Invention Grant
US3796443A Tractor rig and trailer hitch 失效
拖拉机和拖拉机HITCH

Tractor rig and trailer hitch
Abstract:
An improved trailer towing hitch device in which the towing bar is fastened to the tractor directly above the tractor rear axle, with combined lift and anti-sway bars which are attached to the conventional ''''A'''' frame trailer hitch unit, said anti-sway bars being readily disconnected from the tractor towing mechanism, independently of the ball and socket connection of the trailer hitch to the towing bar.
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