Patents by Inventor Sophya G. Kostova

Sophya G. Kostova 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).

  • Car wheel made of polymer material
    Patent number: 4900097
    Abstract: A car wheel made of engineering polymer material, which consists of a rim in which there is shaped a well for the tire. The wheel is connected to a disc provided with holes for the fixing components. Between the wheel disc and the car hub there is inserted a heat insulating plate. In the zone of each hole for the fixing components there is provided a plurality of axially, uniformly arranged pins made of a steel with a high limit of elasticity, the faces of which are in contact with supporting plates, disposed on both sides of the disc, and the coefficient of linear expansion of the pins is equal to that of the fixing components.
    Type: Grant
    Filed: August 23, 1988
    Date of Patent: February 13, 1990
    Assignee: Technologitchen Center "IPOMA"
    Inventors: Georgi D. Kostov, Bogoya G. Gargov, Chavdar L. Gitchev, Sophya G. Kostova