Patents by Inventor Hendrik van Engelenburg

Hendrik van Engelenburg 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).

  • Method and apparatus for testing balls with the use of eddy currents
    Patent number: 5008623
    Abstract: Method, according to the eddy current method, for checking damage on the surface of round, e.g., ball-shaped, metal objects, whereby a similar object is supported and made to rotate around at least one axis while an electronic contact-free scanner or sensor is aimed at the surface of the object, characterized by the fact that the round object is placed on a fixed support and a gaseous medium, e.g., air is blown against the object in such manner that between the support and the object a gas or air layer is formed which carries the object, and the object is made to rotate by the gas or air flow.
    Type: Grant
    Filed: March 19, 1990
    Date of Patent: April 16, 1991
    Assignee: SKF Industrial Trading and Development Company BV
    Inventors: Hendrik Dolfsma, Hendrik van Engelenburg