Abstract: A trailer for use primarily for transporting a portable structure in which a frame is mounted on an undercarriage with the wheels of the undercarriage near the longitudinal center and the portable structure is positioned at an angle to reduce wind resistance while the structure is being transported on the trailer. The portable structure is secured to the trailer by placing the skid plates of the portable structure under frame elements affixed to the trailer frame.

Abstract: A portable toilet system is provided having an enclosed housing and including a tank upon which a toilet seat and bowl is positioned. The tank has two sections divided by a wall. Waste drops into the first section where it is accumulated for collection. The dividing wall does not extend to the top of the tank. The second section is initially filled with fresh water. A pump draws water through a hose or pipe submersed in the second section. That water is flushed into the toilet bowl to rinse waste into the first section. As the water in the second section is depleted, the liquid waste deposited in the first section overflows the dividing wall into the second section of the tank to recycle the liquid waste and extend the period before servicing of the system is necessary.

Abstract: A trailer for use primarily for transporting a portable structure in which a frame is mounted on an undercarriage with the wheels of the undercarriage near the longitudinal center and the portable structure is positioned at an angle to reduce wind resistance while the structure is being transported on the trailer. The portable structure is secured to the trailer by placing the skid plates of the portable structure under frame elements affixed to the trailer frame.