Patents by Inventor Kalevi Kokkila

Kalevi Kokkila 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).

  • Apparatus for changing axle loads of a crane vehicle combination
    Patent number: 4154316
    Abstract: A load changing apparatus decreases the load on a supporting trailer and increases the load on the axles of main drive vehicle of a crane when desired. The crane's hydraulic system includes a two position valve which cuts off the flow of hydraulic fluid from a crane position controlling valve and directs fluid from a pump to the crane arm lifting cylinder. Limit switches or pressure sensitive valves can be used to limit the amount of movement which is caused by the fluid from the pump.
    Type: Grant
    Filed: April 5, 1977
    Date of Patent: May 15, 1979
    Assignee: Rauma-Repola Oy
    Inventors: Kalevi Kokkila, Visa Luukkonen
  • Seat for work machine or vehicle
    Patent number: 4057213
    Abstract: A seat for a work machine or vehicle is mounted to be laterally pivotable about an axis parallel to the longitudinal axis of the machine to permit the seat to accommodate to uneven terrain. Springs and shock absorbers are provided to absorb the shock of sudden changes in angular position. By restricting the seat to a lateral swinging motion, the driver maintains full control of steering and operation of foot pedals.
    Type: Grant
    Filed: January 19, 1976
    Date of Patent: November 8, 1977
    Assignee: Rauma-Repola Oy
    Inventor: Kalevi Kokkila