Patents Assigned to William K. Hilfiker
  • Patent number: 5749680
    Abstract: A soil reinforced retaining wall includes a soil reinforcing mat connected to a face panel. The face panel is vertically disposed with a back facing the earthen formation and is preformed to include an anchor embedded in the face panel and extending from the back in at least one predetermined location. The soil reinforcing mats are horizontally disposed within the earthen formation in general correspondence with the predetermined location. The mats have an end adjacent the face panel folded to form substantially a right angle portion of the mat including a vertical face and a horizontal face. A right angle member having a vertical face and a horizontal face is disposed in contact with the corresponding vertical face and horizontal face of the right angle portion of the mat. The right angle member is then secured to the anchor such that the right angle portion of the mat is rigidly held therebetween.
    Type: Grant
    Filed: November 5, 1996
    Date of Patent: May 12, 1998
    Assignee: William K. Hilfiker
    Inventors: William K. Hilfiker, Thomas P. Taylor
  • Patent number: 5733072
    Abstract: A wire mat for a retaining wall structure has a unique prong portion extending upwardly from a vertical face. The prong portion has a series of bends in its middle that extend over a lower portion of a similar wire mat located immediately above such that the series of bends interleaves with longitudinal members of the wire mat above. In a preferred embodiment one or more connecting pins are inserted between the prong portion and the longitudinal members of the mat above.
    Type: Grant
    Filed: July 31, 1996
    Date of Patent: March 31, 1998
    Assignee: William K. Hilfiker
    Inventors: William K. Hilfiker, Thomas P. Taylor