Land vehicles – Wheeled – Articulated vehicle
Patent
1978-11-06
1980-07-22
Silverstrim, John P.
Land vehicles
Wheeled
Articulated vehicle
280446B, B62D 5300
Patent
active
042136270
ABSTRACT:
In an anti-sway type trailer hitch having rearwardly-extending load-levelling bars between a hitch connector element and the side rails of a trailer tongue, braking force is applied between the connector element and a pair of conjointly pivotally mounted housings having rearwardly-opening circular cross-section sockets. The sockets receive circular cross-section rearwardly tapering load-levelling bars. This configuration permits the bars to be rotated occasionally to prevent them from taking a set due to applied load. Load is applied to transfer the trailer's weight away from the hitch through a pair of brackets adjustably mounted on the trailer tongue side rails for movement along the side rails. Each bracket includes a support column slidably receiving a jacking bolt. The jacking bolts include, at their vertically lower ends, eyes or other apparatus for supporting the distal ends of the load-levelling bars. The vertically upper end of each jacking bolt is provided with a jacking head. A small, portable hydraulic jack is selectively positioned between each bracket and its respective jacking head to jack the jacking bolts upwardly and load the bars. When a desired load is achieved, a locking pin is inserted through a transverse passageway in the jacking bolt to maintain the bolt position.
REFERENCES:
patent: 3600004 (1971-08-01), Newkirk
patent: 3801133 (1974-04-01), Thompson
patent: 3900212 (1975-08-01), Ewing
Schrecengost Randall A.
Silverstrim John P.
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