Patents by Inventor Masuo Kamitaka

Masuo Kamitaka 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).

  • Patent number: 5133153
    Abstract: An opening/closing device of a door for a refrigerator or the like will open/close the door member at a desired side, namely, at the right side or at the left side, without requiring a movable operating handle. The device is simple in construction, has a high adiabatic efficiency, and can be easily incorporated in the door member. Therefore, no special mechanism is necessary in the door member and no structural change is required inside the door member.
    Type: Grant
    Filed: April 5, 1991
    Date of Patent: July 28, 1992
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Masuo Kamitaka
  • Patent number: 5064255
    Abstract: An opening/closing device of a door for a refrigerator or the like will open/close the door member at a desired side, namely, at the right side or at the left side, without requiring a movable operating handle. The device is simple in construction, has a high adiabatic efficiency, and can be easily incorporated in the door member. Therefore, no special mechanism is necessary in the door member and no structural change is required inside the door member.
    Type: Grant
    Filed: May 14, 1990
    Date of Patent: November 12, 1991
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yoshio Inui, Masayoshi Osaka, Mitsuo Tanaka, Masao Miyamoto, Tooru Hasegawa, Masuo Kamitaka, Hidekazu Kai, Hiroshi Kamikubo
  • Patent number: 5033272
    Abstract: A refrigerator comprising a refrigeration cycle which comprises a compressor, condenser, first capillary tube and first cooler connected into a loop, and a quick freezing refrigerant circuit connected in parallel with the first cooler and comprising a second capillary tube and a second cooler connected in series therewith. The refrigerant is passed through the first cooler for usual operation, or alternatively through the quick freezing circuit for quick freezing. During quick freezing, the first cooler is held out of operation, and the refrigerant has its pressure reduced in two steps by the first and second capillary tubes and is evaporated in the second cooler only, giving a low temperature effective for quick freezing. During usual operation, no refrigerant flows into the second cooler, which therefore remains free of frosting. The frost deposited on the second cooler during quick freezing disappears during the usual operation. Thus, the second cooler is substantially free from frost.
    Type: Grant
    Filed: January 8, 1990
    Date of Patent: July 23, 1991
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masaharu Yoshikawa, Kazuo Sugimoto, Masuo Kamitaka, Shinya Takagi, Hiroyuki Yoshida
  • Patent number: 4891952
    Abstract: A refrigerator comprising a refrigeration cycle which comprises a compressor, condenser, first capillary tube and first cooler connected into a loop, and a quick freezing refrigerant circuit connected in parallel with the first cooler and comprising a second capillary tube and a second cooler connected in series therewith. The refrigerant is passed through the first cooler for usual operation, or alternatively through the quick freezing circuit for quick freezing. During quick freezing, the first cooler is held out of operation, and the refrigerant has its pressure reduced in two steps by the first and second capillary tubes and is evaporated in the second cooler only, giving a low temperature effective for quick freezing. During usual operation, no refrigerant flows into the second cooler, which therefore remains free of frosting. The frost deposited on the second cooler during quick freezing disappears during the usual operation. Thus, the second cooler is substantially free from frost.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: January 9, 1990
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masaharu Yoshikawa, Kazuo Sugimoto, Masuo Kamitaka, Shinya Takagi, Hiroyuki Yoshida