Patents by Inventor Tore A. Aronsson

Tore A. Aronsson 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).

  • Torque limiting arrangement in an I.C. engine
    Patent number: 4633832
    Abstract: In engine-powered machines (motor cutting saw, motor chain saw) with a centrifugal clutch a wearing on the clutch and belt takes place by a high load at an r.p.m. around or above the skidding r.p.m. of the centrifugal clutch. A step for reducing the said wearing can--according to the invention--be taken by limiting the driving torque of the engine in the above-said r.p.m. interval. The invention means that the cutting machine/motor saw is provided with electronic equipment counting r.p.m. and then controlling the ignition system so that the torque of the engine is lowered in a predetermined interval. In a cutting machine ignition is allowed in, for example, every third revolution within the interval 3000-6000 r.p.m. The working mode can also be widened so that the time difference between several revolutions is detected.
    Type: Grant
    Filed: February 18, 1986
    Date of Patent: January 6, 1987
    Assignee: AB Electrolux
    Inventors: Bo C. Andreasson, Jan O. Donnerdal, Tore A. Aronsson