Patent US3177830A successfully refreshed from Google Patents.
US3177830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seed drill
Assignee: Individual
•
Filing: 1962-01-29
•
Granted: 1965-04-13
•
Expires: 1982-01-29
Abstract
No abstract record available.
Inventors
- 👤 Zimmerman Clarence Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:29
CPC Classifications
A; A01; A01C; A01C5/00; A01C5/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A SHOVEL COMPRISING: AN OPENING SHOR HAVING A V-SHAPED HORIZONTAL FORWARD CUTTING EDGE ADAPTED TO SLICE THROUGH SOIL, THE SHOE TOP SURFACE BEING CURVE UPWARDLY AND REARWARDLY FROM SAID EDGE TO THEREBY TURN OVER SOIL SLICED BY SAID EDGE; A SLOTTING BLADE MOUNTED ON SAID SHOE HAVING A FRONT EDGE EXTENDED FORWARDLY AND DOWNWARDLY FROM THE TIP OF SAID CUTTING EDGE AND TERMINATING IN A POINT BELOW AND FORWARD OF SAID CUTTING EDGE TO THEREBY PENETRATE PACKED SOIL, THE BLADE BEING EXTENDED REARWARDLY BENEATH THE SHOE TO THEREBY OPEN A SEED RECEIVING TRENCH; AND MEANS MOUNTED ON SAID SHOE ADAPTED TO DIRECT SEEDS INTO THE TRENCH FORMED BY PASSAGE OF SAID BLADE.
Claim 2
Dependent Claim
144 words
A SEED DRILL COMPRISING: A FRAME ADAPTED TO BE DRAWN OVER A FIELD TO BE SOWN; A SHOVEL HAVING A SUPPORTING SHANK SUSPENDED FROM THE FRAME, SAID SHOVEL BEING IN PARALLEL ALIGNMENT WITH THE DIRECTION OF TRAVEL OF THE FRAME AND POSITIONED TO CUT A FURROW THROUGH THE SOIL SURFACE; SEED SUPPLY MEANS MOUNTED ON SAID FRAME OPERATIVELY CONNECTED TO SAID SHOVEL AND EXTENDING DOWNWARDLY BEHIND THE SHOVEL ADAPTED TO DIRECT SEED TO THE BOTTOM OF THE FURROW CUT BY SAID SHOVEL; AND PRESSURE WHEEL MEANS MOUNTED TO THE FRAME BEHIND THE SHOVEL COMPRISING A PAIR OF PARALLEL PRESS WHEELS ON A COMMON AXIS HAVING SURFACE PORTIONS JUXTAPOSED TO THE SHOVEL SHANK ADAPTED TO WIPE ACCUMULATED TRASH DOWNWARD FROM THE SHANK, SAID PRESSURE WHEEL MEANS HAVING OUTER GROUND ENGAGING SURFACES INCLINED TOWARD THE AXIS OF THE WHEEL MEANS AS THEY RECEDE FROM THE SHANK.
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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) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |