Patent ID: 8668426
Filing Date: 2014-03-11
Classification: B60P

Abstract:
1. A drop-floor trailer comprising a wheeled U-shaped frame having side members, an open side, and a closed side opposite the open side; a raising/descending mechanism installed on the U-shaped frame of the trailer; a drive mechanism for the raising/descending mechanism installed on the closed side of the U-shaped frame; and a drop floor positioned within the U-shaped frame in a space between the side members without contact therewith and freely suspended from the raising/descending mechanism under its own gravity on suspension rods, wherein the raising/descending mechanism comprises a pair of articulated linkage parallelograms installed on the side members and wherein each articulated linkage mechanism of the pair is installed on a respective side member of the U-shaped frame and comprises an articulated linkage parallelogram, one link of which comprises a respective side member, a pair of vertical struts, one end of which is pivotally connected to the respective side member and the other end of which is interconnected through a horizontal bar that is pivotally connected to said other ends, one vertical strut of the pair being located adjacent to the open end of the U-shaped frame and the other vertical strut being located adjacent to the closed end of the U-shaped frame, said other ends of the vertical struts located adjacent to the closed side of the U-shaped frame being interconnected with a cross bar that is pivotally connected to said other ends located adjacent to the closed side of the U-shaped frame; wherein the suspension rods being pivotally connected to said other ends of the vertical struts.