Patents by Inventor Masato Tago

Masato Tago 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: 6598410
    Abstract: A refrigerator has a cold storage and freezer zones with individual fans and evaporators, a switching valve that allows refrigerant to flow simultaneously through each zone or through only one of the zones and a control which when power is supplied causes simultaneous flow, starting the compressor and a condenser fan while driving the cold storage fan at a high speed and the freezing zone fan at a low speed until such time that a set point time has been exceeded or the temperature set points of the zones has been reached by cooling.
    Type: Grant
    Filed: March 12, 2002
    Date of Patent: July 29, 2003
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Minoru Temmyo, Masato Tago
  • Publication number: 20020134095
    Abstract: A refrigerator includes a first passage including a cold storage zone capillary tube and a cold storage zone evaporator, the latter two being connected in series to each other, a second passage including a freezing zone capillary tube and a freezing zone evaporator, the latter two being connected in series to each other, a switching valve causing the refrigerant condensed by the condenser to flow selectively through any one of the first passage, the second passage and both the first and second passages, a variable speed, cold storage zone fan circulating air in the cold storage zone while the air is in contact with the cold storage zone evaporator, a variable speed, freezing zone fan circulating air in the freezing zone while the air is in contact with the freezing are evaporator, and a control device switching the switching valve upon power supply to the refrigerator so that the refrigerant flows simultaneously through both the first and second passages, starting the compressor, starting the cold storage zon
    Type: Application
    Filed: March 12, 2002
    Publication date: September 26, 2002
    Inventors: Minoru Temmyo, Masato Tago
  • Patent number: 6397608
    Abstract: A refrigerator having a refrigerator evaporator and a freezer evaporator, capable of controlling the refrigerant circulation correctly and reducing the delay in the refrigerant behaviors. When freezer mode is to be switched to refrigerator mode, at the end of the freezer mode, a refrigerant recovery run recovers the refrigerant from the freezer evaporator and feeds it to a condenser before the refrigerator mode by running a compressor while blocking the refrigerant to the freezer evaporator and by running a compressor fan.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: June 4, 2002
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tsutomu Sakuma, Koji Kashima, Masato Tago, Takashi Doi, Akihiro Noguchi
  • Patent number: 6370895
    Abstract: A refrigerator includes a first compartment, a second compartment, a compressor compressing and discharging refrigerant, a first evaporator connected to the compressor to cool the first compartment, the first evaporator having an outlet, a second evaporator connected to the compressor in parallel with the first evaporator to cool the second compartment, the second evaporator having an outlet, a check valve connected between the outlets of the first and second evaporators to prevent the refrigerant out of the first evaporator from entering the second evaporator, a flow-path switching element for switching a cooling mode between a first cooling mode in which the refrigerant discharged from the compressor is caused to flow through the first evaporator to thereby cool the first compartment and a second cooling mode in which the refrigerant discharged from the compressor is caused to flow through the second evaporator to thereby cool the second compartment, and a control device provided for controlling the compres
    Type: Grant
    Filed: September 21, 2000
    Date of Patent: April 16, 2002
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tsutomu Sakuma, Koji Kashima, Masato Tago, Takashi Doi, Akihiro Noguchi
  • Patent number: 5428973
    Abstract: A refrigerator having an air passage duct which contains therein a wire and tube condenser where a cooling air caused by a fan flows. A refrigerator includes: a machine compartment having a fan therein for causing a flow of cooling air, located at a bottom of the refrigerator; an air passasge duct, connected to the machine compartment, containing a wire and tube condenser (referred to as a wire condenser hereinafter), the air duct and the wire condenser being placed at the bottom of the refrigerator; and an exhaust port for discharging an air used for radiating a heat of the wire condenser, wherein the air passage duct is formed in a zigzag shape so that the cooling air flowing through the air passage duct crosses through the wire condenser.
    Type: Grant
    Filed: November 13, 1992
    Date of Patent: July 4, 1995
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Minoru Temmyo, Masato Tago, Koji Kashima
  • Patent number: 5259530
    Abstract: An automatic vending machine for automatically vending commodities comprises at least one storage unit for storing the commodities, at least two discharge paths downwardly branched from the storage unit, for discharging the commodities, and a feed unit for opening and closing the two discharge paths alternately for feeding the commodities one by one from the storage unit.
    Type: Grant
    Filed: October 2, 1991
    Date of Patent: November 9, 1993
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Seizo Ishine, Masato Tago, Kiyoshi Fujioka