Patents by Inventor Lars O. Jonsson

Lars O. Jonsson 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).

  • Motor saw brake
    Patent number: 4757881
    Abstract: A chain brake which is manually adjustable into a cocked position and releasable by means of stored electric energy and a trigger, includes a permanent magnet circuit in which a movable armature is a part of a latch which keeps the brake in the cocked position. The permanent magnet has a coil exerting a counter directional magnetic field to the permanent magnet when it passes current. The holding force on the latch decreases and the brake is released when current from a capacitor passes through the coil.
    Type: Grant
    Filed: May 5, 1986
    Date of Patent: July 19, 1988
    Assignee: Aktiebolaget Electrolux
    Inventors: Lars O. Jonsson, Hans I. Strom, Lars P. Skoglund