Abstract: A double wall coaxial piping system with enhanced strength designed to transport a medium underground and minimize leaks is provided. The double wall coaxial piping system includes a plurality of pipe assemblies connected together to form a constructed pipe assembly with a first end and a second end. Each pipe assembly has an outer pipe and an inner pipe secured within the outer pipe. The inner pipe of each pipe assembly is continuously connected to the inner pipe of an adjacent pipe assembly in the plurality of pipe assemblies. Each end in the first and second ends of the constructed pipe assembly has a pair of plates coupled to the outer pipe of the pipe assembly at the end of the constructed pipe assembly and a packing layer disposed between the pair of plates.

Abstract: A vending machine is disclosed which may include a level sensor to ensure proper positioning of the vending machine, and which can be used in an anti-theft alert scheme. The machine may also include an XY mechanism having an X-axis motor in a product area and a Y-axis motor in a transaction area. The machine may also include individually lockable doors between the product area and a delivery bin and between the delivery bin and the outside of the machine. The machine may also include quick release racks, trays and gates for easy removal and replacement. The machine may also include a controller which allows programming of product size or product price by rack or column. The machine may also include a refrigeration cassette which can be quickly removed and replaced. The machine may also include anti-theft legs or an anti-theft underside mechanism.

Abstract: A vending machine is disclosed which may include a level sensor to ensure proper positioning of the vending machine, and which can be used in an anti-theft alert scheme. The machine may also include an XY mechanism having an X-axis motor in a product area and a Y-axis motor in a transaction area. The machine may also include individually lockable doors between the product area and a delivery bin and between the delivery bin and the outside of the machine. The machine may also include quick release racks, trays and gates for easy removal and replacement. The machine may also include a controller which allows programming of product size or product price by rack or column. The machine may also include a refrigeration cassette which can be quickly removed and replaced. The machine may also include anti-theft legs or an anti-theft underside mechanism.