US3283703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic printing brush powder feed system
Assignee: CROCKER CITIZENS NAT BANK
•
Filing: 1964-08-03
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Granted: 1966-11-08
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Expires: 1984-08-03
Abstract
No abstract record available.
Inventors
- 👤 Clyde O Childress
- 👤 Harold W Bonner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:26
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/0822; B; B41; B41M; B41M1/00; B41M1/12; B41M1/125; G03G15/0806; G03G17/00; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
IN AN ELECTROSTATIC PRINTING SYSTEM OF THE TYPE WHEREIN ELECTROSCOPIC POWDER IS APPLIED FROM A RESERVOIR TO A BRUSH WHICH IS ROTATABLY MOVED OVER THE SURFACE OF AN IMAGE FORMING SCREEN ELECTRODE TO TRANSFER POWDER PARTICLES THERETHROUGH INTO AN ELECTRIC FIELD, THE IMPROVEMENT COMPRISING A FIRST ROLLER HAVING ITS SURFACE MADE OF A PLASTIC MATERIAL AND HAVING TRIBOELECTRIC PROPERTIES, MEANS FOR SUPPORTING SAID FIRST ROLLER ROTATABLY WITH ONE PORTION OF ITS PERIPHERY IN FRICTIONAL ENGAGEMENT WITH THE PERIPHERY OF SAID BRUSH TO BE ROTATABLE THEREWITH, MEANS FOR APPLYING POWDER FROM SAID RESERVOIR TO ANOTHER PORTION OF SAID FIRST ROLLER PERIPHERY, AND MEANS FOR REDISTRIBUTING EXCESS POWDER OVER THE SURFACE OF SAID BRUSH COMPRISING A SECOND ROLLER HAVING ITS SURFACE MADE OF PLASTIC MATERIAL AND HAVING TRIBOELECTRIC PROPERTIES, AND MEANS FOR SUPPORTING SAID SECOND ROLLER ROTATABLY WITH ITS PERIPHERY IN FRICTIONAL ENGAGEMENT WITH ANOTHER PORTION OF THE PERIPHERY OF SAID BRUSH.
Claim 2
Dependent Claim
150 words
IN AN ELECTROSTATIC PRINTING SYSTEM OF THE TYPE WHEREIN ELECTROSCOPIC POWDER IS APPLIED FROM A RESERVOIR TO A BRUSH WHICH IS ROTATABLY MOVED OVER THE SURFACE OF AN IMAGE FORMING SCREEN ELECTRODE TO TRANSFER POWDER PARTICLES THERETHROUGH INTO AN ELECTRIC FIELD, THE IMPROVEMENT COMPRISING A FIRST ROLLER HAVING ITS SURFACE MADE OF A PLASTIC MATERIAL AND HAVING TRIBOELECTRIC PROPERTIES, MEANS FOR SUPPORTING SAID FIRST ROLLER ROTATABLY WITH ONE PORTION OF ITS PERIPHERY IN FRICTIONAL ENGAGEMENT WITH THE PERIPHERY OF SAID BRUSH TO BE ROTATABLE THEREWITH, MEANS FOR APPLYING POWDER FROM SAID RESERVOIR TO ANOTHER PORTION OF SAID FIRST ROLLER PERIPHERY, AND MEANS FOR REDISTRIBUTING EXCESS POWDER OVER THE SURFACE OF SAID BRUSH COMPRISING A SECOND ROLLER HAVING ITS SURFACE MADE OF PLASTIC MATERIAL AND HAVING TRIBOELECTRIC PROPERTIES, AND MEANS FOR SUPPORTING SAID SECOND ROLLER ROTATABLY WITH ITS PERIPHERY IN FRICTIONAL ENGAGEMENT WITH ANOTHER PORTION OF THE PERIPHERY OF SAID BRUSH.
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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) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |