Abstract: The present disclosure is directed to a trailer stand for a semi-trailer comprising a frame having a front end, a back end, the front end having a pair of front legs and the back end having a pair of back legs; a wheel assembly having a wheel assembly frame, the wheel assembly frame comprising at least two wheels; a pair of stepped assemblies, each of the pair of stepped assemblies connected to the top of one of the pair of front legs and one of the pair of back legs, the pair of stepped assemblies providing a plurality of landing areas for an underside of the semi-trailer; and a lifting system connected to the wheel assembly and to the frame, the lifting system configured to raise and lower the frame relative to the wheel assembly.

Abstract: A portable tabletop assembly includes a horizontal tabletop, first and second pairs of legs for supporting the tabletop on a horizontal surface, a first crossbeam, and a height lock. Each pair of legs includes a first leg and a second leg pivotably connected to one another. Each leg has a first leg end, and a second leg end slidably coupled to the tabletop. The first crossbeam connects the first leg of the first pair of legs to the first leg of the second pair of legs. The height lock is engageable at infinite positions between raised and storage positions to inhibit horizontal sliding of the first crossbeam and the second leg ends of the first legs to fix a height of the tabletop above the horizontal surface. A method of adjusting the height of a portable tabletop assembly is also disclosed.

Abstract: A portable tabletop assembly includes a horizontal tabletop, first and second pairs of legs for supporting the tabletop on a horizontal surface, a first crossbeam, and a height lock. Each pair of legs includes a first leg and a second leg pivotably connected to one another. Each leg has a first leg end, and a second leg end slidably coupled to the tabletop. The first crossbeam connects the first leg of the first pair of legs to the first leg of the second pair of legs. The height lock is engageable at infinite positions between raised and storage positions to inhibit horizontal sliding of the first crossbeam and the second leg ends of the first legs to fix a height of the tabletop above the horizontal surface. A method of adjusting the height of a portable tabletop assembly is also disclosed.

Abstract: An apparatus for irradiation of a fluid with UV light includes a tubular body consisting of UV-permeable material. The body includes a fluid chamber and openings for passage of fluid. A UV source is provided to subject the chamber to the UV light. A wiper is centrally supported in the body to clean the inner surface of the body. Light baffles define an irradiated section of the chamber to prevent light penetration beyond the irradiated section while permitting the fluid to flow through. The apparatus is provided as a component in a housing having a modular design. The modules include a back cover for surface mounting. The body is mounted to the back cover. An inner cover is attached to the back cover. The inner cover includes the UV source and modular electronics. A front cover is attached to the inner and back cover.