At the age of ten, Earl Silas Tupper (1907-1983) initiated the door-to-door selling of the produce of his parents. Later he learned the manufacturing and designing of plastic. Tupper developed a method for purifying black polyethylene, a waste product produced in oil refinement. This became the basis for the colourful plastic 'tupperware'. He also invented the Tupper seal, an airtight lid for containers. This new system required demonstration, which eventually lead to the direct home-selling system, known as the Tupperware party.
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Comparison of the weight of the FC pump with conventional slipper type and bent axis type pumps shows interesting differences. Especially in larger displacement volumes, the Floating Cup pump has a much higher power to weight ratio. The larger the displacement volume of the pump or motor gets, the lower the mass of the FC principle will be in comparison with bent axis or slipper type machines. The weight of an average 125 cc Floating Cup pump is 28% less than a 128 cc state of the art bent axis. Compared with a slipper type pump the weight of the FC is 62% less. |
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