Patent US3357750A successfully refreshed from Google Patents.
US3357750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hinged track
Assignee: FMC Corp
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Filing: 1965-10-06
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Granted: 1967-12-12
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Expires: 1985-10-06
Abstract
No abstract record available.
Inventors
- 👤 Ralph K Reynolds
- 👤 David L Whitaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:56
CPC Classifications
B; B62; B62D; B62D55/00; B62D55/08; B62D55/18; B62D55/20; B62D55/205
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
110 words
A CRAWLER CHAIN ASSEMBLY COMPRISING A PLURLITY OF GROUND ENGAGING TRACK SHOES, A PLURALITY OF PREASSEMBLED LEAF HINGES FOR INDIVIDUALLY PIVOTALLY INTERCONNECTING EACH ADJACENT PAIR OF SAID TRACK SHOES, EACH HINGE INCLUDING AT LEAST TWO LEAVES COUPLED BY A PIVOT PIN, EACH LEAD OF EACH SAID HINGE BEING SUPERIMPOSED ON A LEAF OF AN ADJACENT HINGE, COMMON ATTACHMENT MEANS SECURING ONE OF THE LEAVES OF A HINGE TO ONE OF SAID TRACK SHOES AND TO ONE LEAD OF A FIRST ADJACENT HINGE, AND COMMON ATTACHMENT MEANS SECURING THE OTHER LEAD OF SAID FIRST MENTIONED HINGE TO THE NEXT ADJACENT TRACK SHOE AND TO A LEAF OF A SECOND ADJACENT HINGE.
References Cited (Backward Citations)
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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) | 1970-12-11 | 1971-06-12 | 1971-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-11 | 1975-06-12 | 1975-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-11 | 1979-06-12 | 1979-12-12 | $7700.00 | Window Closed / Lapsed |