Device for eliminating residual unbalance from a rotating element

In a device comprising a stationary central shaft, having a cylindrical outer bearing surface, and a rotary element rotatably mounted co-axially with said shaft by a bearing means on said cylindrical outer bearing surface of said stationary central shaft, residual unbalance eliminating means comprising:

• a plurality of arcuate balancing chambers in said rotary element regularly coaxially distributed about the axis of rotation of said rotary element;
• a plurality of corresponding annular channels in said cylindrical outer bearing surface of said stationary central shaft;
• a plurality of radial holes in said rotary element each communicating respectively between one of said arcuate balancing chambers and one of said corresponding annular channels;
• a plurality of corresponding longitudinal ducts in said stationary central shaft each communicating respectively with one of said corresponding annular channels;
• a source of oil under pressure;
• an oil-supplying chamber in said stationary central shaft communicating with said source of oil;
• an oil chamber in said stationary central shaft communicating with said longitudinal ducts;
• a first calibrated constriction means in said stationary central shaft between said oil-supplying chamber and said oil chamber;
• a source of compressed air;
• a compressed air chamber in said stationary central shaft communicating with said source of compressed air;
• a plurality of regulating pintles with inlets and outlets in said stationary central shaft, said inlets of said pintles communicating with said compressed air chamber and each of said outlets of said pintles communicating respectively with one of said corresponding longitudinal ducts;
• a plurality of second constriction means in said rotary element each having inlet and outlet means, said inlet means of each of said second constriction means communicating respectively with one of said arcuate balancing chambers;
• and
• an oil and compressed air leakage escape means in said rotary element and said stationary central shaft communicating with said outlets of said second constriction means and having an outlet from said stationary central shaft.