US4951599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing for a rotatable member
Assignee: Xerox Corp
•
Filing: 1988-12-05
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Granted: 1990-08-28
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Expires: 2008-12-05
Abstract
Abstract Bearing (20) for a rotatable metallic member (8) to which an electrical potential is to be applied during rotation thereof, including a cylindrical sleeve (21) having an internal bearing surface for a cylindrical shaft (17) of said metallic member. The cylindrical sleeve (21) is of a conductive plastic material. The bearing is especially useful in a developer assembly for an electrostatographic apparatus including a metallic developer roll. The developer roll (8) has at least one metallic shaft which is supported for rotation in one of the bearings.
Inventors
- 👤 Dhirendra Damji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:18
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C33/201; G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/09; G03G15/0921; G03G15/0935; Y; Y10; Y10S; Y10S384/00; Y10S384/90; Y10S384/909
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
51 words
Developer apparatus for an electrostatographic apparatus, said apparatus comprising: a metallic developer roll forming a part of a magnetic brush system; and a bearing member for rotatably supporting said metallic developer roll, said bearing member including a cylindrical sleeve having an internal bearing surface and being fabricated from conductive plastic material.
Claim 2
Dependent Claim
51 words
Developer apparatus for an electrostatographic apparatus, said apparatus comprising: a metallic developer roll forming a part of a magnetic brush system; and a bearing member for rotatably supporting said metallic developer roll, said bearing member including a cylindrical sleeve having an internal bearing surface and being fabricated from conductive plastic material.
Claim 3
Dependent Claim
44 words
Developer apparatus according to claim 1 including a metallic trim bar adjacent the developer roll for trimming a magnetic brush formed on the developer roll and wherein sad bearing has an extended portion thereof engaging said trim bar for establishing an electrical connection therewith.
References Cited (Backward Citations)
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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) | 1993-08-27 | 1994-02-26 | 1994-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-27 | 1998-02-26 | 1998-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-27 | 2002-02-26 | 2002-08-28 | $7700.00 | Window Closed / Lapsed |