Patents by Inventor Bernt Klostermark

Bernt Klostermark 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).

  • High-frequency transformer
    Patent number: 4207544
    Abstract: A high frequency transformer for a wide range of frequencies and of the kind comprising a winding means attached on a core means, the winding means consisting of two parallel conductors isolated from each other, of which conductors one constitutes a primary winding, and the winding formed of the two conductors connected in series constitutes a secondary winding in a transformer coupled by economy coupling with a transforming ratio of 1:2. The conductors are wound on two parallel cores of soft magnetic materials spaced apart and connected by yokes at both ends. The winding pattern between cores lies in figure 8 patterns with opposite coils of the 8 patterns on each of the two cores.
    Type: Grant
    Filed: March 7, 1978
    Date of Patent: June 10, 1980
    Inventor: Bernt Klostermark
  • Personal use device for removing tartar from the inner side of teeth
    Patent number: 4164814
    Abstract: A personal dental care device including a dentist mirror and a flat, stiff tooth scraper projecting substantially perpendicular to the mirror, located at the edge of the mirror and either fixed on the mirror frame or rotatably positionable around the periphery of the mirror. There are several embodiments for mounting the tooth scraper adjacent the mirror.
    Type: Grant
    Filed: July 28, 1977
    Date of Patent: August 21, 1979
    Inventor: Bernt Klostermark