Patents by Inventor Paul M. McKinnon

Paul M. McKinnon 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).

  • Curb forming and extruding apparatus
    Patent number: 5354189
    Abstract: A manually operable and steerable curb extrusion device for extruding curb, barrier, wall, gutter or the like from concrete, cement or some other moldable building material. The curb extrusion device has a segmented vibrating hopper into which building materials are placed to fall onto two tapered counter rotating vibrating augers which compact and force the building material through an extrusion mold where it is shaped before extrusion.
    Type: Grant
    Filed: December 30, 1992
    Date of Patent: October 11, 1994
    Inventor: Paul M. McKinnon