING SUBSTANTIALLY AT RIGHT ANGLES TO THE PATH OF MOVEMENT OF THE ARTICLE, FORMING A MIST OF PARTICLES OF A COATING MATERIAL AND MAINTAINING THE MIST OUT OF CONTACT WITH THE ARTICLE, SUPPLYING A FLOW OF GAS SEPARATE FROM THE MIST FORMING MEANS TO MOVE THE MIST FROM THE POSITION WHERE IT IS FORMED TO A POSITION ADJACENT THE ARTICLE IN THE FIRST MENTIONED ELECTROSTATIC FIELD, ELECTROSTICALLY CHARGING ALL OF THE MIST PARTICLES IN AN ELECTROSTATIC FIELD REMOVED FROM THE PATH OF MOVEMENT OF THE ARTICLE, AS THEY MOVE TOWARDS THE ARTICLE, AND CONTROLLING THE RATE AT WHICH THE MIST MOVES TO THE ARTICLE BY REGULATING ONLY THE RATE OF FLOW OF SAID GAS IN ACCORDANCE WITH THE SPEED OF MOVEMENT OF THE ARTICLE.
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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) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |