Patents by Inventor Horst Brettschneider

Horst Brettschneider 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).

  • X-ray tube
    Patent number: 5259014
    Abstract: An X-ray tube has a focal spot which can be varied in respect of position or size. A cathode has dimensions adapted to the variation of the focal spot, and between the cathode and the anode of the X-ray tube there is a grid arrangement which comprises a number of grid elements in one plane, which elements are electrically insulated from one another, and whose potential is independently controlled.
    Type: Grant
    Filed: December 12, 1991
    Date of Patent: November 2, 1993
    Assignee: U.S. Philips Corp.
    Inventor: Horst Brettschneider
  • X-ray tube comprising an at least partly metal housing and an electrode which carries a positive high voltage with respect thereto
    Patent number: 4618977
    Abstract: In an X-ray tube comprising a metal housing portion and an electrode which can be connected to a positive high voltage with respect thereto and which is mounted on a ceramic insulator portion, a conical insulator portion is enclosed by a wall portion, at least the inner surface of which has an insulating effect. A screening sleeve which electrically screens the connection between the insulator portion and the electrode projects into a recess in the wall portion.
    Type: Grant
    Filed: December 9, 1985
    Date of Patent: October 21, 1986
    Assignee: U.S. Philips Corporation
    Inventors: Horst Brettschneider, Walter Hartl, Diethard Peter
  • X-Ray tube having flashover prevention means
    Patent number: 4499592
    Abstract: In high-voltage vacuum-tubes, specifically X-ray tubes, comprising an electrode (anode) which carries a positive high voltage and which is connected to a conductive part (for example the metal tube envelope) via an insulator, flashover may occur at very high temperatures. In order to preclude such flashover a shielding electrode is arranged at a small distance from the insulator and has such a shape that the electric field strength at the location where the insulator is connected to the conductive part is reduced.
    Type: Grant
    Filed: April 19, 1982
    Date of Patent: February 12, 1985
    Assignee: U.S. Philips Corporation
    Inventors: Horst Brettschneider, Walter Hartl