Patents by Inventor Hans U. Krieger

Hans U. Krieger 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).

  • Transformer comprising a magnetic screen
    Patent number: 4749979
    Abstract: In a transformer (1) comprising an E-I laminated core (2) with transformer windings (7) wound around the central limb (5), at least two metal-strip loops (10, 11) are provided for magnetic screening. The magnetic strips (10,11) extend around the corners (12) of the laminated core (2) at an as constant as possible distance from one another and perpendicularly to the lamination direction of the laminated core (2) and are welded (17) to the laminated core (2) at side areas where the magnetic field strength is low.
    Type: Grant
    Filed: August 17, 1987
    Date of Patent: June 7, 1988
    Assignee: U.S. Philips Corporation
    Inventor: Hans U. Krieger