US3275340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fifth wheel safety device
Assignee: Individual
•
Filing: 1964-12-03
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Granted: 1966-09-27
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Expires: 1984-12-03
Abstract
No abstract record available.
Inventors
- 👤 Sancioni Aurelio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:20
CPC Classifications
B; B62; B62D; B62D53/00; B62D53/04; B62D53/08; B62D53/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
IN COMBINATION WITH A TRACTOR CARRYING A FIFTH WHEEL AND A TRAILER HAVING A DEPENDING KING PIN, A SAFETY DEVICE COMPRISING AN ELONGATED ARCUATE SLOT IN SAID FIFTH WHEEL WHEREBY THE KING PIN ENGAGES AGAINST A PORTION OF THE SIDE WALL OF THE ARCUATE SLOT WHEN A PULLING FORCE IS EXERTED BY THE TRACTOR, A PAIR OF JAW MEMBERS HAVING COMPLEMENTARY SEMI-CIRCULAR JAW SURFACES ENGAGING AROUND THE KING PIN WHEN CLOSED, PIVOTED TO THE UPPER SIDE OF SAID FIFTH WHEEL ON OPPOSITE SIDES OF SAID SLOT, A HANDLE MEMBER SECURED TO ONE OF SAID JAWS AND MEANS FOR SECURING SAID HANDLE TO PREVENT RELEASE OF SAID ONE JAW, THE OTHER JAW BEING HELD IN LOCKED POSITION BY SAID ONE JAW.
Claim 2
Dependent Claim
120 words
IN COMBINATION WITH A TRACTOR CARRYING A FIFTH WHEEL AND A TRAILER HAVING A DEPENDING KING PIN, A SAFETY DEVICE COMPRISING AN ELONGATED ARCUATE SLOT IN SAID FIFTH WHEEL WHEREBY THE KING PIN ENGAGES AGAINST A PORTION OF THE SIDE WALL OF THE ARCUATE SLOT WHEN A PULLING FORCE IS EXERTED BY THE TRACTOR, A PAIR OF JAW MEMBERS HAVING COMPLEMENTARY SEMI-CIRCULAR JAW SURFACES ENGAGING AROUND THE KING PIN WHEN CLOSED, PIVOTED TO THE UPPER SIDE OF SAID FIFTH WHEEL ON OPPOSITE SIDES OF SAID SLOT, A HANDLE MEMBER SECURED TO ONE OF SAID JAWS AND MEANS FOR SECURING SAID HANDLE TO PREVENT RELEASE OF SAID ONE JAW, THE OTHER JAW BEING HELD IN LOCKED POSITION BY SAID ONE JAW.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |