Patent US3701939A successfully refreshed from Google Patents.
US3228546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tractor-trailer hitch
Assignee: Individual
•
Filing: 1963-11-15
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Granted: 1966-01-11
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Expires: 1983-11-15
Abstract
No abstract record available.
Inventors
- 👤 Harry J Bunch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:25
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/06; B60P3/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
201 words
A TRACTOR-TRAILER HITCH FOR A TRAILER HAVING A CHASSIS FRAME INCLUDING A PAIR OF OPPOSED ENDS, A PAIR OF LATERALLYSPACED AND CONFRONTING PLATES PIVOTALLY MOUNTED ON SAID CHASSIS FRAME, AN INVERTED SUBSTANTIALLY U-SHAPED CHANNEL MEMBER HAVING ONE OF ITS ENDS PIVOTALLY CONNECTED TO SAID PLATES AND HAVING THE OTHER END THEREOF EXTENDING BEYOND ONE OF SAID ENDS OF SAID CHASSIS FRAME, A PAIR OF L-SHAPED LEVERS PIVOTALLY CONNECTED INTERMEDIATE THEIR RESPECTIVE ENDS ON SAID U-SHAPED CHANNEL MEMBER ADJACENT THE OTHER END THEREOF, A SUBSTANTIALLY U-SHAPED COUPLER HAVING A PAIR OF CONFRONTING ARMS SECURED, RESPECTIVELY, TO AN ADJACENT PAIR OF ENDS OF SAID L-SHAPED MEMBERS, AN H-SHAPED CONNECTOR HAVING SIDE WALLS CONNECTED BY A BIGHT, SAID CONNECTOR HAVING ONE OF ITS ENDS PIVOTALLY CONNECTED ON SAID PLATES, AN ELONGATED ROD HAVING ONE OF ITS ENDS PIVOTALLY CONNECTED WITH THE OTHER END OF SAID CONNECTOR, MEANS PIVOTALLY CONNECTING THE OTHER END OF SAID ROD WITH THE OTHER ADJACENT PAIR OF ENDS OF SAID L-SHAPED MEMBERS, AND A SECOND ROD HAVING AN END THEREOF PIVOTALLY CONNECTED WITH SAID CHASSIS FRAME AND ITS OTHER END FIXEDLY CONNECTED WITH SAID PLATES, SAID SECOND ROD BEING AXIALLY-ADJUSTABLE TO VERTICALLY ADJUST SAID ONE END OF SAID CHASSIS FRAME.
Claim 2
Dependent Claim
201 words
A TRACTOR-TRAILER HITCH FOR A TRAILER HAVING A CHASSIS FRAME INCLUDING A PAIR OF OPPOSED ENDS, A PAIR OF LATERALLYSPACED AND CONFRONTING PLATES PIVOTALLY MOUNTED ON SAID CHASSIS FRAME, AN INVERTED SUBSTANTIALLY U-SHAPED CHANNEL MEMBER HAVING ONE OF ITS ENDS PIVOTALLY CONNECTED TO SAID PLATES AND HAVING THE OTHER END THEREOF EXTENDING BEYOND ONE OF SAID ENDS OF SAID CHASSIS FRAME, A PAIR OF L-SHAPED LEVERS PIVOTALLY CONNECTED INTERMEDIATE THEIR RESPECTIVE ENDS ON SAID U-SHAPED CHANNEL MEMBER ADJACENT THE OTHER END THEREOF, A SUBSTANTIALLY U-SHAPED COUPLER HAVING A PAIR OF CONFRONTING ARMS SECURED, RESPECTIVELY, TO AN ADJACENT PAIR OF ENDS OF SAID L-SHAPED MEMBERS, AN H-SHAPED CONNECTOR HAVING SIDE WALLS CONNECTED BY A BIGHT, SAID CONNECTOR HAVING ONE OF ITS ENDS PIVOTALLY CONNECTED ON SAID PLATES, AN ELONGATED ROD HAVING ONE OF ITS ENDS PIVOTALLY CONNECTED WITH THE OTHER END OF SAID CONNECTOR, MEANS PIVOTALLY CONNECTING THE OTHER END OF SAID ROD WITH THE OTHER ADJACENT PAIR OF ENDS OF SAID L-SHAPED MEMBERS, AND A SECOND ROD HAVING AN END THEREOF PIVOTALLY CONNECTED WITH SAID CHASSIS FRAME AND ITS OTHER END FIXEDLY CONNECTED WITH SAID PLATES, SAID SECOND ROD BEING AXIALLY-ADJUSTABLE TO VERTICALLY ADJUST SAID ONE END OF SAID CHASSIS FRAME.
References Cited (Backward Citations)
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US2848126A
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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) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |