Abstract: A stair device for use in entering and exiting the water from a water vehicle, swim platform or dock. A first embodiment of the stair device is best suited for use on water vehicles and is comprised of an upper tubular section having two parallel tubes each having a straight vertical section, a curved section and a substantially straight horizontal section. A lower tubular section is rotatably mounted to the upper tubular section and is comprised of a single tube having a substantially straight upper portion, a curved portion, and a substantially straight lower portion. A plurality of steps is provided along the lower tubular portion. A second embodiment of the invention is best suited for use on horizontal structures, such as swim platforms and is comprised of an upper tubular portion having two parallel, horizontal tubes and a lower tubular section comprised of a single tube having a substantially straight upper portion, a curved portion, and a substantially straight lower portion.

Abstract: A battery-powered welder delivers limited DC current to a workpiece without substantial reduction in applied voltage. The DC current is limited by utilizing a tungsten member in series between the battery and an arcing electrode. There is specifically disclosed a TIG welder embodiment.

Abstract: A boat platform ladder attaches at one end to the stern of a vessel and can be raised and lowered between stored and in use positions. A ladder is rotatably mounted to the opposite end of the platform. When the platform is lowered, locking mechanism fix the ladder in a perpendicular orientation relative to the platform. When the platform is raised, the ladder is unlocked so as to rotate into a parallel orientation relative to the platform.