US3219013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precharging device for electrostatic painting apparatus
Assignee: Motors Liquidation Co
•
Filing: 1962-05-04
•
Granted: 1965-11-23
•
Expires: 1982-05-04
Abstract
No abstract record available.
Inventors
- 👤 William S Pettigrew
- 👤 Warren D Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:23
CPC Classifications
B; B05; B05B; B05B5/00; B05B5/025; B05B5/053; B05B5/0533; B05B5/04; B05B5/0403; B05B5/0407
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
ELECTROSTATIC PAINTING APPARATUS FOR PAINTING AN ARTICLE SPACED THEREFROM COMPRISING A CENTRIFUGAL ATOMIZING MEANS, A FEED LINE OF INSULATING MATERIAL FOR SUPPLYING PAINT THERETO, CHARGING MEANS CONNECTED TO THE FEED LINE FOR ELECTRICALLY CHARGING THE PAINT, SAID CHARGING MEANS COMPRISING A CONDUCTOR HAVING A SHARP EDGE DISPOSED WITHIN THE FEED LINE AND A SECOND CONDUCTOR SPACED FROM THE SHARP EDGE DISPOSED OUTSIDE SURROUNDING THE FEED LINE AND MEANS FOR ESTABLISHING A POTENTIAL DIFFERENCE BETWEEN THE SAID CONDUCTORS AND FOR ESTABLISHING AN INTENSE ELECTROSTATIC FIELD ADJACENT THE SHARP EDGE, FIELD ELECTRODES SURROUNDING THE ATOMIZING MEANS INSULATING MATERIAL COVERING THE FIELD ELECTRODES, AND MEANS FOR PROVIDING AN ELECTROSTATIC FIELD BETWEEN THE FIELD ELECTRODES AND THE ARTICLE.
Claim 2
Dependent Claim
114 words
ELECTROSTATIC PAINTING APPARATUS FOR PAINTING AN ARTICLE SPACED THEREFROM COMPRISING A CENTRIFUGAL ATOMIZING MEANS, A FEED LINE OF INSULATING MATERIAL FOR SUPPLYING PAINT THERETO, CHARGING MEANS CONNECTED TO THE FEED LINE FOR ELECTRICALLY CHARGING THE PAINT, SAID CHARGING MEANS COMPRISING A CONDUCTOR HAVING A SHARP EDGE DISPOSED WITHIN THE FEED LINE AND A SECOND CONDUCTOR SPACED FROM THE SHARP EDGE DISPOSED OUTSIDE SURROUNDING THE FEED LINE AND MEANS FOR ESTABLISHING A POTENTIAL DIFFERENCE BETWEEN THE SAID CONDUCTORS AND FOR ESTABLISHING AN INTENSE ELECTROSTATIC FIELD ADJACENT THE SHARP EDGE, FIELD ELECTRODES SURROUNDING THE ATOMIZING MEANS INSULATING MATERIAL COVERING THE FIELD ELECTRODES, AND MEANS FOR PROVIDING AN ELECTROSTATIC FIELD BETWEEN THE FIELD ELECTRODES AND THE ARTICLE.
References Cited (Backward Citations)
CA556965A
Cited
CA616933A
Cited
US2509277A
Cited
US3147145A
Cited
US2827394A
Cited
US2955565A
Cited
US2899136A
Cited
US3057558A
Cited
US3063642A
Cited
US3031145A
Cited
US3104185A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |