Patent US3718343A successfully refreshed from Google Patents.
US3718343A
Expired / Lapsed
US
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Ammonia trailer improvements
Assignee: HAMBY Co
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Filing: 1971-04-14
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Granted: 1973-02-27
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Expires: 1991-04-14
Abstract
Abstract THE FRONT WHEELS OF A TRAILER ARE CARRIED BY A RIGID FRAME WHICH IS ATTACHED TO THE FRONT END OF THE TRAILER FRAME BY A FIFTH WHEEL UNIT WHICH PERMITS STEERING MOVEMENT OF THE FRONT WHEEL FRAME RELATIVE TO THE TRAILER FRAME. THE FRONT WHEEL FRAME IS PIVOTABLE RELATIVE TO THE FIFTH WHEEL UNIT FOR TILTING MOVEMENT ABOUT AXIS WHICH IS PARALLEL TO THE DIRECTION OF FRONT WHEEL TRAVEL.
Inventors
- 👤 F Mills
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:28
CPC Classifications
B; B62; B62D; B62D13/00; B62D13/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |