Patents by Inventor Mikhail Maiorovich Usachev

Mikhail Maiorovich Usachev has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Dual duty drive with induction motor
    Patent number: 3940668
    Abstract: A dual duty drive for an actuating mechanism, for example a pump or a fan, incorporating an induction motor and an electromechanical reduction gear unit. The economical and reliable operation in the rated duty is ensured by delta connecting the motor windings, and with current being applied across the field winding of the electro-mechanical reduction gear unit, the latter is caused to operate with a gear ratio close to unity. Under a fractional load duty, the motor windings are star connected and the electro-mechanical reduction gear unit is deenergized, causing the latter to operate in the step-down reduction mode.
    Type: Grant
    Filed: August 16, 1973
    Date of Patent: February 24, 1976
    Inventors: Voldemar Voldemarovich Apsit, Alexei Petrovich Ustinsky, Vladislav Alexandrovich Pugachev, Mikhail Maiorovich Usachev