Patents Assigned to S.E.F.I. Sondages-Etanchements-Forages-Injections
  • Support and foundation composite pile for various works and method for manufacturing the same
    Patent number: 3946570
    Abstract: The pile comprises a strainer tube connected through a sealing grout to a reinforcement part inside said tube which is held in the surrounding ground by injections of an anchorage grout and by injections of a tightening grout.
    Type: Grant
    Filed: September 27, 1974
    Date of Patent: March 30, 1976
    Assignee: S.E.F.I. Sondages-Etanchements-Forages-Injections
    Inventor: Pierre Henry Freydier