Abstract: A method and device for moving an occupied wheelchair between two levels involves tracks mounted on stairs and a pull cable that is substantially aligned with the center of gravity of the chair and is anchored above the upper level. The tracks have a transition section between the lower level and a main slope of the tracks. The device can be used by a wheelchair occupant to ascend or descend the stairs without assistance from any other person. The cable has a winch which can be manually operated by the wheelchair occupant or power operated and controlled by a remote control in the hands of the wheelchair occupant. Previously, wheelchair occupants are moved between two different levels by ramps or elevators.

Abstract: A submersible tail light for use on a boat trailer has a transparent inner shell contained within a housing. The bottom of the inner shell and of the housing is at least partially open and can be covered by a splash plate containing perforations to allow water to drain from the tail light when it is removed from the water. A bulb and socket are supported in the shell by a bracket extending from the bottom of the shell. The inner shell is formed in one piece of impervious transparent material and is air-tight except for the bottom. The housing contains one or more lenses and the bulb or bulbs are centered on the shell. No seals or adhesives are required. The housing protects the inner shell from damage. With previous submersible tail lights, the lens is mounted on the housing using adhesives or seals to obtain an air-tight relationship. When the tail light is no longer air-tight because of the deterioration of the seals or because of damage, the submersible feature becomes inoperable.