Patent attributes
A pneumatic drop frame trailer has lateral wheels connected to the frame by pivotal wheel support arms with airbags between the support arms and frame, a pivotal tongue member with an airbag between the tongue and the frame, a deck having an inclined ramp portion at the rear end, and a control box on the deck containing an air compressor, air storage tank, and associated valves and controls. The wheel airbags and tongue airbag can be inflated or deflated while hitched to a vehicle to raise or lower the frame evenly and horizontally relative to the ground and may also be inflated to provide stiffness or shock absorbing characteristics. When the wheel airbags are deflated, the bottom of the frame is disposed substantially horizontally and very close to the ground surface with the ramp portion substantially flush with the ground surface in a loading and unloading position.
