Patents by Inventor Effraim Ben-Dor

Effraim Ben-Dor 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).

  • Roller skate
    Patent number: 4273345
    Abstract: Roller skates which utilize a single row of narrow wheels to support each skate include housings in a blade-like support for the skate wheels. A friction plate or bar is disposed along the side of the support and is dragged along the skating surface to stop movement of the skate. A plasticly deformable pivot is mounted at each end of the blade-like support to permit spinning movement thereon.
    Type: Grant
    Filed: October 2, 1978
    Date of Patent: June 16, 1981
    Inventors: Effraim Ben-Dor, Jerome H. Lemelson