Patents by Inventor Elek Demeter

Elek Demeter 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).

  • Brake-motor
    Patent number: 4477743
    Abstract: The invention refers to a brake electrical asynchronous motor with short-circuit rotor and double drive, where its own magnetic field simultaneously generates both the revolving field on the rotor, and the electromagnetic force for deblocking the brake.
    Type: Grant
    Filed: June 3, 1982
    Date of Patent: October 16, 1984
    Assignee: Institutul De Cercetare Stiintifica Si Inginerie Technologica Pentru Industria Electrotehnica
    Inventors: Constantin Apetrei, Victor Nitigus, Elek Demeter, Marian Radulescu, Toma Sachelarie