Patents by Inventor Yuujirou Morita

Yuujirou Morita 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).

  • Swash plate-type variable displacement compressor
    Patent number: 6604447
    Abstract: A swash plate-type, variable displacement compressor according to the present invention has a structure wherein the shoe holding portion of the piston sandwiches the swash plate from inside. The swash plate is connected to the rotor by a pin which extends in a direction tangential to a surface of a virtual cylinder around an axis of the drive shaft so as to be capable of swinging with respect to the pin. Especially, the position of the pin in the axial direction of the drive shaft is selected, so that a piston top clearance of a piston which is in a top dead center position becomes zero. By this configuration, the piston top clearance of all the pistons may be maintained at zero for all oblique angles of the swash plate. As a result, for any oblique angle, the volumetric efficiency of the compressor may be improved.
    Type: Grant
    Filed: October 22, 2001
    Date of Patent: August 12, 2003
    Assignee: Sanden Corporation
    Inventors: Jiro Iizuka, Yuujirou Morita
  • Swash plate-type variable displacement compressor
    Publication number: 20020053281
    Abstract: A swash plate-type, variable displacement compressor according to the present invention has a structure wherein the shoe holding portion of the piston sandwiches the swash plate from inside. The swash plate is connected to the rotor by a pin which extends in a direction tangential to a surface of a virtual cylinder around an axis of the drive shaft so as to be capable of swinging with respect to the pin. Especially, the position of the pin in the axial direction of the drive shaft is selected, so that a piston top clearance of a piston which is in a top dead center position becomes zero. By this configuration, the piston top clearance of all the pistons may be maintained at zero for all oblique angles of the swash plate. As a result, for any oblique angle, the volumetric efficiency of the compressor may be improved.
    Type: Application
    Filed: October 22, 2001
    Publication date: May 9, 2002
    Inventors: Jiro Iizuka, Yuujirou Morita
  • Refrigerant compressor for a vehicle air conditioner
    Patent number: D446221
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: August 7, 2001
    Assignee: Sanden Corporation
    Inventors: Hiroshi Kanou, Yuujirou Morita
  • Piston for a refrigerant compressor
    Patent number: D447150
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: August 28, 2001
    Assignee: Sanden Corporation
    Inventors: Kiyoshi Miyazawa, Hiroshi Kanou, Mitsuhiro Takashima, Yuujirou Morita
  • Pistons for a refrigerant compressor
    Patent number: D450060
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: November 6, 2001
    Assignee: Sanden Corporation
    Inventors: Kiyoshi Miyazawa, Hiroshi Kanou, Mitsuhiro Takashima, Yuujirou Morita
  • Refrigerant compressor for a vehicle air conditioner
    Patent number: D450328
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: November 13, 2001
    Assignee: Sanden Corporation
    Inventors: Hiroshi Kanou, Yuujirou Morita
  • Pistons for a refrigerant compressor
    Patent number: D450329
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: November 13, 2001
    Assignee: Sanden Corporation
    Inventors: Hiroshi Kanou, Yuujirou Morita