Patent US3333645A successfully refreshed from Google Patents.
US3333645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple purpose drawbar
Assignee: Individual
•
Filing: 1964-12-23
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Granted: 1967-08-01
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Expires: 1984-12-23
Abstract
No abstract record available.
Inventors
- 👤 Elmer A Gustafson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:49
CPC Classifications
A; A01; A01B; A01B63/00; A01B63/14; A01B63/16; A01B63/22; A01B23/00; A01B23/04; A01B23/043; A01B73/00; A01B73/02; A01B73/04; A01B73/044
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
266 words
A TRAILER MOUNTED DRAWBAR ASSEMBLY COMPRISING: AN ELONGATED FRAME HAVING A FORWARD AND REAR END, A TONGUE ON SAID FORWARD END FOR HITCHABLE CONNECTION TO A TRACTOR OF THE LIKE, A DRAWBAR SECURED TO SAID REAR END SO AS TO EXTEND TRANSVERSELY OF THE LONGITUDINAL AXIS OF SAID FRAME, MEANS ON SAID DRAWBAR FOR CARRYING A SELECTIVE ARRANGEMENT OF TILLING TOOLS, A WHEEL AT EACH SIDE OF SAID FRAME AT SAID REAR END, EACH WHEEL MOUNTED ON A SEPARATE STUB AXLE RESPECTIVELY, A PAIR OF UPSTANDING SPACED SUPPORTS AN SAID REAR END, A SHAFT JOURNALLED IN SAID SUPPORTS FOR ROTATION ABOUT ITS LONGITUDINAL AXIS, A RESPECTIVE FIRST RIGID LEVER CONNECTED AT ONE END TO EACH RESPECTIVE END OF SAID SHAFT FOR ROTATION THEREWITH, A RESPECTIVE RIGID LINK PIVOTALLY CONNECTED AT ONE END TO EACH RESPECTIVE STUB AXLE AND PIVOTALLY CONNECTED AT ITS OTHER END TO THE RESPECTIVE OTHER ENDS OF SAID FIRST LEVERS, A RESPECTIVE SECOND LEVER PIVOTALLY CONNECTED AT ONE END TO SAID RESPECTIVE STUB AXLES AND SIMILARLY CONNECTED AT ITS OTHER END TO SAID DRAWBAR, AND A TILLING TOOL DISPOSED REARWARDLY OF SAID DRAWBAR, A LINK MEMBER PIVOTALLY CONNECTED AT RESPECTIVE ENDS TO SAID DRAWBAR AND SAID TILLING TOOL, AND POWER MEANS ON SAID FRAME FOR SELECTIVELY ROTATING SAID SHAFT IN TWO OPPOSITE DIRECTIONS WHEREBY SAID REAR END AND SAID DRAWBAR CAN BE SELECTIVELY VERTICALLY RAISED AND LOWERED RESPECTIVELY ABOVE AND BELOW THE PLANE OF SAID AXLES WHEREBY THE LOWERING OF SAID DRAWBAR WILL EXERT A DOWNWARD PRESSURE ON SAID TILLING TOOL AND THE RAISING OF SAID DRAWBAR WILL MOVE SAID TILLING TOOL UPWARDLY.
Claim 2
Dependent Claim
266 words
A TRAILER MOUNTED DRAWBAR ASSEMBLY COMPRISING: AN ELONGATED FRAME HAVING A FORWARD AND REAR END, A TONGUE ON SAID FORWARD END FOR HITCHABLE CONNECTION TO A TRACTOR OF THE LIKE, A DRAWBAR SECURED TO SAID REAR END SO AS TO EXTEND TRANSVERSELY OF THE LONGITUDINAL AXIS OF SAID FRAME, MEANS ON SAID DRAWBAR FOR CARRYING A SELECTIVE ARRANGEMENT OF TILLING TOOLS, A WHEEL AT EACH SIDE OF SAID FRAME AT SAID REAR END, EACH WHEEL MOUNTED ON A SEPARATE STUB AXLE RESPECTIVELY, A PAIR OF UPSTANDING SPACED SUPPORTS AN SAID REAR END, A SHAFT JOURNALLED IN SAID SUPPORTS FOR ROTATION ABOUT ITS LONGITUDINAL AXIS, A RESPECTIVE FIRST RIGID LEVER CONNECTED AT ONE END TO EACH RESPECTIVE END OF SAID SHAFT FOR ROTATION THEREWITH, A RESPECTIVE RIGID LINK PIVOTALLY CONNECTED AT ONE END TO EACH RESPECTIVE STUB AXLE AND PIVOTALLY CONNECTED AT ITS OTHER END TO THE RESPECTIVE OTHER ENDS OF SAID FIRST LEVERS, A RESPECTIVE SECOND LEVER PIVOTALLY CONNECTED AT ONE END TO SAID RESPECTIVE STUB AXLES AND SIMILARLY CONNECTED AT ITS OTHER END TO SAID DRAWBAR, AND A TILLING TOOL DISPOSED REARWARDLY OF SAID DRAWBAR, A LINK MEMBER PIVOTALLY CONNECTED AT RESPECTIVE ENDS TO SAID DRAWBAR AND SAID TILLING TOOL, AND POWER MEANS ON SAID FRAME FOR SELECTIVELY ROTATING SAID SHAFT IN TWO OPPOSITE DIRECTIONS WHEREBY SAID REAR END AND SAID DRAWBAR CAN BE SELECTIVELY VERTICALLY RAISED AND LOWERED RESPECTIVELY ABOVE AND BELOW THE PLANE OF SAID AXLES WHEREBY THE LOWERING OF SAID DRAWBAR WILL EXERT A DOWNWARD PRESSURE ON SAID TILLING TOOL AND THE RAISING OF SAID DRAWBAR WILL MOVE SAID TILLING TOOL UPWARDLY.
References Cited (Backward Citations)
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US2538093A
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US2754647A
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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) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |