Patent US3286448A successfully refreshed from Google Patents.
US3286448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic header control apparatus
Assignee: Roper Wright Manufacturing Co Inc
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Filing: 1964-01-21
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Granted: 1966-11-22
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Expires: 1984-01-21
Abstract
No abstract record available.
Inventors
- 👤 Beverly L Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:45
CPC Classifications
A; A01; A01D; A01D41/00; A01D41/12; A01D41/14; A01D41/141; Y; Y10; Y10S; Y10S56/00; Y10S56/15
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
198 words
IN A COMBINE HAVING A HEADER AND CUTTING MEANS ALONG THE FORWARD EDGE, A HEADER HEIGHT SENSIN AND ADJUSTING APPARATUS, COMPRISING, A PLURALITY OF FEELER MEMBERS SPACED ALONG AND UNDER THE FORWARD EDGE OF SAID CUTTING MEANS, EACH OF SAID MEMBERS BEING PIVOTALLY CONNECTED AT ONE END TO THE FORWARD EDGE OF SAID HEADER, THE OTHER END OF EACH OF SAID FEELER MEMBERS EXTENDING REARWARDLY MEANS FOR NORMALLY URGING SAID FEELER MEMBERS TO PIVOT DOWNWARDLY, EACH OF SAID FEELER MEMBERS BEING CHANNEL- SHAPED WITH THE OPEN SIDE OF SAID CHANNEL FACING UPWARDLY, A ROCKER SHAFT EXTENDING ALONG THE WIDTH OF SAID HEADER REARWARDLY OF SAID FORWARD EDGE, A ROCKER MEMBER FOR EACH OF SAID FEELER MEMBERS WITH ONE END SLIDABLY RECEIVED IN SAID CHANNEL AND THE OTHER END FIXEDLY CONNECTED TO SAID ROCKER SHAFT, A POWER MEANS FOR RAISING AND LOWERING SAID HEADER, AND MEANS OPERATIVELY CONNECTED BETWEEN SAID ROCKER SHAFT AND SAID POWER MEANS TO ADJUST SAID HEADER DOWNWARDLY AS ONE OF SAID FEELER MEMBERS MOVES DOWNWARDLY AND TO ADJUST SAID HEADER UPWARDLY AS SAID FEELER MEMBERS MOVE UPWARDLY, SAID FEELER MEMBERS NORMALLY BEING HELD IN CONTACT WITH THE GROUND BY SAID MEANS FOR URGING THEM DOWNWARDLY.
Claim 2
Dependent Claim
198 words
IN A COMBINE HAVING A HEADER AND CUTTING MEANS ALONG THE FORWARD EDGE, A HEADER HEIGHT SENSIN AND ADJUSTING APPARATUS, COMPRISING, A PLURALITY OF FEELER MEMBERS SPACED ALONG AND UNDER THE FORWARD EDGE OF SAID CUTTING MEANS, EACH OF SAID MEMBERS BEING PIVOTALLY CONNECTED AT ONE END TO THE FORWARD EDGE OF SAID HEADER, THE OTHER END OF EACH OF SAID FEELER MEMBERS EXTENDING REARWARDLY MEANS FOR NORMALLY URGING SAID FEELER MEMBERS TO PIVOT DOWNWARDLY, EACH OF SAID FEELER MEMBERS BEING CHANNEL- SHAPED WITH THE OPEN SIDE OF SAID CHANNEL FACING UPWARDLY, A ROCKER SHAFT EXTENDING ALONG THE WIDTH OF SAID HEADER REARWARDLY OF SAID FORWARD EDGE, A ROCKER MEMBER FOR EACH OF SAID FEELER MEMBERS WITH ONE END SLIDABLY RECEIVED IN SAID CHANNEL AND THE OTHER END FIXEDLY CONNECTED TO SAID ROCKER SHAFT, A POWER MEANS FOR RAISING AND LOWERING SAID HEADER, AND MEANS OPERATIVELY CONNECTED BETWEEN SAID ROCKER SHAFT AND SAID POWER MEANS TO ADJUST SAID HEADER DOWNWARDLY AS ONE OF SAID FEELER MEMBERS MOVES DOWNWARDLY AND TO ADJUST SAID HEADER UPWARDLY AS SAID FEELER MEMBERS MOVE UPWARDLY, SAID FEELER MEMBERS NORMALLY BEING HELD IN CONTACT WITH THE GROUND BY SAID MEANS FOR URGING THEM DOWNWARDLY.
References Cited (Backward Citations)
US2750727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |