Abstract: A trackless train with complementary steering couplings between axles and cars transmits steering forces from one axle to the next, in succession. Couplings couple axles of cars, as well as adjacent axles between adjacent cars. Each axle assembly may either pivot about a central bearing or include a pivoting steering arm for each wheel that pivots about a steering pin, with wheels on the inside of a turn pivoting more than wheels on the outside of a turn. Differentials may be provided to transfer power to each wheel, including from car to car.

Abstract: A method of, and system for, collecting and controlling hydrocarbons leaking from offshore sea bottom environments entail providing a concrete containment barrier and catenary gasket around the leak source, pumping concrete onto the catenary gasket, opening ports and valves in a containment vessel while it is positioned over the leak source, at least partially embedding the containment vessel in the pumped concrete, closing the ports and valves to capture leaking fluids, and communicating the fluids to the surface for further processing. The modular containment barrier may be placed around an existing or potential well site, or an operating well, abandoned well or sea bottom fissure to facilitate implementation of the method in the event of a leak.

Abstract: A method of, and system for, collecting and controlling hydrocarbons leaking from offshore sea bottom environments entail providing a concrete containment barrier around the leak source, pumping concrete, opening ports and valves in a containment vessel while it is positioned over the leak source, at least partially embedding a containment vessel in the pumped concrete, closing the ports and valves to capture leaking fluids, and communicating the fluids to the surface for further processing.