Patents by Inventor Arne Sandvold

Arne Sandvold 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: 6527629
    Abstract: An apparatus for rounding off edges of openings in a work piece, such as internal openings or cut outs in steel plates. The apparatus includes a belt grinding machine having a continuous grinding belt running over several belt guiding rollers which are provided on a support frame. Two of the rollers are provided on a cradle, that is pivotally supported in the support frame. The grinding belt is, between the rollers on the cradle, disposed for rectilinear working of the work piece, and a device is arranged for operating the cradle in a pendulum like movement about the pivotal support during a grinding operation.
    Type: Grant
    Filed: October 12, 2000
    Date of Patent: March 4, 2003
    Assignee: Grobi AS
    Inventor: Arne Sandvold
  • Patent number: 5762542
    Abstract: An edge grinding device for rounding off edges of members which are passed through the grinding device. The device includes a main frame for supporting the structural member, and a grinding aggregate which is pivotably mounted on the frame about an axis running substantially parallel to the directional motion of the member, the grinding aggregate having a grinding element which has a convex grinding surface, wherein the grinding aggregate pivots the convex grinding surface about the edge which is to be round while the member is moving through the device.
    Type: Grant
    Filed: June 5, 1996
    Date of Patent: June 9, 1998
    Assignee: Grobi A/S
    Inventor: Arne Sandvold