20100052279 | Mechanically-Driven Flip Axle Assembly And Method Of Making - A trailer assembly includes a trailer frame that supports a load to be carried. One or more axles have laterally-spaced wheels and are affixed to the trailer frame. A flip axle assembly is provided including one or more axles having laterally-spaced wheels. The flip axle assembly is hingeably mounted to the trailer frame, so as to be rotated from engagement with a road surface and onto the trailer frame. A drive system is provided that rotates the flip axle assembly between the trailer frame and engagement with the road surface. | 03-04-2010 |