Patents by Inventor Per Ulf Torgny Quarfordt

Per Ulf Torgny Quarfordt 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: 6385871
    Abstract: At their lower edge (6) excavators are provided with a tooth arrangement consisting of two parts (1 and 2), one part (2) being attached to the bucket (6) and the other part (1) being exchangeable. The two parts (1 and 2) are held together by means of a male and female relationship and a transverse aperture (3 and 25) with a locking body (4). When the exchangeable part (1) becomes worn it may start to become unstable. The object of the present invention is to eliminate this drawback and this is achieved in that the locking body (4) comprises two opposing flat surfaces, provided with one or more spacers (15-20) intended to restrict approach of the two surfaces towards each other.
    Type: Grant
    Filed: June 28, 1999
    Date of Patent: May 14, 2002
    Assignee: Componenta Wear Parts AB
    Inventor: Per Ulf Torgny Quarfordt
  • Patent number: 5802752
    Abstract: An excavation tooth arrangement including a point adapter, a holder and a dowel. The ends of the point adapter and of the holder have male and female parts which are configured to be joined and held together by insertion of a dowel into a groove which includes a pocket. The dowel includes a part which snaps into this pocket and thus remains in a desired position.
    Type: Grant
    Filed: September 16, 1996
    Date of Patent: September 8, 1998
    Assignee: Componenta Wear Parts AB
    Inventor: Per Ulf Torgny Quarfordt