Patents by Inventor Rolf V. T. Ewald

Rolf V. T. Ewald 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).

  • Patent number: 4872862
    Abstract: A display incorporating light-emitting diodes, comprising a reflector which is formed in a holder. A light-emitting diode is mounted in the holder and projects into the reflector through an opening. The light-emitting doide is attached in the opening with the diode walls snugly abutting against the edges of the opening. The invention also relates to a method of manufacturing the display comprising light-emitting diodes and an installation to perform the method. Each diode is provided with two connections protected by the holder. The holder consists of surface-treated sheet metal, preferably anodized aluminium. The reflector is bowl-shaped and semispherical. Owing to the reflector a bundle of aligned beams of light is emitted from the light-emitting diode.
    Type: Grant
    Filed: March 24, 1988
    Date of Patent: October 10, 1989
    Inventor: Rolf V. T. Ewald
  • Patent number: 4628422
    Abstract: A display incorporating light-emitting diodes, comprising a reflector which is formed in a holder. A light-emitting diode is mounted in the holder and projects into the reflector through an opening. The light-emitting diode is attached in the opening with the diode walls snugly abutting against the edges of the opening. The invention also relates to a method of manufacturing the display comprising light-emitting diodes and an installation to perform the method. Each diode is provided with two connections protected by the holder. The holder consists of surface-treated sheet metal, preferably anodized aluminum. The reflector is bowl-shaped and semispherical. Owing to the reflector a bundle of aligned beams of light is emitted from the light-emitting diode.
    Type: Grant
    Filed: May 22, 1984
    Date of Patent: December 9, 1986
    Assignee: Integrerad Teknik HB
    Inventor: Rolf V. T. Ewald