Through the ages, Holland has been the home of many skilled mill builders, whose work can still be found all over the country. The design has been improved as long mills are being built. The name of Ten Have represents one of the many families of well known mill builders in Holland. The Ten Have flap, a braking device for the sails, was developed by Gerrit ten Have in the first half of the 20th century. These flaps are still being used today.
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In the FC design the hydrostatic forces do not cause any friction between the cup and piston, contrary to the situation in the slipper type and bent axis machines. Consequently the torque loss of the FC machine is very small and not dependent on the operating pressure. Because of the increased piston number the torque variation is very small and together with the small torque loss this guarantees an excellent start up behaviour. As the hydrostatic forces on each piston and subsequently also on the rotor are balanced, the load on the bearings is small. This means low bearing friction, low noise and low cost. Measurements on the latest prototypes by the Fluid Power Institute (IFAS) of the Technical University of Aachen prove the high efficiency and low torque loss of the Floating Cup concept. |
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