Abstract: A head-mounted display may include a display system and an optical system in a housing. The display system may have displays that produce images. Positioners may be used to move the displays relative to the eye positions of a user's eyes. An adjustable optical system may include tunable lenses such as tunable cylindrical liquid crystal lenses. The displays may be viewed through the lenses when the user's eyes are at the eye positions. A sensor may be incorporated into the head-mounted display to measure refractive errors in the user's eyes. The sensor may include waveguides and volume holograms, and a camera for gathering light that has reflected from the retinas of the user's eyes. Viewing comfort may be enhanced by adjusting display positions relative to the eye positions and/or by adjusting lens settings based on the content being presented on the display and/or measured refractive errors.

Abstract: A piece of furniture having interchangeable components is will have a plurality of interchangeable leg members. Cross-bar members are removably coupled to the plurality of leg members. The cross-bar members are adjustable in length. Cross-bar covers are removably coupled to the cross-bar members. A table top is removably coupled to the cross-bar covers.

Abstract: An adjustable height table having bench seats has a frame member having a hollow central area and a predetermined thickness. The frame member will have a channeling formed on an interior section of the thickness. At least one padded member is moveably coupled to the thickness of the frame member for forming a surface to rest a person's feet. The padded member moves away and down from the frame member to form bench seats to sit around the adjustable height table. A finished table surface is positioned on a top portion of the frame member within the channeling. A lifting mechanism is located withing the hollow central area of the frame member for raising and lowering a height of the finished table surface. A “Lazy Susan” may be located substantially at a middle portion of the lifting mechanism and coupled to the finished table surface for rotating the finished table surface.

Abstract: A combination chair/ottoman and table assembly has a plurality of chairs/ottomans adapted to be alternatively positioned adjacent to one another and separated from one another. Each of the plurality of chairs/ottomans has a hollow interior section for storing items. A finished table surface is positioned at a top portion of each of the plurality of chairs/ottomans. A positioning member is adapted to position each of the plurality of chairs/ottomans adjacent to another of the plurality of chairs/ottomans. A “Lazy Susan” is located substantially at a middle portion of the positioning member.

Abstract: A combination chair/ottoman and table assembly has a plurality of chairs/ottomans adapted to be alternatively positioned adjacent to one another and separated from one another. Each of the plurality of chairs/ottomans has a hollow interior section for storing items. A finished table surface is positioned at a top portion of each of the plurality of chairs/ottomans. A positioning member is adapted to position each of the plurality of chairs/ottomans adjacent to another of the plurality of chairs/ottomans. A “Lazy Susan” is located substantially at a middle portion of the positioning member.

Abstract: A piece of furniture having interchangeable components is will have a plurality of interchangeable leg members. Cross-bar members are removably coupled to the plurality of leg members. The cross-bar members are adjustable in length. Cross-bar covers are removably coupled to the cross-bar members. A table top is removably coupled to the cross-bar covers.

Abstract: A combination coffee table and ottoman and method, in which four quadrant-shaped ottomans may be selectively deployed as individual combination ottoman/coffee tables or positioned adjacently to form a single combination ottoman/coffee table.

Abstract: A Boat Ladder is provided which can be in the form of a complete ladder or a kit for mounting a ladder on a boat. The ladder preferably includes two or more ladder sections which can be readily connected and disassembled and easily stowed. Two mounting brackets are designed for use on a variety of gunwhales of boats. The lower section of the ladder has two threaded mounting pins which are adjustably held in the brackets to level the ladder and the pins can be easily separated from the mounting brackets when the ladder is not in use. The mounting pins are also pivoted so as to be swung out of the way along the rails of the ladder, when not in use.