Patents by Inventor O. R. Shumaker

O. R. Shumaker 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: 4609303
    Abstract: Device for slip forming concrete pathways such as golf cart paths, driveways, sidewalks and the like. A concrete slip form is continuously moved forward to form concrete aggregate into a smooth, uniform member, and comprises a mold member having an open end for receiving the concrete aggregate and a lower end for discharging the aggregate; means for moving the mold member to effect the discharge of the concrete member; means for forming and contouring the ground surface prior to pouring the aggregate; and means for compacting and smoothing the concrete aggregate prior to discharge from the mold.
    Type: Grant
    Filed: August 28, 1984
    Date of Patent: September 2, 1986
    Inventor: O. R. Shumaker