Patents by Inventor Keiichi Yoshii

Keiichi Yoshii 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: 5448899
    Abstract: A refrigerant evaporator for a refrigeration cycle which separates a refrigerant of a two-phase gas and liquid state introduced from a pressure reduction means into a liquid refrigerant and a gas refrigerant by a gas and liquid separation means and distributes at least the liquid refrigerant to a plurality of refrigerant passageways of a heat exchange portion by a distribution means such as a tank. The distributed refrigerant has a single phase such as a liquid refrigerant and therefore the distribution is uniformly and equally carried out, the efficiency of the evaporator becomes higher, and the size can be reduced.
    Type: Grant
    Filed: October 20, 1993
    Date of Patent: September 12, 1995
    Assignee: Nippondenso Co., Ltd.
    Inventors: Toshio Ohara, Yoshiyuki Yamauchi, Masahiro Shimoya, Etuo Hasegawa, Keiichi Yoshii, Keiichi Kitamura, Kenichi Fujiwara, Yasushi Yamanaka, Hisayoshi Sakakibara, Yosiharu Kajikawa
  • Patent number: 5390507
    Abstract: A refrigerant evaporator for a refrigeration cycle provided with a heat exchanging unit, comprising a passageway to be cooled and a cooling passageway, and an evaporating unit for cooling the air, wherein a part of the inflowing refrigerant is divided, passed through a throttle to be reduced in pressure, and then passed through the cooling passageway of the heat exchanging unit, the inflowing refrigerant passing through the passageway to be cooled is cooled and completely changed to the liquid state and then passed into the evaporating unit, whereby the refrigerant is uniformly distributed to a plurality of refrigerant passageways of the evaporating unit.
    Type: Grant
    Filed: September 16, 1993
    Date of Patent: February 21, 1995
    Assignee: Nippondenso Co., Ltd.
    Inventors: Masahiro Shimoya, Shigeo Numazawa, Yoshiyuki Yamauchi, Etuo Hasegawa, Toshio Ohara, Keiichi Yoshii