US3109657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal spreader
Assignee: Amazonen Werke H Dreyer SE and Co KG
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Filing: 1962-02-16
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Granted: 1963-11-05
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Expires: 1982-02-16
Abstract
No abstract record available.
Inventors
- 👤 Dreyer Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:42
CPC Classifications
A; A01; A01C; A01C17/00; A01C17/001
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
CENTRIFUGAL SPREADER FOR PARTICLE FERTILIZER MATERIAL WHICH COMPRISES AN INVERTED FRUSTO-CONICAL STORAGE BIN HAVING A SIDE WALL AND A BOTTOM WALL, SAID SIDE WALL HAVING A FLAT PORTION DEFINED BY A PLANE INTERSECTING THE SIDE WALL AND EXTENDING DOWNWARDLY TO THE BOTTOM WALL AT AN ANGLE WITH THE VERTICAL AXIS OF THE BIN SLIGHTLY LARGER THAN THE NORMAL ANGLE OF THE SIDE WALL WITH SAID VERTICAL AXIS, AN OPENING DEFINED IN SAID FLAT PORTION AT A LEVEL SPACED FROM THE BOTTOM WALL, A ROTATABLE SHAFT HAVING AN END EXTENDING UPWARDLY THROUGH THE BOTTOM WALL INTO THE BIN AND DISPOSED ALONG THE VERTICAL AXIS OF THE BIN, AN EJECTOR BAR SECURED TO THE END OF THE SHAFT FOR ROTATION THEREWITH AND EXTENDING RADIALLY OUTWARDLY THEREFROM AT SAID LEVEL SPACED FROM THE BOTTOM WALL, SAID BAR HAVING
Claim 2
Dependent Claim
135 words
CENTRIFUGAL SPREADER FOR PARTICLE FERTILIZER MATERIAL WHICH COMPRISES AN INVERTED FRUSTO-CONICAL STORAGE BIN HAVING A SIDE WALL AND A BOTTOM WALL, SAID SIDE WALL HAVING A FLAT PORTION DEFINED BY A PLANE INTERSECTING THE SIDE WALL AND EXTENDING DOWNWARDLY TO THE BOTTOM WALL AT AN ANGLE WITH THE VERTICAL AXIS OF THE BIN SLIGHTLY LARGER THAN THE NORMAL ANGLE OF THE SIDE WALL WITH SAID VERTICAL AXIS, AN OPENING DEFINED IN SAID FLAT PORTION AT A LEVEL SPACED FROM THE BOTTOM WALL, A ROTATABLE SHAFT HAVING AN END EXTENDING UPWARDLY THROUGH THE BOTTOM WALL INTO THE BIN AND DISPOSED ALONG THE VERTICAL AXIS OF THE BIN, AN EJECTOR BAR SECURED TO THE END OF THE SHAFT FOR ROTATION THEREWITH AND EXTENDING RADIALLY OUTWARDLY THEREFROM AT SAID LEVEL SPACED FROM THE BOTTOM WALL, SAID BAR HAVING
References Cited (Backward Citations)
US2766872A
Cited
US3038643A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |