COMMUTATOR MACHINE Russian patent published in 2000 - IPC

FIELD: electromechanical engineering. SUBSTANCE: machine shaft 10 mounts commutator whose plastic casing 9 accommodates segments 1 with planar rolls in-between; the latter are assembled of three parallel folded metal- foil strips 2, 3, 4 separated by high-dielectric-constant insulation 5 and folded many times into planar roll; one extreme strip 2 contacts one side surface of segment 1 through its non-insulated end; other extreme strip 4 contacts side surface of adjacent segment 1 through its non-insulated and elongated end 6 placed around roll; Intermediate strip 3 placed inside planar roll contacts upper part of U-shaped metal plate 7 through its starting non- insulated portion; end portions of plate 7 contact shaft 10. Cavities formed between each segment 1 and grounded shaft 10 are uniformly arranged over commutator and function to facilitate operation of running-over edge of brush contact. EFFECT: reduced arcing and electromagnetic radiation which improves reliability, service life, and radio interference of machine. 2 dwg