Trailer hitch
Abstract
Abstract THIS INVENTION RELATES TO A TRAILER HITCH FOR CONNECTING A TRACTOR TO A TRAILER. THE HITCH INCLUDES A DRAW BAR WHICH HAS A PRIMARY PIVOT POINT CONNECTED TO THE TRACTOR VEHICLE ADJACENT TO THE REAR AXLE THEREOF AND A SECONDARY PIVOT POINT LOCATED AT THE REAR END OF THE TRACTOR VEHICLE AND CONNECTED TO THE TRAILER VEHICLE. THE SECONDARY PIVOT IS PROVIDED WITH HORIZONTAL PIVOT CONTROL MEANS FOR PREVENTING HORIZONTAL PIVOTING ABOUT THE SECONDARY PIVOT POINT UNTIL HORIZONTAL PIVOTING ABOUT THE PRIMARY POINT IS COMPLETED. THE HORIZONTAL PIVOT CONTROL MEANS ALSO INCLUDES MEANS FOR ADJUSTING THE HORIZONTAL PIVOTING FORCE REQUIRED TO PERMIT HORIZONTAL PIVOTING ABOUT THE SECONDARY PIVOT POINT. THE SECONDARY PIVOT POINT CONTROL MEANS ALSO INCLUDES STABILIZER RODS AND A STABILIZER BAR WHICH COOPERATE TO URGE THE DRAW BAR INTO NORMAL AXIAL ALIGNMENT WITH THE TRAILER. THE PRESENT INVENTION ALSO PROVIDES LOAD ADJUSTMENT MEANS FOR DISTRIBUTING THE LOAD APPLIED TO THE TRACTOR VEHICLE BY THE TRAILER. PREFERABLY AND CONVENIENTLY THE LOAD ADJUSTMENT MEANS AND HORIZONTAL PIVOT CONTROL MEANS ARE COMBINED IN A SINGLE STRUCTURE.
Inventors
- 👤 Oscar E Mckee
Bibliographic Details
Claims Analysis
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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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |