Patents by Inventor Ugo Piccagli

Ugo Piccagli 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 of forming a continuous wall in the ground
    Patent number: 4453366
    Abstract: A method of constructing an impermeable wall in the ground is disclosed. The method utilizes prefabricated panels and does not require the same thickness of wall as normally has to be cast in a trench.
    Type: Grant
    Filed: March 3, 1983
    Date of Patent: June 12, 1984
    Inventor: Ugo Piccagli
  • Impermeable wall construction
    Patent number: 4193716
    Abstract: A method of constructing an impermeable wall in the ground having no joints is disclosed. The method overcomes the problems of forming an impermeable joint between a series of individually dug slots. The improvement includes excavating at least one portion of trench in the ground at a width and depth required for the wall, replacing excavated material from the trench with bentonite-water slurry, and after completing the excavation, replacing a predetermined amount of the bentonite-water slurry with cement. The cement is mixed with the remaining bentonite-water slurry in the one portion of trench to produce an evenly mixed cement-bentonite-water slurry. After this slurry has gelled, the above steps are repeated on adjacent portions of trench, and the completed trench then allowed to harden and form a single impermeable wall.
    Type: Grant
    Filed: January 13, 1978
    Date of Patent: March 18, 1980
    Inventor: Ugo Piccagli