Patents by Inventor Toshiki Okii
Toshiki Okii 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).
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Patent number: 7503754Abstract: 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: GrantFiled: April 6, 2004Date of Patent: March 17, 2009Assignee: Fujikoki CorporationInventors: Toshiki Okii, Yoshiyuki Kume, Toru Watanuki
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Publication number: 20050211939Abstract: The present invention provides a control valve which is capable of providing the quantification of the maximum flow rate on the occasion of opening the extraction valve and a predetermined small flow rate on the occasion of closing the extraction valve.Type: ApplicationFiled: March 22, 2005Publication date: September 29, 2005Applicant: Fujikoki CorporationInventors: Daisuke Morisawa, Toshiki Okii
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Publication number: 20050067598Abstract: A control valve for use in a variable capacity type compressor, the control valve includes a valve body (60); a valve (80); a solenoid magnetizing portion (70); and a pressure sensitive portion (86) comprising a pressure sensor (86a). The valve (80) is provided to have a large diametral portion (82a), and a neck portion (82) neighboring, through a step portion, to the large diametral portion. The valve body (60) is provided with a guiding hole (68) in which a circumferential wall portion of the large diametral portion (82a) is to be introduced and slidably moved. The step portion is provided with a plane (183) extending from the wall portion of the large diametral portion (82a) toward the neck portion (82) to a predetermined extent. The neck portion (82) is partially tapered to form a tapered portion (184). The large diametral portion (82a) is provided, in the vicinity of the step portion, with a groove or grooves (185).Type: ApplicationFiled: September 29, 2004Publication date: March 31, 2005Applicant: Fujikoki CorporationInventors: Toshiki Okii, Yoshiyuki Kume
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Publication number: 20040202552Abstract: 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: ApplicationFiled: April 6, 2004Publication date: October 14, 2004Inventors: Toshiki Okii, Yoshiyuki Kume, Toru Watanuki
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Patent number: 6769667Abstract: The sensitivity of a pressure-sensitive element in a pressure-sensitive part of a control valve for variable-capacity compressor is made adjustable by means of an adjusting screw provided so as to permit an adjustment of forward and backward movement with respect to a frame supporting the pressure-sensitive part. The adjusting screw is rotated by engaging an engagement part, which is annexed to a coil assembly constituting a solenoid excitation part, against the adjusting screw thereby to operate the coil assembly.Type: GrantFiled: November 22, 2002Date of Patent: August 3, 2004Assignee: Fujikoki CorporationInventors: Yoshiyuki Kume, Toshiki Okii, Masayuki Imai
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Patent number: 6626645Abstract: A valve element disposed in the valve chamber of a control valve body of a control valve for variable capacity compressors performs opening and closing operations by a plunger. The upper end of the valve element of this control valve body is inserted in the pressure chamber, while the lower end of the valve element is inserted in the plunger chamber of the solenoid excitation part. And the plunger chamber and the pressure chamber communicate with each other through a cancel hole formed in this valve element.Type: GrantFiled: April 1, 2002Date of Patent: September 30, 2003Assignee: Fujikoki CorporationInventors: Toshiki Okii, Yoshiyuki Kume, Masayuki Imai
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Publication number: 20030102454Abstract: The sensitivity of a pressure-sensitive element in a pressure-sensitive part of a control valve for variable-capacity compressor is made adjustable by means of an adjusting screw provided so as to permit an adjustment of forward and backward movement with respect to a frame supporting the pressure-sensitive part. The adjusting screw is rotated by engaging an engagement part, which is annexed to a coil assembly constituting a solenoid excitation part, against the adjusting screw thereby to operate the coil assembly.Type: ApplicationFiled: November 22, 2002Publication date: June 5, 2003Inventors: Yoshiyuki Kume, Toshiki Okii, Masayuki Imai
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Patent number: 6561482Abstract: A control valve for a variable capacity compressor comprising a solenoid excitation unit positioned at the center thereof, a control valve body positioned at the upper side of said solenoid excitation unit, and a pressure sensitive unit positioned below said solenoid excitation unit, wherein said control valve body comprises a valve means for opening and closing the passage between a discharge pressure region and an intermediate pressure region of said compressor, said solenoid excitation unit is equipped with a plunger that moves according to excitation, a magnetic drawer, and a bellows for operating said valve means, and said pressure sensitive unit is equipped with a pressure sensitive portion spring for operating said valve means.Type: GrantFiled: September 27, 2001Date of Patent: May 13, 2003Assignee: Fujikoki CorporationInventor: Toshiki Okii
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Publication number: 20020182087Abstract: A valve element disposed in the valve chamber of a control valve body of a control valve for variable capacity compressors performs opening and closing operations by a plunger. The upper end of the valve element of this control valve body is inserted in the pressure chamber, while the lower end of the valve element is inserted in the plunger chamber of the solenoid excitation part. And the plunger chamber and the pressure chamber communicate with each other through a cancel hole formed in this valve element.Type: ApplicationFiled: April 1, 2002Publication date: December 5, 2002Inventors: Toshiki Okii, Yoshiyuki Kume, Masayuki Imai
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Patent number: 6485267Abstract: A control valve for a variable capacity compressor, which comprises a solenoid magnetization portion disposed at a central portion, a main body disposed on one side of the solenoid magnetization portion, and a pressure sensitive portion disposed on the other side of the solenoid magnetization portion. The main body comprises a discharge coolant port communicating with a discharge pressure region of the variable capacity compressor, a first intermediate coolant port communicating with a first intermediate pressure region, a suction coolant port communicating with a suction pressure region, and a second intermediate coolant port communicating with a second intermediate pressure region of the variable capacity compressor.Type: GrantFiled: September 27, 2000Date of Patent: November 26, 2002Assignee: Fujikoki CorporationInventors: Masayuki Imai, Toshiki Okii, Yoshiyuki Kume
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Publication number: 20020043639Abstract: A control valve for a variable capacity compressor comprising a solenoid excitation unit positioned at the center thereof, a control valve body positioned at the upper side of said solenoid excitation unit, and a pressure sensitive unit positioned below said solenoid excitation unit, wherein said control valve body comprises a valve means for opening and closing the passage between a discharge pressure region and an intermediate pressure region of said compressor, said solenoid excitation unit is equipped with a plunger that moves according to excitation, a magnetic drawer, and a bellows for operating said valve means, and said pressure sensitive unit is equipped with a pressure sensitive portion spring for operating said valve means.Type: ApplicationFiled: September 27, 2001Publication date: April 18, 2002Inventor: Toshiki Okii