Patents Assigned to Alpina S.p.A.
  • Precast element for the construction of trenched structures and the process related thereto
    Patent number: 4073148
    Abstract: Structures are installed below grade by trenched construction. Precast wall elements, having a generally rectangular-shaped wall with at least one of its faces having essentially vertically-oriented parallel ribs, are placed in mud-filled trenches. Liquid concrete is then poured between the ribs to provide a foundation and to secure the wall element to the ground.
    Type: Grant
    Filed: November 12, 1975
    Date of Patent: February 14, 1978
    Assignee: Alpina S.p.A.
    Inventor: Luigi Zaretti