Patents by Inventor Leif T. Hansson

Leif T. Hansson 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).

  • Charging regulator
    Patent number: 4614905
    Abstract: An autonomous regulator for regulating the charging current to the individual cells in a battery. The regulator shunts the portion of the trickle current which constitutes an excess to the charging current. There is thus provided an optimum charge for each cell, independent of differences in self-discharge of the different cells. The size of the shunted current is determined by the difference between the cell pole voltage and a reference voltage generated in the regulator.
    Type: Grant
    Filed: May 18, 1984
    Date of Patent: September 30, 1986
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventors: Bo A. O. Petersson, Leif T. Hansson, Per-Edward Samsioe