US3213946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mounting for rotary hoe type soil cultivators
Assignee: Calkins Manufacturing Co
•
Filing: 1963-09-09
•
Granted: 1965-10-26
•
Expires: 1983-09-09
Abstract
No abstract record available.
Inventors
- 👤 Lawrence K Carrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:12
CPC Classifications
A; A01; A01B; A01B21/00; A01B21/08; A01B21/083; A01B35/00; A01B35/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A SOIL CULTIVATOR COMPRISING: A WHEELED FRAME; A PLURALITY OF ADJACENT SECTIONS OF ROTATABLE HOES ARRANGED IN TANDEM BENEATH THE FRAME; THE SECTIONS EXTENDING TRANSVERSELY TO THE DIRECTION OF TRAVEL OF THE FRAME AND MEANS PIVOTALLY CONNECTING SAID SECTIONS INTERMEDIATE THEIR ENDS TO THE FRAME FOR ROCKING MOVEMENT ABOUT AXES THAT EXTEND IN THE DIRECTION OF TRAVEL OF THE FRAME; RESILIENT BAR MEANS RIGIDLY CONNECTED FROM A POINT ON EACH SECTION SPACED FROM ITS PIVOTAL CONNECTION TO THE FRAME TO A CORRESPONDING POINT ON THE NEXT ADJACENT SECTION; AND MEANS CONNECTED FROM SAID BAR MEANS TO ONE OF SAID SECTIONS ADJUSTABLE TO APPLY A VARIABLE BENDING FORCE TO SAID BAR MEANS FOR LIFTING ONE OF SAID SECTIONS WITH RESPECT TO THE OTHER.
Claim 2
Dependent Claim
122 words
A SOIL CULTIVATOR COMPRISING: A WHEELED FRAME; A PLURALITY OF ADJACENT SECTIONS OF ROTATABLE HOES ARRANGED IN TANDEM BENEATH THE FRAME; THE SECTIONS EXTENDING TRANSVERSELY TO THE DIRECTION OF TRAVEL OF THE FRAME AND MEANS PIVOTALLY CONNECTING SAID SECTIONS INTERMEDIATE THEIR ENDS TO THE FRAME FOR ROCKING MOVEMENT ABOUT AXES THAT EXTEND IN THE DIRECTION OF TRAVEL OF THE FRAME; RESILIENT BAR MEANS RIGIDLY CONNECTED FROM A POINT ON EACH SECTION SPACED FROM ITS PIVOTAL CONNECTION TO THE FRAME TO A CORRESPONDING POINT ON THE NEXT ADJACENT SECTION; AND MEANS CONNECTED FROM SAID BAR MEANS TO ONE OF SAID SECTIONS ADJUSTABLE TO APPLY A VARIABLE BENDING FORCE TO SAID BAR MEANS FOR LIFTING ONE OF SAID SECTIONS WITH RESPECT TO THE OTHER.
References Cited (Backward Citations)
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US1689053A
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US2469622A
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US2970656A
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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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |