Land vehicles – Wheeled – Articulated vehicle
Patent
1976-04-22
1978-01-10
Peters, Jr., Joseph F.
Land vehicles
Wheeled
Articulated vehicle
B62D 5306
Patent
active
040675920
ABSTRACT:
A device that tends to retard or impede the articulating movement between a truck tractor and its associated trailer to thereby reduce the likelihood of the vehicle jacknifing which is especially possible when there are wet or icy road conditions. The tractor and trailer are intercoupled by a conventional fifth wheel assembly comprised of upper and lower fifth wheel plates. The movement impeding device is preferably mounted from the tractor and is pneumatically operated. The device comprises a piston having a resilient end, means for supporting the piston for movement normal to the upper fifth wheel plate, and means for operating the piston so that the resilient end is selectively engaged with the lower surface of the upper fifth wheel plate thereby retarding relative rotation between the trailer and tractor.
REFERENCES:
patent: 2528076 (1950-10-01), Plaxco
patent: 2959429 (1960-11-01), Lavelle
patent: 3136566 (1964-06-01), Harding
patent: 3751070 (1973-08-01), Schaffart
Pekar John A.
Peters Jr. Joseph F.
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