In 1920, Serbian-born inventor Nikola Tesla designed and patented what he called a "valvular conduit": a pipe whose internal design ensures that a fluid will flow in one preferred direction, with no ...
Triple-tandem lifts raise a 10,000-lb load 12 ft with better than a 3:1 safety factor. Six hydraulic cylinders fitted with chrome-plated shafts (prevents corrosion) move the load. A flow divider ...
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