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US4568174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoreceptor descumming device
Assignee: Xerox Corp
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Filing: 1984-02-27
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Granted: 1986-02-04
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Expires: 2004-02-27
Abstract
Abstract An apparatus for cleaning contaminants from a photoreceptor surface including a pivot for moving a flexible web into engagement with the photoreceptor surface. A supply station stores an unused portion of the web and a receiving station accepts the used portions of the web having contaminants thereon removed from the photoreceptor surface. The web is advanced from the supply station to the receiving station in order that successive portions of the web engage the photoreceptor surface. The pivot moves the cleaning web into engagement with the photoreceptor surface upon operator activation and automatically after a given time period out of engagement after a given cleaning cycle.
Inventors
- 👤 Klaus K. Stange
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:27
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/0005; G03G21/0041
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
Apparatus for cleaning contaminants from a photoreceptor surface including a flexible web engagable with the photoreceptor surface during the operation of the photoreceptor surface, a supply station including a first spool storing an unused portion of the web, a receiving station including a second spool for accepting a used portion of the web having thereon contaminants removed from the photoreceptor surface, means for advancing the web from the supply station to the receiving station in order that successive portions of the web engage the photoreceptor surface, pivot means, the web supported by the pivot means for moving the web into and out of engagement with the photoreceptor surface, control means including a switch to selectively activate the pivot means during the operation of the photoreceptor surface, and a timer responsive to the switch to selectively retract the flexible web from engagement with the photoreceptor surface a given period of time after activation of said switch.
Claim 2
Dependent Claim
155 words
Apparatus for cleaning contaminants from a photoreceptor surface including a flexible web engagable with the photoreceptor surface during the operation of the photoreceptor surface, a supply station including a first spool storing an unused portion of the web, a receiving station including a second spool for accepting a used portion of the web having thereon contaminants removed from the photoreceptor surface, means for advancing the web from the supply station to the receiving station in order that successive portions of the web engage the photoreceptor surface, pivot means, the web supported by the pivot means for moving the web into and out of engagement with the photoreceptor surface, control means including a switch to selectively activate the pivot means during the operation of the photoreceptor surface, and a timer responsive to the switch to selectively retract the flexible web from engagement with the photoreceptor surface a given period of time after activation of said switch.
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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) | 1989-02-03 | 1989-08-05 | 1990-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-03 | 1993-08-05 | 1994-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-03 | 1997-08-05 | 1998-02-04 | $7700.00 | Window Closed / Lapsed |