Patent ID: 6152475
Filing Date: 2000-11-28
Classification: B62D

Abstract:
A truck trailer steering apparatus comprising a trailer body wherein said trailer body has a bottom side, a first leading end, and a second trailing end,a coupler plate fixedly attached to said bottom side of said trailer body at said trailing end,a king pin fixedly attached to said coupler plate, extending downwardly and perpendicularly from said bottom side of said trailer body,a converter dolly used for towing a double trailer engaged in said king pin,said converter dolly having a tongue with a pivot pin,at least one hydraulic actuator having two ends, a first end hingedly attached to said pivot pin extending essentially perpendicularly from said tongue, and a second end hingedly attached to said bottom side of said trailer body,a hydraulic pump and motor to drive said hydraulic actuator, anda control mounted in the cab of the tractor towing said trailer body whereby when the driver operates said control, said hydraulic actuator extends or retracts, causing said converter dolly to rotate about said king pin to steer said trailer body.