Patents by Inventor Anthonius B. P. Vogels

Anthonius B. P. Vogels 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: 4783611
    Abstract: The high-pressure gas discharge lamp according to the invention has at least one electrode comprising an electrode rod and a helical winding near its tip projecting into the lamp vessel, both mainly of tungsten. The winding has a first layer of turns directly around the rod with locally a turn of high pitch P. The winding has around the first layer another layer of turns which is wound in opposite direction and has a turn of high pitch gripping around the turn of high pitch of the first layer forming therewith contact areas located diametrically opposite to each other. Between the contact areas high pitched turn of the outer layer engages the rod with a clamping fit. An additional turn of the second layer wound in the same direction as the first layer is disposed over the high pitched turns of the second layer in the region where the high pitched turn of the second layer engages the electrode rod. The winding has the same diameter over its entire length and is fixed firmly to the electrode rod.
    Type: Grant
    Filed: December 2, 1987
    Date of Patent: November 8, 1988
    Assignee: U.S. Philips Corp.
    Inventors: Anthonius B. P. Vogels, Peter L. F. J. Marks