Patents by Inventor Rafael U. Borda

Rafael U. Borda 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).

  • Combination key
    Patent number: 4662200
    Abstract: A combination key includes a hollow head, a hollow stem connected to the head and a plurality of teeth mounted on racks longitudinally movable in the head and stem. The racks are in meshed engagement with toothed control wheels which are mounted in the head and emerge partially to the outside. The control wheels are located in the head next adjacent the stem. The length of the head is at least equal to the length of the stem so that the racks can be accommodated in the head when the teeth are in a position of maximum retraction.
    Type: Grant
    Filed: September 5, 1985
    Date of Patent: May 5, 1987
    Inventor: Rafael U. Borda