Patents by Inventor Shizuo Arima

Shizuo Arima 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).

  • Patent number: 4621771
    Abstract: A flow control nozzle with a nozzle body arranged at one side of a joint body and a driver arranged at the other side thereof. The nozzle body comprises a nozzle chip having an orifice at the center of the front end, a cone chip with turning grooves which is in abutting engagement with the tapered face within a cavity of the nozzle chip, and a control rod fitted slidably in an axial through-hole of the cone chip and has one end adapted to close the orifice. The driver comprises an electromagnetic plunger and an electromagnetic coil. The control rod and the electromagnetic plunger are biased toward each other by springs. This nozzle permits the proportional control of the quantity of spray to be performed.
    Type: Grant
    Filed: February 25, 1985
    Date of Patent: November 11, 1986
    Assignee: Taisan Industrial Co., Ltd.
    Inventors: Yasutsune Chiba, Shizuo Arima, Katsumi Nozawa, Hideo Nomura
  • Patent number: 4376618
    Abstract: An electromagnetic plunger pump includes a plunger which is electromagnetically activated. Normally, the plunger is supported in a balanced condition by a pair of opposing springs. Further, the plunger is vertically pierced by a hole extending along an axial line in which the plunger reciprocates in the vertical direction, responsive to an application of an intermittent electromagnetic force. A valve body is loosely fitted into a rod inserted in the vertical hole, reaching a contact portion of a discharge plunger, which interlocks with the electromagnetic plunger. The discharge plunger is forced shut by a spring acting in the valve closing direction. The valve body engages a valve seat to close a discharge passage during a pump shut-down. The valve body is liberated from the valve seat to open the discharge passage during pump operation.
    Type: Grant
    Filed: April 24, 1981
    Date of Patent: March 15, 1983
    Assignee: Taisan Industrial Co., Ltd.
    Inventors: Akira Toyoda, Shizuo Arima, Katsumi Nozawa, Kenji Igarashi
  • Patent number: 4220910
    Abstract: An electromagnetic pump in which the ignition sound at the time of starting of a combustor is lowered by delaying a raising speed for the delivery pressure of fuel oil. The delivery pressure of fuel oil is automatically controlled by means of an electronic delay circuit including a silicon controlled rectifier which is phase controlled in synchronism with a power source, a trigger diode, and resistors and condensers used for setting the amount of time delay.
    Type: Grant
    Filed: December 30, 1977
    Date of Patent: September 2, 1980
    Assignee: Taisan Industrial Co., Ltd.
    Inventors: Yasutsune Chiba, Shizuo Arima, Shoji Suzuki, Masayuki Saitoh
  • Patent number: 3958902
    Abstract: An electromagnetic pump comprising an electromagnetic coil, magnetic paths constituting a yoke arranged in the electromagnetic coil, an electromagnetic plunger reciprocatorily mounted in the electromagnetic coil, and a main body including a suction port, a discharge port and suction and discharge valve means and connected to the electromagnetic coil. At least one of the magnetic paths has a reduced cross-sectional area portion at one end portion thereof disposed on the longitudinal axis of the electromagnetic coil and is formed with a magnetic gap between the reduced cross-sectional area portion and the end portion of the electromagnetic plunger. A movable iron member of the cylindrical shape is arranged in the magnetic gap in which the lines of magnetic force are concentrated in passing through the magnetic path. The movable iron member is moved upwardly by the electromagnetic force to facilitate further concentration of the lines of magnetic force therein.
    Type: Grant
    Filed: May 22, 1975
    Date of Patent: May 25, 1976
    Assignee: Taisan Industrial Co., Ltd.
    Inventors: Akira Toyoda, Shizuo Arima