Patents by Inventor Eloy da Silva Antunes

Eloy da Silva Antunes 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).

  • Patent number: 4941555
    Abstract: An electric monorail conveyor wherein the vehicles are suspended from and advance along an elongated guide rail. The electric motor of each vehicle receives current from a third rail which is adjacent the guide rail and includes first sections alternating with second sections at locations where the vehicles are to be brought to a halt. The second sections are galvanically separated from the first sections and receive low-frequency current from a frequency converter which can reduce the frequency when the motor of a vehicle is electrically connected with a second section. This renders it possible to arrest the vehicles in predetermined positions with a tolerance of not more than .+-.2 mm.
    Type: Grant
    Filed: July 22, 1988
    Date of Patent: July 17, 1990
    Assignee: Seiwert Stahl- und Apparatebau GmbH
    Inventor: Eloy da Silva Antunes