Patents by Inventor Lars-Eric Jacobsson

Lars-Eric Jacobsson 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).

  • Patent number: 4058169
    Abstract: A plow/harrow combination comprising a harrow member extending sidewardly from a plow blade, the harrow teeth having an elongated cross section with the cross-sectional length axis inclined in relationship to the direction of travel, thus creating a compensating force on the plow blade, the combination also including a release and reset mechanism, which, when the harrow member is obstructed by an object creating a load exceeding a predetermined level, causes the release of the harrow member from the original position and a pivoting movement of same in a substantially horizontal plane, the harrow member being automatically returned to the original position as soon as the load on the harrow member no longer exceeds the predetermined load.
    Type: Grant
    Filed: February 13, 1976
    Date of Patent: November 15, 1977
    Inventor: Lars-Eric Jacobsson