Patents by Inventor Riko Tachigori

Riko Tachigori 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).

  • Air conditioner using inflammable refrigerant
    Patent number: 6571575
    Abstract: In an air conditioner using a flammable refrigerant of the present invention, an inner diameter of a liquid-side connecting pipe is reduced to less than 42.5% of that of a gas-side connecting pipe. By reducing the inner diameter of the pipe in which a liquid refrigerant of the air conditioner is reduced, it is possible to reduce the amount of refrigerant to be charged into the system without decreasing the capacity and the efficiency.
    Type: Grant
    Filed: August 12, 1999
    Date of Patent: June 3, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Akira Fujitaka, Yoshinori Kobayashi, Riko Tachigori
  • Air conditioner using flammable refrigerant
    Patent number: 6550273
    Abstract: In an air conditioner using a flammable refrigerant of the present invention, an inner diameter of a liquid-side connecting pipe is reduced to less than 42.5% of that of a gas-side connecting pipe. By reducing the inner diameter of the pipe in which a liquid refrigerant of the air conditioner is reduced, it is possible to reduce the amount of refrigerant to be charged into the system without decreasing the capacity and the efficiency.
    Type: Grant
    Filed: April 13, 2001
    Date of Patent: April 22, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Akira Fujitaka, Yoshinori Kobayashi, Riko Tachigori
  • Air conditioner using flammable refrigerant
    Publication number: 20010037649
    Abstract: In an air conditioner using a flammable refrigerant of the present invention, an inner diameter of a liquid-side connecting pipe is reduced to less than 42.5% of that of a gas-side connecting pipe. By reducing the inner diameter of the pipe in which a liquid refrigerant of the air conditioner is reduced, it is possible to reduce the amount of refrigerant to be charged into the system without decreasing the capacity and the efficiency.
    Type: Application
    Filed: April 13, 2001
    Publication date: November 8, 2001
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.,
    Inventors: Akira Fujitaka, Yoshinori Kobayashi, Riko Tachigori
  • Refrigerant leakage warning device for apparatus having refrigeration cycle using flammable refrigerant
    Patent number: 6073455
    Abstract: In a refrigerant leakage warning device for an apparatus having a refrigeration cycle using a flammable refrigerant as a refrigerant, when leakage of the refrigerant occurs, measures how to cope after the leakage of refrigerant occurs are indicated on an indoor unit. Therefore, the user can see the indication of the leakage and take the measures to cope with it, and it is possible to hold the damage at a minimum, and to enhance the safety.
    Type: Grant
    Filed: February 11, 1999
    Date of Patent: June 13, 2000
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Riko Tachigori, Akira Fujitaka, Yukio Watanabe, Yoshinori Kobayashi, Kanji Haneda