US3142275A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Planter mechanism
Assignee: Allis Chalmers Corp
•
Filing: 1961-10-25
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Granted: 1964-07-28
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Expires: 1981-10-25
Abstract
No abstract record available.
Inventors
- 👤 August G Buhr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:42
CPC Classifications
A; A01; A01C; A01C7/00; A01C7/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A HILL-DROP MECHANISM FOR PLANTERS COMPRISING, A VERTICAL EJECTOR WHEEL; SUPPORTING MEANS FOR SAID EJECTOR WHEEL INCLUDING A BOOT CASING SURROUNDING SAID WHEEL AND PRESENTING AN UPPER SEED INLET OPENING, A LOWER SEED OUTLET OPENING, AND AN INTERNAL WALL PORTION EXTENDING DOWNWARDLY FROM SAID INLET OPENING IN CONFRONTING RELATION TO THE PERIPHERY OF SAID EJECTOR WHEEL AND TERMINATING AT ITS LOWER END ON A LEVEL BELOW THE AXIS OF SAID EJECTOR WHEEL AND ABOVE THE PERIPHERAL BOTTOM OF THE LATTER; SAID EJECTOR WHEEL BEING RADIALLY RECESSED TO PRESENT AT LEAST ONE PERIPHERAL CAMLIKE SEED CELL SURFACE TAPERING FROM A RADIALLY OUTERMOST POINT TO AN INNER POINT DEFINED BY A RADIAL ABUTMENT, AND THE MAXIMUM DIAMETER OF SAID EJECTOR WHEEL BEING SUBSTANTIALLY EQUAL TO THE RADIAL SPACING OF ITS CENTER FROM SAID INTERNAL WALL PORTION OF SAID BOOT CASING; A GENERALLY J-SHAPED VALVE PLATE OF A WIDTH SUBSTANTIALLY EQUAL TO THE WIDTH OF SAID SEED CELL SURFACE PIVOTED AT ITS STRAIGHT END PORTION ON A HORIZONTAL AXIS TO SAID
Claim 2
Dependent Claim
168 words
A HILL-DROP MECHANISM FOR PLANTERS COMPRISING, A VERTICAL EJECTOR WHEEL; SUPPORTING MEANS FOR SAID EJECTOR WHEEL INCLUDING A BOOT CASING SURROUNDING SAID WHEEL AND PRESENTING AN UPPER SEED INLET OPENING, A LOWER SEED OUTLET OPENING, AND AN INTERNAL WALL PORTION EXTENDING DOWNWARDLY FROM SAID INLET OPENING IN CONFRONTING RELATION TO THE PERIPHERY OF SAID EJECTOR WHEEL AND TERMINATING AT ITS LOWER END ON A LEVEL BELOW THE AXIS OF SAID EJECTOR WHEEL AND ABOVE THE PERIPHERAL BOTTOM OF THE LATTER; SAID EJECTOR WHEEL BEING RADIALLY RECESSED TO PRESENT AT LEAST ONE PERIPHERAL CAMLIKE SEED CELL SURFACE TAPERING FROM A RADIALLY OUTERMOST POINT TO AN INNER POINT DEFINED BY A RADIAL ABUTMENT, AND THE MAXIMUM DIAMETER OF SAID EJECTOR WHEEL BEING SUBSTANTIALLY EQUAL TO THE RADIAL SPACING OF ITS CENTER FROM SAID INTERNAL WALL PORTION OF SAID BOOT CASING; A GENERALLY J-SHAPED VALVE PLATE OF A WIDTH SUBSTANTIALLY EQUAL TO THE WIDTH OF SAID SEED CELL SURFACE PIVOTED AT ITS STRAIGHT END PORTION ON A HORIZONTAL AXIS TO SAID
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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) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |