US3129771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cultivating tool
Assignee: Individual
•
Filing: 1961-08-02
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Granted: 1964-04-21
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Expires: 1981-08-02
Abstract
No abstract record available.
Inventors
- 👤 Clifford G Lidstone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:48
CPC Classifications
A; A01; A01B; A01B33/00; A01B33/06; A01B1/00; A01B1/06; A01B1/065; A01B1/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
256 words
A CULTIVATING TOOL COMPRISING A SHANK HAVING AT ONE END THEREOF A FREE CHUCK-RECEIVING PORTION AND AT THE OTHER END THEREOF A FREE SOIL-ENGAGEABLE PORTION, A PAIR OF ARMS FIXED TO SAID SHANK IN SPACED ADJACENT RELATION TO SAID SOILENGAGEABLE PORTION AND EXTENDING RADIALLY FROM SAID SHANK, A TINE FIXED TO AND DEPENDING FROM THE OUTER END OF EACH SAID ARM, EACH SAID TINE HAVING PARALLEL INNER AND OUTER EDGES THROUGHOUT THE LENGTH OF EACH TINE, EACH OF SAID EDGES LYING IN A SEPARATE PLANE PARALLEL TO A PLANE PERPENDICULAR TO SAID ARMS AND PASSING THROUGH THE AXIS OF SAID SHANK, EACH SAID TINE HAVING A FREE SOIL-ENGAGEABLE END DISPOSED IN A COMMON PLANE NORMAL TO AND INTERSECTING THE AXIS OF SAID SHANK AT A POINT SPACED FROM SAID SOIL-ENGAGEABLE PORTION OF SAID SHANK, EACH SAID TINE HAVING A STRAIGHT LEADING EDGE BETWEEN SAID INNER EDGE AND SAID OUTER EDGE EXTENDING THROUGHOUT THE ENTIRE LENGTH THEREOF, EACH SAID LEADING EDGE BEING INCLINED AT AN ACUTE ANGLE TO A PLANE PASSING THROUGH SAID PAIR OF ARMS AND THE AXIS OF SAID SHANK, SAID LAST MENTIONED PLANE BEING NORMAL TO THE PLANE THAT IS PERPENDICULAR TO SAID ARMS AND PASSES THROUGH THE AXIS OF SAID SHANK, SAID TINES BEING IN UNIFORMLY RADIALLY SPACED RELATION TO SAID SHANK, SAID SHANK HAVING A FRUSTO-CONICAL PORTION EXTENDING SOLELY FROM SAID COMMON PLANE OF SAID SOIL-ENGAGEABLE ENDS OF SAID TINES TO THE JUNCTURE OF SAID ARMS WITH SAID SHANK, SAID FRUSTO-CONICAL PORTION BEING OF GRADUALLY INCREASING DIAMETER FROM SAID LAST MENTIONED PLANE.
Claim 2
Dependent Claim
256 words
A CULTIVATING TOOL COMPRISING A SHANK HAVING AT ONE END THEREOF A FREE CHUCK-RECEIVING PORTION AND AT THE OTHER END THEREOF A FREE SOIL-ENGAGEABLE PORTION, A PAIR OF ARMS FIXED TO SAID SHANK IN SPACED ADJACENT RELATION TO SAID SOILENGAGEABLE PORTION AND EXTENDING RADIALLY FROM SAID SHANK, A TINE FIXED TO AND DEPENDING FROM THE OUTER END OF EACH SAID ARM, EACH SAID TINE HAVING PARALLEL INNER AND OUTER EDGES THROUGHOUT THE LENGTH OF EACH TINE, EACH OF SAID EDGES LYING IN A SEPARATE PLANE PARALLEL TO A PLANE PERPENDICULAR TO SAID ARMS AND PASSING THROUGH THE AXIS OF SAID SHANK, EACH SAID TINE HAVING A FREE SOIL-ENGAGEABLE END DISPOSED IN A COMMON PLANE NORMAL TO AND INTERSECTING THE AXIS OF SAID SHANK AT A POINT SPACED FROM SAID SOIL-ENGAGEABLE PORTION OF SAID SHANK, EACH SAID TINE HAVING A STRAIGHT LEADING EDGE BETWEEN SAID INNER EDGE AND SAID OUTER EDGE EXTENDING THROUGHOUT THE ENTIRE LENGTH THEREOF, EACH SAID LEADING EDGE BEING INCLINED AT AN ACUTE ANGLE TO A PLANE PASSING THROUGH SAID PAIR OF ARMS AND THE AXIS OF SAID SHANK, SAID LAST MENTIONED PLANE BEING NORMAL TO THE PLANE THAT IS PERPENDICULAR TO SAID ARMS AND PASSES THROUGH THE AXIS OF SAID SHANK, SAID TINES BEING IN UNIFORMLY RADIALLY SPACED RELATION TO SAID SHANK, SAID SHANK HAVING A FRUSTO-CONICAL PORTION EXTENDING SOLELY FROM SAID COMMON PLANE OF SAID SOIL-ENGAGEABLE ENDS OF SAID TINES TO THE JUNCTURE OF SAID ARMS WITH SAID SHANK, SAID FRUSTO-CONICAL PORTION BEING OF GRADUALLY INCREASING DIAMETER FROM SAID LAST MENTIONED PLANE.
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) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |