Patent US3343889A successfully refreshed from Google Patents.
US3343889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crawler tractor suspension
Assignee: International Motors LLC
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Filing: 1964-08-04
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Granted: 1967-09-26
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Expires: 1984-08-04
Abstract
No abstract record available.
Inventors
- 👤 Bexten Eugen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:34
CPC Classifications
B; B62; B62D; B62D55/00; B62D55/08; B62D55/30; B62D55/305; B62D55/104; B62D55/112; B62D55/1125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
IN A CRAWLER VEHICLE INCLUDING AN ENDLESS TRACK CHAIN AT A SIDE THEREOF, SUSPENSION MEANS FOR THAT SIDE OF THE VEHICLE INCLUDING: TANDEM ROAD WHEELS COMPRISING SMALL WHEELS AT THE FRONT AND CENTER, RESPECTIVELY OF THE VEHICLE; AND A LARGE REAR DRIVE WHEEL ROTATABLY MOUNTED TO THE VEHICLE ON A FIRST AXIS; A LONGITUDINALLY EXTENDING BEAM HAVING INNER AND OUTER ENDS, AND HAVING TWO WHEEL SPINDLES CARRIED ONE AT EACH OF THE ENDS AND EACH ROTATABLY CONNECTED TO ONE OF THE SMALL WHEELS AT THAT END; AND A TRANSVERSELY EXTENDING SHAFT ON SAID VEHICLE FREELY JOURNALED TO THE MIDPORTION OF THE BEAM, FOR SUPPORTING THE BEAM TO OSCILLATE UNBIASED ABOUT A SECOND AXIS, SAID AXES OF WHEELS HAVING PROPORTIONS AND LOCATIONS EFFECTIVELY PROVIDING: AN UPWARD OFFSET OF THE SECOND AXIS RELATIVE TO THE PLANE COMMON TO THE SPINDLES OF THE SMALL WHEELS WHICH IS APPROXIMATELY 3% OF THE SMALL WHEEL DIAMETER; A LARGE WHEEL DIAMETER WHICH IS APPROXIMATELY 120% OF THE SMALL WHEEL DIAMETER; AND A WHEELBASE WHICH IS APPROXIMATELY 200% OF THE LARGE WHEEL DIAMETER.
Claim 2
Dependent Claim
176 words
IN A CRAWLER VEHICLE INCLUDING AN ENDLESS TRACK CHAIN AT A SIDE THEREOF, SUSPENSION MEANS FOR THAT SIDE OF THE VEHICLE INCLUDING: TANDEM ROAD WHEELS COMPRISING SMALL WHEELS AT THE FRONT AND CENTER, RESPECTIVELY OF THE VEHICLE; AND A LARGE REAR DRIVE WHEEL ROTATABLY MOUNTED TO THE VEHICLE ON A FIRST AXIS; A LONGITUDINALLY EXTENDING BEAM HAVING INNER AND OUTER ENDS, AND HAVING TWO WHEEL SPINDLES CARRIED ONE AT EACH OF THE ENDS AND EACH ROTATABLY CONNECTED TO ONE OF THE SMALL WHEELS AT THAT END; AND A TRANSVERSELY EXTENDING SHAFT ON SAID VEHICLE FREELY JOURNALED TO THE MIDPORTION OF THE BEAM, FOR SUPPORTING THE BEAM TO OSCILLATE UNBIASED ABOUT A SECOND AXIS, SAID AXES OF WHEELS HAVING PROPORTIONS AND LOCATIONS EFFECTIVELY PROVIDING: AN UPWARD OFFSET OF THE SECOND AXIS RELATIVE TO THE PLANE COMMON TO THE SPINDLES OF THE SMALL WHEELS WHICH IS APPROXIMATELY 3% OF THE SMALL WHEEL DIAMETER; A LARGE WHEEL DIAMETER WHICH IS APPROXIMATELY 120% OF THE SMALL WHEEL DIAMETER; AND A WHEELBASE WHICH IS APPROXIMATELY 200% OF THE LARGE WHEEL DIAMETER.
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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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |