Patents by Inventor Norio Kajita

Norio Kajita 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).

  • Cylinder, load port using it, and production system
    Patent number: 7377736
    Abstract: A cylinder which can precisely feed a piston rod 3 into three different positions. The cylinder includes a spring receiving member 14 which is placed coaxially with the piston rod in a piston room. Movement of the piston 4 is limited by one end of the piston room and a stopper 8 formed on the piston rod which prevents the piston from moving in the opposite direction. A first spring member 15 is disposed in the cylinder tube 2 to separate the spring receiving member from the piston. A hollow 9 is formed on the periphery of the piston rod at a further position from the piston than the stopper and a stop pin 11 in the cylinder tube 2 which is biased in the direction of the hollow by a second spring member 12 engages with the hollow. A load port utilizes the cylinder for a production system.
    Type: Grant
    Filed: May 2, 2000
    Date of Patent: May 27, 2008
    Assignees: CKD Corporation, Rorze Corporation
    Inventors: Atsuhiro Fujii, Norio Kajita, Mitsuyasu Okabe, Shoji Komatsu
  • Cylinder, load port using it, and production system
    Patent number: 6652212
    Abstract: A cylinder of the invention can precisely send out a piston rod 3 into four different positions and comprises: a spring receiving member 14 placed coaxially with piston rod 3 in a piston room (I-II) of a cylinder tube 2 so that the movement of spring receiving member 14 is limited by one end of the piston room; a first spring member 15 to separate the spring receiving member from the piston; a stopper 8 formed on piston rod 3 to limit spring receiving member 14 from moving in the opposite direction to piston 4, a hollow 9 formed on the periphery of piston rod 3 at farther position from piston 4 than stopper 8; and a stop pin 11 installed in the cylinder tube to be pressed in the direction of hollow 9 by a second spring member 12 to engage with hollow 9, wherein the movable length of piston rod 9 while stop pin 11 is engaged with hollow 9 is larger than movable distance of spring receiving member 14 from the piston. A load port and a production system of this invention are constructed using the cylinder.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: November 25, 2003
    Assignees: CKD Corporation, Semiconductor Leading Edge Technologies, Inc., Rorze Corporation
    Inventors: Shinyo Kimoto, Kenji Tokunaga, Katsunori Sakata, Norio Kajita
  • Cylinder, load port using it, and production system
    Publication number: 20020033606
    Abstract: The object of the invention provides a cylinder and a load port, which make it possible for FOUP whose latchkey receptacles are not at the 90-degree position to smoothly engage with the latchkeys into the receptacles without causing the damage of receptacles when the stage moves forwards to open FOUP. Another object of this invention is to provide a production system, which enables the mass-production of semiconductor with higher reliability.
    Type: Application
    Filed: October 31, 2001
    Publication date: March 21, 2002
    Inventors: Shinyo Kimoto, Kenji Tokunaga, Katsunori Sakata, Norio Kajita