Patent ID: 6098754
Filing Date: 2000-08-08
Classification: B62D,F16N

Abstract:
A pneumatic greasing system for a fifth wheel of a tractor and semitrailer rig, the semitrailer having an upper plate including a kingpin depending from the upper plate and the tractor having a lower plate including a slot adapted for receiving the kingpin so that the weight of the semitrailer bears upon the lower plate when the kingpin engages the slot, comprising:a) a pneumatic grease pump;b) a grease reservoir connected to said grease pump;c) a compressed air supply means for supplying said pneumatic grease pump with a supply of compressed air;d) electrical means for activating said pneumatic grease pump;e) a lower plate adapted to be attached to a tractor, the lower plate being adapted for receiving a kingpin depending from the upper plate of a semitrailer, said lower plate including a top bearing surface and a bottom surface, said lower plate having a plurality of grease orifices extending axially through said lower plate;f) a grease pan having a plurality of compartments attached to the bottom surface of said lower plate; andg) grease delivery means for delivering grease from said pneumatic grease pump to a grease manifold and said grease pan when said electrical means is activated.