Patents by Inventor Takayoshi Nakazawa

Takayoshi Nakazawa 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).

  • Scroll compressor having a throttle pin moving in the longitudinal hole of the oil supply passage
    Patent number: 7044723
    Abstract: A scroll compressor supplies an optimum quantity of lubricating oil to a refrigerant compressing section and restrains a decrease in compression efficiency caused by gas leakage. An oil supply passage (35) whose discharge port is open to a joint surface of a main frame (3) and a fixed scroll (4) is provided, and a throttle pin (353) is inserted in the oil supply passage (35) with a predetermined clearance to regulate the inflow quantity of lubricating oil (0). Also, a groove-shaped connecting portion is formed in the joint surface on the main frame side to connect the discharge port to a compression chamber (43).
    Type: Grant
    Filed: September 7, 2004
    Date of Patent: May 16, 2006
    Assignee: Fujitsu General Limited
    Inventors: Naoya Morozumi, Masaki Fujino, Junya Tanaka, Takayoshi Nakazawa
  • Scroll compressor
    Publication number: 20050053508
    Abstract: There is provided a scroll compressor which can surely supply an optimum quantity of lubricating oil to a refrigerant compressing section and restrain a decrease in compression efficiency caused by gas leakage. An oil supply passage 35 whose discharge port is open to a joint surface of a main frame 3 and a fixed scroll 4 is provided, and a throttle pin 353 is inserted in the oil supply passage 35 with a predetermined clearance to regulate the inflow quantity of lubricating oil O. Also, a groove-shaped connecting portion is formed in the joint surface on the main frame side to connect the discharge port to a compression chamber 43.
    Type: Application
    Filed: September 7, 2004
    Publication date: March 10, 2005
    Inventors: Naoya Morozumi, Masaki Fujino, Junya Tanaka, Takayoshi Nakazawa