Patent US5674722A successfully refreshed from Google Patents.
US3139975A
Expired / Lapsed
US
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Device for cleaning endless conveyors
Assignee: Schaefer Brush Manufacturing Co Inc
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Filing: 1961-12-04
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Granted: 1964-07-07
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Expires: 1981-12-04
Abstract
No abstract record available.
Inventors
- 👤 Harold A Schaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:47
CPC Classifications
B; B65; B65G; B65G45/00; B65G45/10; B65G45/18; Y; Y10; Y10S; Y10S15/00; Y10S15/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
179 words
IN A CLEANING APPARATUS FOR AN ENDLESS CONVEYOR BELT, SAID CLEANING APPARATUS HAVING A FRAME POSITIONED TRANSVERSELY BENEATH THE CONVEYOR BELT, HAVING AN ENDLESS FLEXIBLE CLEANER BELT CARRIED BY SAID FRAME BENEATH THE LOWER RUN OF THE CONVEYOR BELT AND POSITIONED TO MOVE TRANSVERSELY ACROSS THE PATH OF THE CONVEYOR, HAVING MEANS FOR DRIVING SAID ENDLESS CLEANER BELT, HAVING A PLURALITY OF BRUSHES MOUNTED IN AND PROJECTING FROM SAID CLEANER BELT, AND HAVING MEANS TO HORIZONTALLY ADJUST SAID CLEANER BELT, THE IMPROVEMENTS COMPRISING: INDEPENDENTLY VERTICALLY-ADJUSTABLE CLEANER BELT-SUPPORTING MEANS ON EACH END OF SAID FRAME, THE INDEPENDENTLY ADJUSTABLE NATURE OF SAID SUPPORTING MEANS PERMITTING THE ADJUSTMENT OF THE PLANE OF SAID CLEANER BELT TO COMPENSATE FOR DEVIATIONS IN THE TRANSVERSE PLANE OF THE CONVEYOR BELT FROM THE HORIZONTAL; AND A PLURALITY OF SUPPORTING MEMBERS ON SAID FRAME INDEPENDENTLY VERTICALLY-ADJUSTABLY SUPPORTING THE UPPER RUN OF SAID CLEANER BELT INTERMEDIATE ITS LENGTH, THE INDEPENDENTLY ADJUSTABLE NATURE OF SAID SUPPORTING MEMBERS PERMITTING THE POSITIONING OF SAID CLEANER BELT UPPER RUN TO CONFORM TO THE CROSS SECTIONAL CONTOUR OF SAID CONVEYOR BELT LOWER RUN.
Claim 2
Dependent Claim
179 words
IN A CLEANING APPARATUS FOR AN ENDLESS CONVEYOR BELT, SAID CLEANING APPARATUS HAVING A FRAME POSITIONED TRANSVERSELY BENEATH THE CONVEYOR BELT, HAVING AN ENDLESS FLEXIBLE CLEANER BELT CARRIED BY SAID FRAME BENEATH THE LOWER RUN OF THE CONVEYOR BELT AND POSITIONED TO MOVE TRANSVERSELY ACROSS THE PATH OF THE CONVEYOR, HAVING MEANS FOR DRIVING SAID ENDLESS CLEANER BELT, HAVING A PLURALITY OF BRUSHES MOUNTED IN AND PROJECTING FROM SAID CLEANER BELT, AND HAVING MEANS TO HORIZONTALLY ADJUST SAID CLEANER BELT, THE IMPROVEMENTS COMPRISING: INDEPENDENTLY VERTICALLY-ADJUSTABLE CLEANER BELT-SUPPORTING MEANS ON EACH END OF SAID FRAME, THE INDEPENDENTLY ADJUSTABLE NATURE OF SAID SUPPORTING MEANS PERMITTING THE ADJUSTMENT OF THE PLANE OF SAID CLEANER BELT TO COMPENSATE FOR DEVIATIONS IN THE TRANSVERSE PLANE OF THE CONVEYOR BELT FROM THE HORIZONTAL; AND A PLURALITY OF SUPPORTING MEMBERS ON SAID FRAME INDEPENDENTLY VERTICALLY-ADJUSTABLY SUPPORTING THE UPPER RUN OF SAID CLEANER BELT INTERMEDIATE ITS LENGTH, THE INDEPENDENTLY ADJUSTABLE NATURE OF SAID SUPPORTING MEMBERS PERMITTING THE POSITIONING OF SAID CLEANER BELT UPPER RUN TO CONFORM TO THE CROSS SECTIONAL CONTOUR OF SAID CONVEYOR BELT LOWER RUN.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |