Patents by Inventor Wolf Chitis

Wolf Chitis 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).

  • Process for providing a foundation pile for alternating compressive and tractive stresses and a pile thus provided
    Patent number: 4060994
    Abstract: The invention is related to a process according to which at the end of reinforcement bars inserted in a pile a nearly cylindrical and elongated chamber is inserted in the ground, said chamber having rigid impervious walls as to the fluids tending to enter from the outside, while when injecting cement grout into said chamber through appropriate tubes, the side walls will break and allow for grout expansion into the ground. The injection operation can be repeated for several times after as many scavengings or washings of the chamber.
    Type: Grant
    Filed: November 5, 1976
    Date of Patent: December 6, 1977
    Assignee: Fondedile S.p.A.
    Inventor: Wolf Chitis