US3092399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fifth wheel control device
Assignee: Ford Motor Co
•
Filing: 1961-12-04
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Granted: 1963-06-04
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Expires: 1981-12-04
Abstract
No abstract record available.
Inventors
- 👤 Benjamin F Hair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:53
CPC Classifications
B; B62; B62D; B62D53/00; B62D53/04; B62D53/08; B62D53/0871; B62D53/0878
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A TRUCK, A TRAILER, AND MEANS FOR CONNECTING SAID TRUCK AND TRAILER, SAID MEANS INCLUDING A FIFTH WHEEL PIVOTALLY MOUNTED UPON SAID TRUCK, A KINGPIN CARRIED BY SAID TRAILER, LATCHING MEANS ADAPTED TO SECURE SAID KINGPIN TO SAID FIFTH WHEEL, HYDRAULIC STABILIZING MEANS INTERPOSED BETWEEN SAID FIFTH WHEEL AND SAID TRUCK, SAID HYDRAULIC MEANS INCLUDING A PAIR OF HYDRAULIC PISTON AND CYLINDER ASSEMBLIES SITUATED FORE AND AFT THE PIVOT OF SAID FIFTH WHEEL, THE CYLINDERS OF ASSEMBLIES BEING INTERCONNECTED TO A COMMON VALVE DEVICE, SAID VALVE DEVICE HAVING SPRING PRESSED VALVE MEANS RESTRICTING FLUID FLOW BETWEEN SAID CYLINDERS BELOW A PREDETERMINED PRESSURE LIMIT, SAID VALVE MEANS BEING CONNECTED TO SAID LATCHING MEANS AND ADAPTED TO PERMIT FREE FLUID FLOW WHEN SAID LATCHING MEANS IS IN AN UNLOCKED POSITION.
Claim 2
Dependent Claim
128 words
A TRUCK, A TRAILER, AND MEANS FOR CONNECTING SAID TRUCK AND TRAILER, SAID MEANS INCLUDING A FIFTH WHEEL PIVOTALLY MOUNTED UPON SAID TRUCK, A KINGPIN CARRIED BY SAID TRAILER, LATCHING MEANS ADAPTED TO SECURE SAID KINGPIN TO SAID FIFTH WHEEL, HYDRAULIC STABILIZING MEANS INTERPOSED BETWEEN SAID FIFTH WHEEL AND SAID TRUCK, SAID HYDRAULIC MEANS INCLUDING A PAIR OF HYDRAULIC PISTON AND CYLINDER ASSEMBLIES SITUATED FORE AND AFT THE PIVOT OF SAID FIFTH WHEEL, THE CYLINDERS OF ASSEMBLIES BEING INTERCONNECTED TO A COMMON VALVE DEVICE, SAID VALVE DEVICE HAVING SPRING PRESSED VALVE MEANS RESTRICTING FLUID FLOW BETWEEN SAID CYLINDERS BELOW A PREDETERMINED PRESSURE LIMIT, SAID VALVE MEANS BEING CONNECTED TO SAID LATCHING MEANS AND ADAPTED TO PERMIT FREE FLUID FLOW WHEN SAID LATCHING MEANS IS IN AN UNLOCKED POSITION.
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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) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |