Patent ID: 7452175

Claim:
An apparatus comprising: a vehicle comprising a frame formed as two substantially parallel members extending lengthwise and a hopper secured to the frame; first and second bins sized to receive refuse therein; first and second dumping mechanisms respectively connecting the first and second bins to opposite, exterior sides of the hopper and selectively, independently, and respectively moving the first and second bins between stowed positions at least partially directly underneath the hopper and dumping positions above the hopper; and the first dumping mechanism comprising a torsion member selected from the group consisting of a torsion bar and a torsion tube, a first linkage connecting a first side of the first bin to the torsion member, a second linkage connecting a second side of the first bin to the torsion member for synchronously lifting the first and second sides of the first bin, and a single four-bar linkage applying to the torsion member substantially exclusively a torsional load to move synchronously the first and second sides of the first bin between the stowed and dumping positions.