Abstract: A self-leveling boat trailer adapted to be towed behind a vehicle. In one embodiment, the trailer includes a pivotally mounted tongue assembly and a wheeled undercarriage. A flotation system at the stern end of the trailer causes the stern of the trailer to float upon entry into the water. A control linkage is utilized to pivot the tongue assembly in response to the flotation of the trailer stern, lowering the bow end of the trailer, thereby maintaining the trailer in a level position. In a second embodiment, the entire support platform pivots while the tongue assembly and wheeled undercarriage are coupled to a single rigid member. In either embodiment, boat launch and recovery are improved by maintaining the trailer in a level position despite the incline of a typical launching ramp.

Abstract: A boom socket in which the gooseneck assembly and cross pin are supported in rolling contact bearings and in which the construction and materials eliminate free play and minimize corrosion and otherwise reduce maintenance to a minimum.