Patents Assigned to Zniitmash
  • Automatic machine for magnetic abrasive polishing of internal rotational surfaces
    Patent number: 4030249
    Abstract: An automatic machine for magnetic abrasive polishing of internal rotational surfaces and especially internal race-ways of anti-friction bearings through a rotating magnetic indicator and ferromagnetic powder including a rotating charging device connected to a rotating table and adapted to follow various working positions, with chucks located on the table for chucking the work pieces and including independent rotation and electromagnetic heads as well as a removing device rotating synchronously with the charging device.
    Type: Grant
    Filed: October 2, 1975
    Date of Patent: June 21, 1977
    Assignee: Zniitmash
    Inventors: Atanas Dimitrov Kochemidov, Boris Georgiev Makedonski, Ivan Minkov Dumanov, Stefan Georgiev Payakov, Peter Konstantinov Galabov, Haralampi Aangelov Atanassov