Patents by Inventor Martinus H. E. Jansen

Martinus H. E. Jansen 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).

  • Cathode ray tube having a deflection unit
    Patent number: 6424085
    Abstract: A deflection unit of a cathode ray tube is provided with a cooling fan. The fan includes means for reducing the disturbing effect of the electric field generated by the fan on the deflection of the electrons, or the fan is arranged in such a manner that the disturbing effect is small.
    Type: Grant
    Filed: July 20, 1999
    Date of Patent: July 23, 2002
    Assignee: U.S. Philips Corporation
    Inventors: Martinus H. E. Jansen, Lucius T. Vinkenvleugel, Leopold C. M. Beirens
  • CRT deflection unit having a cooling fin
    Patent number: 6215239
    Abstract: A cathode ray tube includes a deflection unit (11) having a cooling fin (25) which is attached to the surface of a tapering surface on a yoke ring (23) by lugs (27). At least one of the lugs has a free end extending axially and outwardly in thermal contact with the tapering surface, and at least another of the lugs has a free end extending axially in an opposite direction and inwardly in thermal contact with the tapering surface.
    Type: Grant
    Filed: September 8, 1999
    Date of Patent: April 10, 2001
    Assignee: U.S. Philips Corporation
    Inventors: Martinus H. E. Jansen, Arnoldus M. C. Kieboom