US3144910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shares for raising root crops
Assignee: National Research Development Corp UK
•
Filing: 1962-04-30
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Granted: 1964-08-18
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Expires: 1982-04-30
Abstract
No abstract record available.
Inventors
- 👤 Hawkins John Clement
- 👤 Ofield Robert John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:16
CPC Classifications
A; A01; A01D; A01D25/00; A01D25/02; A01D17/00; A01D17/10; A01D25/04; A01D25/042; A01D25/044
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A MACHINE FOR USE IN THE HARVESTING OF ROOT CROPS COMPRISING A FRAME, A GROUND-ENGAGING SHARE CARRIED BY THE FRAME, SAID SHARE HAVING OPPOSITE SIDE WALLS EACH OF WHICH COMPRISES A DISC-LIKE ROTOR, EACH OF SAID DISC-LIKE ROTOR HAVING AN UPWARDLY EXTENDING SHAFT AXIS FIXED THERETO, THE INNER PERIPHERIES OF SAID ROTORS BEING ADJACENT TO BUT SPACED FROM EACH OTHER, THE GENERAL PLANES OF REVOLUTION OF SAID ROTORS LYING AT AN ANGLE TO ONE ANOTHER OF BETWEEN 45* AND 180*, THE AXES OF ROTATION OF SAID ROTORS EXTENDING UPWARDLY AT AN ACUTE ANGLE TO THE VERTICAL AND INTERSECTING ABOVE SAID ROTORS, AND DRIVE MEANS CONNECTED TO SAID ROTORS TO ROTATE SAID ROTORS IN DIRECTIONS TO PRODUCE REARWARD MOVEMENT OF THE INNER PERIPHERIES OF SAID ROTORS.
Claim 2
Dependent Claim
125 words
A MACHINE FOR USE IN THE HARVESTING OF ROOT CROPS COMPRISING A FRAME, A GROUND-ENGAGING SHARE CARRIED BY THE FRAME, SAID SHARE HAVING OPPOSITE SIDE WALLS EACH OF WHICH COMPRISES A DISC-LIKE ROTOR, EACH OF SAID DISC-LIKE ROTOR HAVING AN UPWARDLY EXTENDING SHAFT AXIS FIXED THERETO, THE INNER PERIPHERIES OF SAID ROTORS BEING ADJACENT TO BUT SPACED FROM EACH OTHER, THE GENERAL PLANES OF REVOLUTION OF SAID ROTORS LYING AT AN ANGLE TO ONE ANOTHER OF BETWEEN 45* AND 180*, THE AXES OF ROTATION OF SAID ROTORS EXTENDING UPWARDLY AT AN ACUTE ANGLE TO THE VERTICAL AND INTERSECTING ABOVE SAID ROTORS, AND DRIVE MEANS CONNECTED TO SAID ROTORS TO ROTATE SAID ROTORS IN DIRECTIONS TO PRODUCE REARWARD MOVEMENT OF THE INNER PERIPHERIES OF SAID ROTORS.
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) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |