Patents Assigned to Toto Electric Industry Co.
  • Control apparatus for mortar compounding apparatus
    Patent number: 4091462
    Abstract: In a mortar compounding apparatus wherein water, cement, aggregate and sand are admitted into a mixing tank at a predetermined ratio and admixed to form mortar, there is provided a control apparatus including detection blades rotated by a constant torque motor via a spring in the mixing tank or a detection tank connected thereto. The load imposed on the detection blades by the mortar is detected by a potentiometer for controlling the amount of water or solid constituents admitted into the mixing tank.
    Type: Grant
    Filed: September 7, 1976
    Date of Patent: May 23, 1978
    Assignees: Toto Electric Industry Co., Japanese National Railway
    Inventors: Isaburo Igarashi, Kazuriki Iizuka, Hiroshi Otsuka