02 Tesla induction motor rotor patent
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The patented technology of the Tesla induction motor rotor is the same as that of the welded squirrel cage. The copper strip is inserted into the rotor slot. After the insertion, the effect is as follows:
The next step was supposed to be the welded end ring, and Tesla made another way to create a set of silver-plated copper wedges that were inserted into the gap between the ends of the copper strip so that a mechanically constructed end ring would Manufacturing is complete.
After the wedge is inserted, the welding is carried out between the wedge and the copper strip. This welding requirement is much lower than the induction brazing cost and difficulty of the end ring in the welding scheme. After welding, the ring is hung on both ends (the 107 parts in the figure below)
This patent completes the low-cost, high-efficiency copper core rotor manufacturing with a clever solution, and is one of Tesla's core technologies.
