Patent US3843407A successfully refreshed from Google Patents.
US3843407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blade cleaning with reverse movement
Assignee: Xerox Corp
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Filing: 1973-08-24
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Granted: 1974-10-22
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Expires: 1993-08-24
Abstract
Abstract 1. IN AN APPARATUS FOR IMPROVED BLADE CLEANING OF AN IMAGING SURFACE IN ELECTROSTATOGRAPHIC APPARATUS CONTAINING DRIVE MEANS FOR NORMALLY DRIVING AN IMAGING SURFACE IN A FIRST DIRECTION OF MOTION AND MEANS FOR STOPPING SAID DRIVE MEANS FOR STOPPING SAID IMAGING SURFACE, WHEREIN SAID IMAGING SURFACE IS CLEANED BY A CLEANING BLADE CONTACTING SAID IMAGING SURFACE IS CLEANED BY A TENDING INTO SAID FIRST DIRECTION OF MOTION OF SAID SURFACE; THE IMPROVEMENT COMPRISING REVERSING MEANS FOR INTERMITTENTLY REVERSING SAID DIRECTION OF MOTION OF SAID IMAGING SURFACE WHILE SAID CLEANING BLADE IS MAINTAINED IN SAID SAME CONTACT WITH SAID IMAGING SURFACE.
Inventors
- 👤 B Thorp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:18
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/0005; G03G21/0011
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
IN AN APPARATUS FOR IMPROVED BLADE CLEANING OF AN IMAGING SURFACE IN ELECTROSTATOGRAPHIC APPARATUS CONTAINING DRIVE MEANS FOR NORMALLY DRIVING AN IMAGING SURFACE IN A FIRST DIRECTION OF MOTION AND MEANS FOR STOPPING SAID DRIVE MEANS FOR STOPPING SAID IMAGING SURFACE, WHEREIN SAID IMAGING SURFACE IS CLEANED BY A CLEANING BLADE CONTACTING SAID IMAGING SURFACE IS CLEANED BY A TENDING INTO SAID FIRST DIRECTION OF MOTION OF SAID SURFACE; THE IMPROVEMENT COMPRISING REVERSING MEANS FOR INTERMITTENTLY REVERSING SAID DIRECTION OF MOTION OF SAID IMAGING SURFACE WHILE SAID CLEANING BLADE IS MAINTAINED IN SAID SAME CONTACT WITH SAID IMAGING SURFACE.
Claim 2
Dependent Claim
99 words
IN AN APPARATUS FOR IMPROVED BLADE CLEANING OF AN IMAGING SURFACE IN ELECTROSTATOGRAPHIC APPARATUS CONTAINING DRIVE MEANS FOR NORMALLY DRIVING AN IMAGING SURFACE IN A FIRST DIRECTION OF MOTION AND MEANS FOR STOPPING SAID DRIVE MEANS FOR STOPPING SAID IMAGING SURFACE, WHEREIN SAID IMAGING SURFACE IS CLEANED BY A CLEANING BLADE CONTACTING SAID IMAGING SURFACE IS CLEANED BY A TENDING INTO SAID FIRST DIRECTION OF MOTION OF SAID SURFACE; THE IMPROVEMENT COMPRISING REVERSING MEANS FOR INTERMITTENTLY REVERSING SAID DIRECTION OF MOTION OF SAID IMAGING SURFACE WHILE SAID CLEANING BLADE IS MAINTAINED IN SAID SAME CONTACT WITH SAID IMAGING SURFACE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |