Patents by Inventor Elke Ratzokwski

Elke Ratzokwski 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).

  • Joint movable in all directions, especially for linkages and Cardan shafts
    Patent number: 5073145
    Abstract: A joint movable in all directions for linkages and Cardan shafts. The joint includes only two parts of identical design made from an elastically deformable plastic, wherein the coupling members of identical design are fitted into each other at a 90.degree. angle while elastic deformation takes place.
    Type: Grant
    Filed: December 26, 1989
    Date of Patent: December 17, 1991
    Assignee: Lemforder Metallwaren AG
    Inventors: Elke Ratzokwski, Keit Wagener