Patent ID: 8021096
Filing Date: 2011-09-20
Classification: B60P

Abstract:
1. In combination: a truck having forward and rearward ends; said truck including a cab at the forward end thereof; said truck including a wheeled frame which extends rearwardly from said cab; a bed frame secured to said wheeled frame means rearwardly of said cab; said bed frame including longitudinally extending first and second horizontally disposed and horizontally spaced frame rails with forward and rearward ends; a movable carriage assembly longitudinally movably mounted on said bed frame; said carriage assembly including: (a) an elongated front support, having first and second ends, extending between said first and second frame rails of said bed frame; (b) a first roller mounted on said first end of said front support which movably engages said first frame rail of said bed frame; (c) a second roller mounted on said second end of said front support which movably engages said second frame rail of said bed frame; (d) an elongated intermediate support spaced rearwardly of said front support, having first and second ends, extending between said first and second frame rails of said bed frame; (e) a third roller mounted on said first end of said intermediate support which movably engages said first frame rail of said bed frame; (f) a fourth roller mounted on said second end of said intermediate support which movably engages said second frame rail of said bed frame; (g) a rear support, having forward and rearward ends, secured to said intermediate support which extends rearwardly from said intermediate support; (h) a fifth roller secured to said rear support adjacent said rearward end thereof which movably engages one of said first and second frame rails of said bed frame; (i) a first power cylinder, being movable between retracted positions and having a base end and a rod end; (j) said base end of said first power cylinder being secured to said front support; (k) said rod end of said first power cylinder being secured to said intermediate support; (l) a second power cylinder being movable between retracted and extended positions and having a base end and a rod end; (m) said base end of said second power cylinder being secured to said bed frame adjacent the forward end thereof; (n) said rod end of said second power cylinder being secured to said rear support; (o) a pair of elongated pivot arms having first and second ends; (p) said first ends of said pivot arms being operatively pivotally secured to said front support; (q) a bed connector having a first connector portion, an intermediate connector portion and a second connector portion; (r) said first connector portion being pivotally secured to said intermediate support; (s) said first connector portion being pivotally connected to said pair of pivot arms between the pivotal connection of said first connector portion with said intermediate support and said intermediate connector portion;