US Patent 7422267 Vehicle enclosure

Method of controlling the climate in a recreational vehicle with an accessory door assembly such as for a golf cart, method of mounting a door assembly, and method of golfing. The door assembly includes a doorframe that can be secured to the vehicle, and a preferably rigid door that is easily mountable and demountable, and is movable between an open and closed position. The door can be secured to the vehicle in the open position so that the passengers have the option of riding in the vehicle while the door remains open. A hinge system minimizes the clearance necessary to open and close the door, and provides an optional assist feature that helps urge or bias the door to the open or closed position and maintain it there.