Patents by Inventor Olof Herolf

Olof Herolf 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: 5308216
    Abstract: A forwarder has an elongate rigid chassis with a cab at a forward end, a load carrier on the chassis, and a crane serving the load carrier. Four wheels at the front are mounted as a pair on each side, each pair on a common yoke to form a bogie. The bogies can pivot relative to the chassis for up and down movement of the wheels, but the wheels are non-steerable. A single wheel at each side at the rear of chassis is steerable, to provide steering of the forwarder. The cab, the operator, the load lifting device and the load carrier always have the same, fixed, orientation at all times.
    Type: Grant
    Filed: April 24, 1989
    Date of Patent: May 3, 1994
    Assignee: Osa AB
    Inventor: Olof Herolf
  • Patent number: 4984961
    Abstract: The invention relates to a method for handling and transporting logs from felling site to consumer, the logs being loaded at the felling site on a cross-country vehicle (1) which carries the logs to a landing where they are unloaded and loaded anew, viz. on a road vehicle which tranports the logs to the consumer. The logs loaded on the road vehicle (1) are bundled, preferably already at the felling site, by means of chains (17) to form a bundle of logs which is maintained intact or unbroken during reloading from the cross-country vehicle (1) to the road vehicle.
    Type: Grant
    Filed: March 23, 1989
    Date of Patent: January 15, 1991
    Assignee: OSA AB
    Inventor: Olof Herolf
  • Patent number: 4881865
    Abstract: A forest machine with a crane comprises a driver's cab (2) which is mounted on a wheeled chassis (1) and behind which a load carrier (3) is placed, and a crane post (10) mounted in association with the cab and rotatable relative to the chassis and carrying an outer boom (11) having a telescopic boom (16) which is arranged at its free end to carry a working tool (21). The crane post (10) comprises two suitably inclined, spaced-apart support arms (12) between which extends a pivot shaft (13) on which the outer boom is mounted in a position between the support arms. The pivot shaft (13) is located at a distance from the center of rotation of the post (10) exceeding half the distance between a pair of wheels carrying the chassis of the machine. The outer boom is movable through at least 90.degree. between a horizontal and a vertical position, more precisely by means of a hydraulic cylinder (19).
    Type: Grant
    Filed: April 7, 1988
    Date of Patent: November 21, 1989
    Assignee: OSA AB
    Inventor: Olof Herolf
  • Patent number: 4838328
    Abstract: The invention relates to a method for thinning a forest by means of a wheeled harvester and a wheeled forwarder comprising a driver's cab and a load carrier located behind the cab. The harvester (3) is caused to advance in existing forest stands (1) in routes optimally selectable with regard to the characteristics of the stand, between main haul roads or strip roads close to each other, and is parked on suitable places along the routes for felling trees on each parking place. The trees are limbed and placed underneath the harvester between the wheels thereof, and the forwarder (4) is caused to follow the harvester in the same route as this and take care of the tree stems placed underneath the harvester and left behind it. This is achieved in that the felled trees lying in front of the forwarder are lifted by it and moved over and rearwards past the cab of the forwarder to the load carrier situated behind the cab.
    Type: Grant
    Filed: August 25, 1987
    Date of Patent: June 13, 1989
    Assignee: OSA AB
    Inventor: Olof Herolf