US3302728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plow safety standard
Assignee: Deere and Co
•
Filing: 1964-11-20
•
Granted: 1967-02-07
•
Expires: 1984-11-20
Abstract
No abstract record available.
Inventors
- 👤 James F Sullivan
- 👤 Loren G Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:29
CPC Classifications
A; A01; A01B; A01B61/00; A01B61/04; A01B61/044
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
IN A PLOW OR THE LIKE, A MAIN BEAM EXTENDING IN A GENERALLY FORE-AND-AFT DIRECTION, A GENERALLY VERTICAL PLOW STANDARD, A PLOW BOTTOM FIXED TO THE LOWER PORTION OF SAID STANDARD, A GENERALLY L-SHAPED MEMBER HAVING AN UPPER FORWARDLY EXTENDING PART AND A LOWER DOWNWARDLY EXTENDING PART, FIRST MEANS PIVOTALLY CONNECTING THE FORWARD PORTION OF SAID FORWARDLY EXTENDING PART TO SAID MAIN BEAM, SECOND MEANS PIVOTALLY CONNECTING THE LOWER PORTION OF SAID DOWNWARDLY EXTENDING PART TO SAID STANDARD BELOW THE UPPER END THEREOF, AN UPPER LINK, THIRD MEANS PIVOTALLY CONNECTING THE UPPER LINK AT ITS FORWARD END TO THE MAIN BEAM TO THE REAR OF THE FIRST MEANS, FOURTH MEANS AND PIVOTALLY CONNECTING THE REAR END PORTION OF SAID UPPER LINK WITH THE UPPER PORTION OF SAID STANDARD, MEANS YIELDABLY RESTRAINING SAID L-SHAPED MEMBER AGAINST UPWARD MOVEMENT RELATIVE TO SAID MAIN BEAM, AND MEANS RELEASABLY CONNECTING THE REAR PORTION OF SAID UPPER LINK WITH THE UPPER PART OF SAID STANDARD.
Claim 2
Dependent Claim
160 words
IN A PLOW OR THE LIKE, A MAIN BEAM EXTENDING IN A GENERALLY FORE-AND-AFT DIRECTION, A GENERALLY VERTICAL PLOW STANDARD, A PLOW BOTTOM FIXED TO THE LOWER PORTION OF SAID STANDARD, A GENERALLY L-SHAPED MEMBER HAVING AN UPPER FORWARDLY EXTENDING PART AND A LOWER DOWNWARDLY EXTENDING PART, FIRST MEANS PIVOTALLY CONNECTING THE FORWARD PORTION OF SAID FORWARDLY EXTENDING PART TO SAID MAIN BEAM, SECOND MEANS PIVOTALLY CONNECTING THE LOWER PORTION OF SAID DOWNWARDLY EXTENDING PART TO SAID STANDARD BELOW THE UPPER END THEREOF, AN UPPER LINK, THIRD MEANS PIVOTALLY CONNECTING THE UPPER LINK AT ITS FORWARD END TO THE MAIN BEAM TO THE REAR OF THE FIRST MEANS, FOURTH MEANS AND PIVOTALLY CONNECTING THE REAR END PORTION OF SAID UPPER LINK WITH THE UPPER PORTION OF SAID STANDARD, MEANS YIELDABLY RESTRAINING SAID L-SHAPED MEMBER AGAINST UPWARD MOVEMENT RELATIVE TO SAID MAIN BEAM, AND MEANS RELEASABLY CONNECTING THE REAR PORTION OF SAID UPPER LINK WITH THE UPPER PART OF SAID STANDARD.
References Cited (Backward Citations)
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US2312405A
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US2850957A
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US2833198A
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US3032122A
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US3191688A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |