Patents by Inventor Hiroyuki Iijima

Hiroyuki Iijima 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: 5927093
    Abstract: A refrigerant distribution unit 10 is an integrated structure comprising: a multiplicity of branch tubes 12a-12c connectable with a multiplicity of indoor units 1a-1c; a distributor 11, connected with one refrigerant tube 5a extending from an outdoor unit for receiving refrigerant from the outdoor unit, the distributor distributing the refrigerant to the multiple branch tubes 12a-12c; and electric valves 15 provided one in each of the branch tubes 12a-12c for controlling the flows of refrigerant that pass through the respective branch tubes; and a case for enclosing the flow control unit. The refrigerant distribution unit 10 enables distribution of optimal amounts of refrigerant to all of the coexisting indoor units 1a-1e, even when the indoor units 1d-1e have much larger heat capacities than the indoor units 1a-1c.
    Type: Grant
    Filed: February 25, 1998
    Date of Patent: July 27, 1999
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Hiroshi Noguchi, Hiroyuki Iijima, Kiyoshi Kobayashi
  • Patent number: 4970662
    Abstract: An x-y plotter having a table on which a recording medium is to be carried, a linearly movable carriage which supports a writing tool so as to move up and down, a unit for linearly moving the recording medium along the plane of the medium in directions perpendicular to the directions of the movement of the carriage, and a first member for bringing only the portion of the recording medium located in the vicinity of a travel line along which the writing tool moves into close contact with the table and for lifting at least the portions of the recording medium located on opposite sides of the travel line, as viewed in the direction of the movement of the recording medium.
    Type: Grant
    Filed: June 28, 1989
    Date of Patent: November 13, 1990
    Assignee: Fujitsu Limited
    Inventors: Toshiaki Tanaka, Takashi Arita, Kazuomi Ogata, Hiroyuki Iijima