Patents by Inventor Masayoshi Tsukagoshi

Masayoshi Tsukagoshi 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).

  • Variable displacement compressor having a noise reducing valve assembly
    Patent number: 6520751
    Abstract: In a variable displacement compressor of a piston type, a valve body (34) is movably placed adjacent to a main channel (32) communicating a suction port (26) with a suction chamber (24). The valve body is for variably controlling an opening area of the main channel. A fluid damper (38) is coupled to the valve body to damp vibration of the valve body. In addition, a bypass channel (39) is formed outside of the air damper to communicate the suction port with the suction chamber.
    Type: Grant
    Filed: April 2, 2001
    Date of Patent: February 18, 2003
    Assignee: Sanden Corporation
    Inventors: Masaaki Fujita, Masayoshi Tsukagoshi, Kazuhiko Takai
  • Variable displacement compressor capable of reducing generation of a noise
    Publication number: 20010026762
    Abstract: In a variable displacement compressor of a piston type, a valve body (34) is movably placed adjacent to a main channel (32) communicating a suction port (26) with a suction chamber (24). The valve body is for variably controlling an opening area of the main channel. An air damper (38) is coupled to the valve body to damp vibration of the valve body. In addition, a bypass channel (39) is formed outside of the air damper to communicate the suction port with the suction chamber.
    Type: Application
    Filed: April 2, 2001
    Publication date: October 4, 2001
    Inventors: Masaaki Fujita, Masayoshi Tsukagoshi, Kazuihiko Takai
  • Control valve for a refrigerant compressor
    Patent number: D460521
    Type: Grant
    Filed: September 14, 2000
    Date of Patent: July 16, 2002
    Assignee: Sanden Corporation
    Inventors: Masaaki Fujita, Kazuhiko Takai, Masato Ogiwara, Masayoshi Tsukagoshi