Patents Assigned to Sanjo Seiki Co., Ltd.
  • Patent number: 7387509
    Abstract: An injection molding machine includes an injection pot with an injection nozzle and a side casting port for feeding a material into the pot. The tip part of a plunger disposed in the pot is formed in such as shape that the tip part of the injection pot can be generally filled with the material after an injection is completed. A fitting part pressingly cuts off the material from the feeder by allowing a boundary part between the plunger body and its tip to be formed at a corresponding part between the injection pot body and its tip part.
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: June 17, 2008
    Assignee: Sanjo Seiki Co., Ltd.
    Inventor: Toshimichi Nishizawa
  • Patent number: 4382684
    Abstract: An apparatus for mixing and dispensing liquid resins which comprises a mixing unit which is a stationary mixer and a dispersing unit which comprises a dispersing plate placed crossing the line of flow head of the stationary mixer and which has at least one perforation for allowing the materials to be mixed to pass therethrough, a first material supply tube having at least one perforation at the end thereof and which is stuck to the front surface of the dispersing plate for allowing a first material to pass therethrough and a second material supply tube which encloses the first material supply tube and conveys the second material. The structure is effective to cause a time-wise mixing function, because a delay or a time-wise deviation is given to the flow speed of a limited portion of the materials to be mixed, resultantly preventing such a defective mixing function as is caused by a potential discrepancy in commencement time of supply of all the materials to be mixed, from occurring.
    Type: Grant
    Filed: February 27, 1981
    Date of Patent: May 10, 1983
    Assignee: Sanjo Seiki Co., Ltd.
    Inventor: Nobuo Hori