Patents by Inventor Masanori Shima

Masanori Shima 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).

  • Method of hardening soft ground
    Patent number: 4566825
    Abstract: The present invention provides a method of improving soft ground.In this method, slurry formed by a mixture of cement-based hardener and water is supplied to the soft ground under pressure and is mixed with soft soil thereby to harden the same. Then, at least when a ground improvement machine having mixing propellers is penetrated into the above-mentioned soft soil, the cement-based hardening slurry is discharged from the mixing propellers.Further, in another method of improving soft ground according to the present invention, slurry formed by a mixture of cement-based hardener and water is supplied to the soft ground under pressure and is mixed with soft soil. Then, when deep and short walls, both consisting of mixed layer of the cement-based hardening slurry and the soft soil are formed one after the other, a plurality of deep walls are formed at a distance therebetween and then the short walls are jointly formed between a plurality of these deep walls.
    Type: Grant
    Filed: January 25, 1985
    Date of Patent: January 28, 1986
    Assignee: Toa Harbor Works Co., Ltd.
    Inventors: Yoshihisa Hirai, Masanori Shima, Hirohiko Aoki