US3087748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractible trailer support
Assignee: Amsted Industries Inc
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Filing: 1960-04-04
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Granted: 1963-04-30
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Expires: 1980-04-04
Abstract
No abstract record available.
Inventors
- 👤 Kenneth V Livelsberger
- 👤 Frederick C Kulieke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:42
CPC Classifications
B; B61; B61D; B61D45/00; B61D45/001; B61D45/004; B61D45/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
IN A FIFTH WHEEL ASSEMBLY FOR DETACHABLE ENGAGEMENT WITH A TRAILER KING PIN HAVING A REDUCED NECK PORTION, A LOCKING PLATE HAVING AN ELONGATED OPENING, A FIXED JAW ON SAID PLATE AT ONE END OF SAID OPENING AND HAVING A LIP ADAPTED TO ENGAGE ONE SIDE OF SAID NECK PORTION, A MOVABLE JAW GUIDED FOR LINEAR MOVEMENT ALONG THE LOWER SIDE OF SAID PLATE AND HAVING AN OPENING FOR REGISTRY WITH SAID ELONGATED OPENING IN SAID PLATE TO RECEIVE SAID KING PIN, SAID MOVABLE JAW HAVING A LIP ADAPTED TO ENGAGE THE OTHER SIDE OF SAID NECK PORTION, MEANS TO MOVE SAID MOVABLE JAW RELATIVE TO SAID FIXED JAW, MEANS OPERABLE AUTOMATICALLY RESPONSIVE TO MOVEMENT OF THE MOVABLE JAW TO ITS KING PIN CLAMPING POSITION TO LOCK SAID MOVABLE JAW AGAINST MOVEMENT RELATIVE TO SAID FIXED JAW, SAID LOCKING MEANS COMPRISING TWO LOCKS MOUNTED ON THE LOCKING PLATE ON OPPOSITE SIDES OF THE FIXED JAW FOR ENGAGEMENT BY THE MOVABLE JAW, AND SPRING MEANS URGING SAID LOCKS TOWARD SAID FIXED JAW FOR ENGAGEMENT BY THE MOVABLE JAW.
Claim 2
Dependent Claim
177 words
IN A FIFTH WHEEL ASSEMBLY FOR DETACHABLE ENGAGEMENT WITH A TRAILER KING PIN HAVING A REDUCED NECK PORTION, A LOCKING PLATE HAVING AN ELONGATED OPENING, A FIXED JAW ON SAID PLATE AT ONE END OF SAID OPENING AND HAVING A LIP ADAPTED TO ENGAGE ONE SIDE OF SAID NECK PORTION, A MOVABLE JAW GUIDED FOR LINEAR MOVEMENT ALONG THE LOWER SIDE OF SAID PLATE AND HAVING AN OPENING FOR REGISTRY WITH SAID ELONGATED OPENING IN SAID PLATE TO RECEIVE SAID KING PIN, SAID MOVABLE JAW HAVING A LIP ADAPTED TO ENGAGE THE OTHER SIDE OF SAID NECK PORTION, MEANS TO MOVE SAID MOVABLE JAW RELATIVE TO SAID FIXED JAW, MEANS OPERABLE AUTOMATICALLY RESPONSIVE TO MOVEMENT OF THE MOVABLE JAW TO ITS KING PIN CLAMPING POSITION TO LOCK SAID MOVABLE JAW AGAINST MOVEMENT RELATIVE TO SAID FIXED JAW, SAID LOCKING MEANS COMPRISING TWO LOCKS MOUNTED ON THE LOCKING PLATE ON OPPOSITE SIDES OF THE FIXED JAW FOR ENGAGEMENT BY THE MOVABLE JAW, AND SPRING MEANS URGING SAID LOCKS TOWARD SAID FIXED JAW FOR ENGAGEMENT BY THE MOVABLE 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) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |