Patent US3320730A successfully refreshed from Google Patents.
US3320730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corn picker
Assignee: International Motors LLC
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Filing: 1965-02-24
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Granted: 1967-05-23
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Expires: 1985-02-24
Abstract
No abstract record available.
Inventors
- 👤 Barkstrom Reynold
- 👤 Ralph L Sutton
- 👤 Drayer T Gary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:48
CPC Classifications
A; A01; A01D; A01D45/00; A01D45/02; Y; Y10; Y10S; Y10S56/00; Y10S56/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
335 words
A TRACTOR MOUNTED CORN PICKER AND PROCESSING UNIT COMPRISING: A TRACTOR OF THE TYPE HAVING A LONGITUDINALLY EXTENDING CHASSIS, A REAR WHEEL AXLE UNIT, A DIRIGIBLE FRONT WHEEL SUPPORT, A HITCH ROCKSHAFT HAVING A LEVER ARM SECURED THERETO, A FRONT SUPPORT CARRIED BY SAID CHASSIS BETWEEN THE REAR WHEEL AXLE UNIT AND THE FRONT WHEEL SUPPORT, AND A REAR SUPPORT CARRIED BY SAID REAR WHEEL AXLE UNIT, SAID FRONT AND REAR SUPPORTS ACCESSIBLE AND UNOBSTRUCTED FROM BELOW THE TRACTOR; A LONGITUDINALLY EXTENDING IMPLEMENT MAIN FRAME HAVING FRONT AND REAR PORTIONS, FRONT GUIDES MOUNTED ON THE TO OF THE SAID FRONT PORTION ADAPTED TO ENGAGE THE FRONT SUPPORT WHEN THE LONGITUDINALLY EXTENDING IMPLEMENT MAIN FRAME IS ELEVATED, COUPLING MEANS FOR AUTOMATICALLY PIVOTALLY CONNECTING SAID FRONT TUIDE TO SAID FRONT SUPPORT, LIFTING LINKS SECURED AT ONE END TO SAID REAR PORTION AND ADAPTED TO BE CONNECTED AT THE OTHER END TO THE LEVER ARM OF SAID HITCH ROCKSHAFT, INTERENGAGING LATCH MEANS ON SAID REAR SUPPORT AND SAID REAR PORTION FOR LOCKING THE REAR PORTION OF SAID LONGITUDINALLY EXTENDING IMPLEMENT MAIN FRAME IN AN ELEVATED POSITION; MEANS ON SAID LONGITUDINALLY EXTENDING IMPLEMENT MAIN FRAME FOR SUPPORTING A CORN PICKING UNIT; A CORN PROCESSING UNIT ADAPTED TO BE SECURED TO THE REAR PORTION OF SAID LONGITUDINALLY EXTENDING IMPLEMENT MAIN FRAME; COUPLING MEANS ON THE REAR PORTION OF SAID LONGITUDINALLY EXTENDING MAIN FRAME AND ON SAID CORN PROCESSING UNIT FOR RELEASABLY CONNECTING THESE UNITS, SUCH THAT THE CENTER OF GRAVITY OF THE LONGITUDINALLY EXTENDING MAIN FRAME INCLUDING THE CORN PROCESSING UNIT IS REARWARDLY OF THE POINT WHERE THE LIFTING LINKS ARE CONNECTED TO THE MAIN FRAME SO THAT WHEN THE HITCH ROCKSHAFT IS ACTUATED THE FRONT PORTION OF THE MAIN FRAME IS ELEVATED AND PIVOTALLY CONNECTED TO SAID FRONT SUPPORT AND UPON FURTHER ACTUATION OF THE HITCH ROCKSHAFT THE REAR PORTION OF THE MAIN FRAME IS ELEVATED TO A POSITION WHERE SAID INTERENGAGING LATCH MEANS CAN BE ENGAGED TO CONNECT THE MAIN FRAME TO THE TRACTOR IN AN ELEVATED POSITION.
Claim 2
Dependent Claim
335 words
A TRACTOR MOUNTED CORN PICKER AND PROCESSING UNIT COMPRISING: A TRACTOR OF THE TYPE HAVING A LONGITUDINALLY EXTENDING CHASSIS, A REAR WHEEL AXLE UNIT, A DIRIGIBLE FRONT WHEEL SUPPORT, A HITCH ROCKSHAFT HAVING A LEVER ARM SECURED THERETO, A FRONT SUPPORT CARRIED BY SAID CHASSIS BETWEEN THE REAR WHEEL AXLE UNIT AND THE FRONT WHEEL SUPPORT, AND A REAR SUPPORT CARRIED BY SAID REAR WHEEL AXLE UNIT, SAID FRONT AND REAR SUPPORTS ACCESSIBLE AND UNOBSTRUCTED FROM BELOW THE TRACTOR; A LONGITUDINALLY EXTENDING IMPLEMENT MAIN FRAME HAVING FRONT AND REAR PORTIONS, FRONT GUIDES MOUNTED ON THE TO OF THE SAID FRONT PORTION ADAPTED TO ENGAGE THE FRONT SUPPORT WHEN THE LONGITUDINALLY EXTENDING IMPLEMENT MAIN FRAME IS ELEVATED, COUPLING MEANS FOR AUTOMATICALLY PIVOTALLY CONNECTING SAID FRONT TUIDE TO SAID FRONT SUPPORT, LIFTING LINKS SECURED AT ONE END TO SAID REAR PORTION AND ADAPTED TO BE CONNECTED AT THE OTHER END TO THE LEVER ARM OF SAID HITCH ROCKSHAFT, INTERENGAGING LATCH MEANS ON SAID REAR SUPPORT AND SAID REAR PORTION FOR LOCKING THE REAR PORTION OF SAID LONGITUDINALLY EXTENDING IMPLEMENT MAIN FRAME IN AN ELEVATED POSITION; MEANS ON SAID LONGITUDINALLY EXTENDING IMPLEMENT MAIN FRAME FOR SUPPORTING A CORN PICKING UNIT; A CORN PROCESSING UNIT ADAPTED TO BE SECURED TO THE REAR PORTION OF SAID LONGITUDINALLY EXTENDING IMPLEMENT MAIN FRAME; COUPLING MEANS ON THE REAR PORTION OF SAID LONGITUDINALLY EXTENDING MAIN FRAME AND ON SAID CORN PROCESSING UNIT FOR RELEASABLY CONNECTING THESE UNITS, SUCH THAT THE CENTER OF GRAVITY OF THE LONGITUDINALLY EXTENDING MAIN FRAME INCLUDING THE CORN PROCESSING UNIT IS REARWARDLY OF THE POINT WHERE THE LIFTING LINKS ARE CONNECTED TO THE MAIN FRAME SO THAT WHEN THE HITCH ROCKSHAFT IS ACTUATED THE FRONT PORTION OF THE MAIN FRAME IS ELEVATED AND PIVOTALLY CONNECTED TO SAID FRONT SUPPORT AND UPON FURTHER ACTUATION OF THE HITCH ROCKSHAFT THE REAR PORTION OF THE MAIN FRAME IS ELEVATED TO A POSITION WHERE SAID INTERENGAGING LATCH MEANS CAN BE ENGAGED TO CONNECT THE MAIN FRAME TO THE TRACTOR IN AN ELEVATED POSITION.
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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) | 1970-05-22 | 1970-11-21 | 1971-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-22 | 1974-11-21 | 1975-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-22 | 1978-11-21 | 1979-05-23 | $7700.00 | Window Closed / Lapsed |