Patents by Inventor Hans E. Karreman

Hans E. Karreman 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: 4789134
    Abstract: A forcible entry tool apparatus is provided for use by firemen and the like for forcible entry into vehicles or structures to assist in rescue operations. The tool has a base with a prying foot movably attached to the base with a pin acting as a fulcrum point for movement of the prying foot. The handle is attached to the prying foot for moving the prying foot on the lever pin on the base and a stabilizing arm is removably attachable to the foot for bracing the foot while the handle is being operated to move the prying foot on the fulcrum pin. Both the handle and the stabilizing arm are telescoping members. The stabilizing arm has a bracing foot attached to one end and is attached to the base with a positioning bracket. The prying foot can have the fulcrum pin positioned at different points for different operations and the handle can be positioned in different positions relative to the foot for proper leverage for prying open doors and the like.
    Type: Grant
    Filed: July 24, 1987
    Date of Patent: December 6, 1988
    Inventors: John B. Tenuto, Jr., Robert R. Hodge, Arthur V. Williams, Hans E. Karreman