Patents by Inventor Mituo Hara

Mituo Hara 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).

  • Agitating blade structure of soil stabilizing apparatus
    Patent number: 4792237
    Abstract: An agitating and cutting blade structure of soil apparatus substantially comprises a plurality of concentric rotary shafts which rotate in mutually opposite directions and a plurality of agitating blades which are fixedly mounted on the respective rotary shafts and rotate in opposite directions corresponding to the rotation of the rotary shafts as well as a cutting blade fixed to the free end of one of the rotary shafts. Due to such construction, the soil receives a complicated and strong shearing force, is vigorously agitated and mixed with hardening agent efficiently hardened.
    Type: Grant
    Filed: December 5, 1986
    Date of Patent: December 20, 1988
    Inventor: Mituo Hara