Patents by Inventor Rolf L. Rask

Rolf L. Rask 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).

  • Method of producing electrical coil units, particularly for ignition apparatus
    Patent number: 4747206
    Abstract: A method of winding coils in one and the same wire size, so that they can be tailored to prevailing circuit requirements, includes, for example, when a lower resistance is required, a partial winding is first wound in one direction from a first connection to a second connection, the wire then being wound from the second connection in the opposite direction for joining to the first connection.
    Type: Grant
    Filed: July 3, 1986
    Date of Patent: May 31, 1988
    Assignee: Aktiebolaget Svenska Elektromagneter
    Inventors: Nils A. Agren, Rolf L. Rask, Lars-Olof Ottosson