Patents by Inventor Louw Kriel

Louw Kriel 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).

  • Ground-engaging tool for an excavation bucket
    Patent number: 6457269
    Abstract: The invention relates to a ground-engaging tool which is connected or connectable to a lip on an excavation bucket. The ground-engaging tool includes a tool body which is formed from a material having a hardness of approximately 40 Rockwell C hardness and which defines a contact surface at one end for receiving impacts in use. Extending through a substantial portion of the tool body from the contact surface is a hardened core formed from a material having a hardness which is at least 20% greater than the hardness of the material of the tool body for transferring impacts through the tool body.
    Type: Grant
    Filed: June 14, 2000
    Date of Patent: October 1, 2002
    Assignee: Caterpillar Sarl
    Inventors: Schalk Willem Petrus Esterhuyse, Louw Kriel
  • Ground-engaging tool for an excavation bucket
    Patent number: D458614
    Type: Grant
    Filed: June 14, 2000
    Date of Patent: June 11, 2002
    Assignee: Caterpillar SARL
    Inventors: Schalk Willem Petrus Esterhuyse, Louw Kriel