Patent US3098765A successfully refreshed from Google Patents.
US3098765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Xerographic brush
Assignee: Robertson Photo-Mechanix Inc
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Filing: 1959-03-16
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Granted: 1963-07-23
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Expires: 1979-03-16
Abstract
No abstract record available.
Inventors
- 👤 Keller Daniel Franklin
- 👤 Jr William R Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:29
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/09; G03G15/0921
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A XEROGRAPHIC BRUSH COMPRISING A ROTATABLE NONMAGNETIC SHAFT, A PLURALITY OF MAGNETS AND NON-MAGNETIC MEMBERS ALTERNATELY SPACED IN A LONGITUDIUNAL ROW ON SAID SHAFT TO FORM A CYLINDRICAL CORE ROTATABLE WITH SAID SHAFT, AND A CYLINDRICAL SLEEVE OF NON-MAGNETIC MATERIAL ON THE OUTER PERIPHERY OF SAID CYLINDRICAL CORE AND CO-ROTATABLE THEREWITH, SAID SLEEVE HAVING AN OUTER PERIPHERAL SURFACE ADAPTED TO SUPPORT BRUSH-LIKE TUFTS OF XEROGRAPHIC DEVELOPER MIXTURE THEREON, SAID CORE AND SAID SLEEVE BEING RELATIVELY AXIALLY RECIPROCABLE AND DRIVE MEANS ROTATABLY DRIVING SAID SHAFT AND COMPRISING A ROTATABLY DRIVEN WOBBLE PLATE, AND SPRING BIASING MEANS LOADING SAID SHAFT AGAINST SAID WOBBLE PLATE, THEREBY TO EFFECT SAID RECIPROCATION CONCURRENTLY WITH THE ROTATION OF SAID SHAFT.
Claim 2
Dependent Claim
114 words
A XEROGRAPHIC BRUSH COMPRISING A ROTATABLE NONMAGNETIC SHAFT, A PLURALITY OF MAGNETS AND NON-MAGNETIC MEMBERS ALTERNATELY SPACED IN A LONGITUDIUNAL ROW ON SAID SHAFT TO FORM A CYLINDRICAL CORE ROTATABLE WITH SAID SHAFT, AND A CYLINDRICAL SLEEVE OF NON-MAGNETIC MATERIAL ON THE OUTER PERIPHERY OF SAID CYLINDRICAL CORE AND CO-ROTATABLE THEREWITH, SAID SLEEVE HAVING AN OUTER PERIPHERAL SURFACE ADAPTED TO SUPPORT BRUSH-LIKE TUFTS OF XEROGRAPHIC DEVELOPER MIXTURE THEREON, SAID CORE AND SAID SLEEVE BEING RELATIVELY AXIALLY RECIPROCABLE AND DRIVE MEANS ROTATABLY DRIVING SAID SHAFT AND COMPRISING A ROTATABLY DRIVEN WOBBLE PLATE, AND SPRING BIASING MEANS LOADING SAID SHAFT AGAINST SAID WOBBLE PLATE, THEREBY TO EFFECT SAID RECIPROCATION CONCURRENTLY WITH THE ROTATION OF SAID SHAFT.
References Cited (Backward Citations)
US456507A
Cited
US500604A
Cited
US1643117A
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US994871A
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US1068453A
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US2786440A
Cited
US2854947A
Cited
US2786441A
Cited
US2959153A
Cited
US2832311A
Cited
US2822779A
Cited
US3003462A
Cited
US2975758A
Cited
US3015305A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-22 | 1967-01-21 | 1967-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-22 | 1971-01-21 | 1971-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-22 | 1975-01-21 | 1975-07-23 | $7700.00 | Window Closed / Lapsed |