B - Operations – Transporting – 60 – D
Patent
B - Operations, Transporting
60
D
280/143
B60D 1/30 (2006.01)
Patent
CA 1278590
IMPROVEMENTS IN CONVERTER DOLLIES FOR PUP TRAILERS ABSTRACT OF THE DISCLOSURE A converter dolly assembly for connecting a pup trailer to a main trailer assembly includes an adjustable self-centering assembly between the connector dolly and the steering axle and frame assembly of the pup trailer. An adjustable air bag acts upon a transverse leaf spring to apply pressure centrally thereof and the spring in- cludes a roller mounted centrally thereof which rolls on a horizontally situated double lobed cam on the front of the frame of the pup trailer. The cam has a central recess and the pressure of the spring normally centers the roller and therefor the frame of the pup trailer in alignment with the main trailer assembly. If the pup trailer swings when breaking, the cam acts upon the roller under pressure to return the roller to the central position thus damping out the swing. Also assists returning the pup trailer to the straight ahead position after a turning maneuver.
538154
Ade & Company
Advance Engineered Products Ltd.
LandOfFree
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