Patents by Inventor Toru Watanuki

Toru Watanuki 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: 7690898
    Abstract: The control valve comprises a valve rod having a valve body part; a valve main body provided with a valve chamber having a valve port to/from which the valve body part contacts/separates, a discharge pressure refrigerant inlet for introducing the refrigerant from a compressor, and a refrigerant outlet communicating with a crank chamber of the compressor; an electromagnetic actuator having a plunger for moving the valve rod in the valve closing direction; a pressure sensing chamber in which suction pressure is introduced from the compressor; and a pressure sensitive response member for pressing the valve rod in the valve opening direction corresponding to the pressure in the pressure sensing chamber, wherein the valve rod is fitted to the plunger having a predetermined diametrical directional clearance so as not to be influenced from the lateral deviation and inclination of the plunger.
    Type: Grant
    Filed: April 6, 2007
    Date of Patent: April 6, 2010
    Assignee: Fujikoki Corporation
    Inventors: Yoskiyuki Kume, Toru Watanuki, Daisuke Morisawa
  • Publication number: 20090205348
    Abstract: There is provided a brazing method which makes it possible to rationally perform not only the brazing between a metal member such as a stator made of a magnetic material and a metal member such as a guide pipe made of a non-magnetic material but also the magnetic annealing of these metal members. By making use of a brazing material (90) which can be fused at a lower temperature than a magnetic annealing temperature of metal member (33), the metal member such as a stator made of a magnetic material and the metal member (35) such as a guide pipe made of a non-magnetic material are heated to a predetermined temperature in a furnace to perform the magnetic annealing of the metal member (33) concurrent with the brazing of these metal members.
    Type: Application
    Filed: April 24, 2009
    Publication date: August 20, 2009
    Inventors: Yoshiyuki Kume, Masayuki Imai, Tatsuya Kondo, Toru Watanuki
  • Patent number: 7503754
    Abstract: In a control valve for a variable capacity compressor, coolant that is sucked in from a suction chamber through a suction conduit is compressed and delivered to a delivery chamber through a delivery conduit and the coolant pressure is controlled by an electromagnetic control valve. Opening/closing control of a gas supply valve body (gas supply side) that communicates with the delivery conduit and a crank chamber and of an extraction valve body (extraction side) that communicates with the crank chamber and the suction conduit is performed in accordance with the suction coolant pressure of the suction conduit. A crank chamber communication port communicates with the extraction valve chamber.
    Type: Grant
    Filed: April 6, 2004
    Date of Patent: March 17, 2009
    Assignee: Fujikoki Corporation
    Inventors: Toshiki Okii, Yoshiyuki Kume, Toru Watanuki
  • Publication number: 20070243076
    Abstract: The control valve comprises a valve rod having a valve body part; a valve main body provided with a valve chamber having a valve port to/from which the valve body part contacts/separates, a discharge pressure refrigerant inlet for introducing the refrigerant from a compressor, and a refrigerant outlet communicating with a crank chamber of the compressor; an electromagnetic actuator having a plunger for moving the valve rod in the valve closing direction; a pressure sensing chamber in which suction pressure is introduced from the compressor; and a pressure sensitive response member for pressing the valve rod in the valve opening direction corresponding to the pressure in the pressure sensing chamber, wherein the valve rod is fitted to the plunger having a predetermined diametrical directional clearance so as not to be influenced from the lateral deviation and inclination of the plunger.
    Type: Application
    Filed: April 6, 2007
    Publication date: October 18, 2007
    Applicant: FUJIKOKI CORPORATION
    Inventors: Yoshiyuki Kume, Toru Watanuki, Daisuke Morisawa
  • Publication number: 20060193733
    Abstract: There is provided a brazing method which makes it possible to rationally perform not only the brazing between a metal member such as a stator made of a magnetic material and a metal member such as a guide pipe made of a non-magnetic material but also the magnetic annealing of these metal members. By making use of a brazing material (90) which can be fused at a lower temperature than a magnetic annealing temperature of metal member (33), the metal member such as a stator made of a magnetic material and the metal member (35) such as a guide pipe made of a non-magnetic material are heated to a predetermined temperature in a furnace to perform the magnetic annealing of the metal member (33) concurrent with the brazing of these metal members.
    Type: Application
    Filed: February 22, 2006
    Publication date: August 31, 2006
    Applicant: Fujikoki Corporation
    Inventors: Yoshiyuki Kume, Masayuki Imai, Tatsuya Kondo, Toru Watanuki
  • Publication number: 20040202552
    Abstract: In a control valve for a variable capacity compressor, coolant that is sucked in from a suction chamber through a suction conduit is compressed and delivered to a delivery chamber through a delivery conduit and the coolant pressure is controlled by an electromagnetic control valve. Opening/closing control of a gas supply valve body (gas supply side) that communicates with the delivery conduit and a crank chamber and of an extraction valve body (extraction side) that communicates with the crank chamber and the suction conduit is performed in accordance with the suction coolant pressure of the suction conduit. A crank chamber communication port communicates with the extraction valve chamber.
    Type: Application
    Filed: April 6, 2004
    Publication date: October 14, 2004
    Inventors: Toshiki Okii, Yoshiyuki Kume, Toru Watanuki