US3112936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shiftable fifth wheel structure
Assignee: Amsted Industries Inc
•
Filing: 1961-12-06
•
Granted: 1963-12-03
•
Expires: 1981-12-06
Abstract
No abstract record available.
Inventors
- 👤 Cole Gordon Estes
- 👤 Kent John Allan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:08
CPC Classifications
B; B62; B62D; B62D53/00; B62D53/04; B62D53/08; B62D53/0807
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
IN A FIFTH WHEEL STRUCTURE, A BASE HAVING SIDE RAILS ADAPTED TO BE SECURED TO SIDE FRAME MEMBERS OF A TRACTOR AND PROVIDED WITH PARALLEL ROWS OF APERTURES, A SADDLE SLIDABLY MOUNTED FOR MOVEMENT ALONG SAID SIDE RAILS, LOCK PINS MOUNTED ON SAID SADDLE FOR ENGAGEMENT IN SELECTED APERTURES IN SAID SIDE RAILS, MEANS OPERABLE TO MOVE SAID LOCK PINS INTO AND OUT OF SAID APERTURES, AND A LATCH MOUNTED ON SAID SADDLE TO ENGAGE SAID MEANS AGAINST ACCIDENTAL MOVEMENT, SAID MEANS COMPRISING AN OPERATING LEVER PIVOTALLY MOUNTED ON SAID SADDLE, BELL CRANK LEVERS ON SAID SADDLE ENGAGING SAID LOCK PINS, LINKS INTERCONNECTING SAID OPERATING LEVER AND RESPECTIVE BELL CRANK LEVERS, AND A MANUAL OPERATING ROD CONNECTED TO SAID OPERATING LEVER AND ENGAGEABLE BY SAID LATCH TO PREVENT ACCIDENTAL MOVEMENT OF SAID LOCK PINS.
Claim 2
Dependent Claim
134 words
IN A FIFTH WHEEL STRUCTURE, A BASE HAVING SIDE RAILS ADAPTED TO BE SECURED TO SIDE FRAME MEMBERS OF A TRACTOR AND PROVIDED WITH PARALLEL ROWS OF APERTURES, A SADDLE SLIDABLY MOUNTED FOR MOVEMENT ALONG SAID SIDE RAILS, LOCK PINS MOUNTED ON SAID SADDLE FOR ENGAGEMENT IN SELECTED APERTURES IN SAID SIDE RAILS, MEANS OPERABLE TO MOVE SAID LOCK PINS INTO AND OUT OF SAID APERTURES, AND A LATCH MOUNTED ON SAID SADDLE TO ENGAGE SAID MEANS AGAINST ACCIDENTAL MOVEMENT, SAID MEANS COMPRISING AN OPERATING LEVER PIVOTALLY MOUNTED ON SAID SADDLE, BELL CRANK LEVERS ON SAID SADDLE ENGAGING SAID LOCK PINS, LINKS INTERCONNECTING SAID OPERATING LEVER AND RESPECTIVE BELL CRANK LEVERS, AND A MANUAL OPERATING ROD CONNECTED TO SAID OPERATING LEVER AND ENGAGEABLE BY SAID LATCH TO PREVENT ACCIDENTAL MOVEMENT OF SAID LOCK PINS.
References Cited (Backward Citations)
US2818272A
Cited
US2755104A
Cited
US2861818A
Cited
US2860891A
Cited
US2868560A
Cited
US2940774A
Cited
US2889154A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-02 | 1967-06-03 | 1967-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-02 | 1971-06-03 | 1971-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-02 | 1975-06-03 | 1975-12-03 | $7700.00 | Window Closed / Lapsed |