Patents by Inventor Fumiaki Ishida
Fumiaki Ishida 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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Publication number: 20160145765Abstract: [Object] To provide a high-quality, transparent garnet single crystal with suppressed cell growth that would otherwise lead to partially inhomogeneous crystal composition, and a method for producing the garnet single crystal. [Solving means] The garnet single crystal is grown by bringing a seed crystal into contact with a raw-material melt in a crucible disposed inside a chamber and pulling, while rotating, the seed crystal. The garnet single crystal is characterized by being represented by a general formula: (Tb3-xScx) (Sc2-yAly)Al3O12-z (provided that 0.11?x?0.14, and 0.17?y?0.23). The garnet single crystal is grown as follows. First, a mixture powder containing 20.9 to 21.2% by mole terbium oxide, 32.7 to 33.3% by mole scandium oxide, and the balance of aluminium oxide and unavoidable impurities is filled into the crucible and melted.Type: ApplicationFiled: March 20, 2014Publication date: May 26, 2016Applicant: SUMITOMO METAL MINING CO., LTD.Inventors: Masayoshi MATSUI, Kazuki TATSUMIYA, Fumiaki ISHIDA
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Patent number: 8033783Abstract: The present invention aims at providing a diagonal flow fan or a silencer for the diagonal flow fan, which have the same outer shape as a suction port and are compact, and can also obtain an effective sound absorbing effect of a moderate frequency range. In the diagonal flow fan comprising a diagonal flow impeller 1 disposed with a blade 1a so as to obliquely send an air to an axis of rotation 21, a fan casing 2 for covering this diagonal flow impeller 1, and a suction port 3 for sucking the fluid in the direction to the axis of rotation of this fan casing 2, the open front side of the suction port 3 is provided with a silencing portion comprising a shield 4 and a punching metal 5, so that the noise of the moderate frequency range of 500 to 1000 Hz generated in the diagonal flow fan was suppressed.Type: GrantFiled: August 7, 2007Date of Patent: October 11, 2011Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Shizu Ishikawa, Fumiaki Ishida
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Patent number: 7806649Abstract: A blower comprising: a vane wheel including a pair of grooves, and blades extending in a radial direction of the vane wheel in each groove, and a casing including stationary flow paths facing to the grooves respectively so that the gas urged in the grooves is capable of flowing in a circumferential direction in the stationary flow paths, a guide flow path extending in the axial directions to fluidly communicate with both of the stationary flow paths to enable the gas to flow from one of the stationary flow paths to the other one of the stationary flow paths, an inlet port for introducing the gas into the one of the stationary flow paths facing to the one of the grooves and an outlet port for discharging the gas out of the other one of the stationary flow paths facing to the other one of the grooves.Type: GrantFiled: November 25, 2008Date of Patent: October 5, 2010Assignee: Hitachi Industrial Equipment Systems Co., LtdInventors: Shizu Ishikawa, Fumiaki Ishida, Satoshi Takeda
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Publication number: 20090081021Abstract: A blower comprising: a vane wheel including a pair of grooves, and blades extending in a radial direction of the vane wheel in each groove, and a casing including stationary flow paths facing to the grooves respectively so that the gas urged in the grooves is capable of flowing in a circumferential direction in the stationary flow paths, a guide flow path extending in the axial directions to fluidly communicate with both of the stationary flow paths to enable the gas to flow from one of the stationary flow paths to the other one of the stationary flow paths, an inlet port for introducing the gas into the one of the stationary flow paths facing to the one of the grooves and an outlet port for discharging the gas out of the other one of the stationary flow paths facing to the other one of the grooves.Type: ApplicationFiled: November 25, 2008Publication date: March 26, 2009Inventors: Shizu Ishikawa, Fumiaki Ishida, Satoshi Takeda
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Patent number: 7470104Abstract: A blower comprising: a vane wheel including a pair of grooves, and blades extending in a radial direction of the vane wheel in each groove, and a casing including stationary flow paths facing to the grooves respectively so that the gas urged in the grooves is capable of flowing in a circumferential direction in the stationary flow paths, a guide flow path extending in the axial directions to fluidly communicate with both of the stationary flow paths to enable the gas to flow from one of the stationary flow paths to the other one of the stationary flow paths, an inlet port for introducing the gas into the one of the stationary flow paths facing to the one of the grooves and an outlet port for discharging the gas out of the other one of the stationary flow paths facing to the other one of the grooves.Type: GrantFiled: May 24, 2006Date of Patent: December 30, 2008Assignee: Hitachi Industrial Equipment Systems, Co. Ltd.Inventors: Shizu Ishikawa, Fumiaki Ishida, Satoshi Takeda
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Publication number: 20080152480Abstract: The present invention aims at providing a diagonal flow fan or a silencer for the diagonal flow fan, which have the same outer shape as a suction port and are compact, and can also obtain an effective sound absorbing effect of a moderate frequency range. In the diagonal flow fan comprising a diagonal flow impeller 1 disposed with a blade 1a so as to obliquely send an air to an axis of rotation 21, a fan casing 2 for covering this diagonal flow impeller 1, and a suction port 3 for sucking the fluid in the direction to the axis of rotation of this fan casing 2, the open front side of the suction port 3 is provided with a silencing portion comprising a shield 4 and a punching metal 5, so that the noise of the moderate frequency range of 500 to 1000 Hz generated in the diagonal flow fan was suppressed.Type: ApplicationFiled: August 7, 2007Publication date: June 26, 2008Inventors: Shizu Ishikawa, Fumiaki Ishida
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Publication number: 20060269394Abstract: A blower comprising: a vane wheel including a pair of grooves, and blades extending in a radial direction of the vane wheel in each groove, and a casing including stationary flow paths facing to the grooves respectively so that the gas urged in the grooves is capable of flowing in a circumferential direction in the stationary flow paths, a guide flow path extending in the axial directions to fluidly communicate with both of the stationary flow paths to enable the gas to flow from one of the stationary flow paths to the other one of the stationary flow paths, an inlet port for introducing the gas into the one of the stationary flow paths facing to the one of the grooves and an outlet port for discharging the gas out of the other one of the stationary flow paths facing to the other one of the grooves.Type: ApplicationFiled: May 24, 2006Publication date: November 30, 2006Inventors: Shizu Ishikawa, Fumiaki Ishida, Satoshi Takeda
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Patent number: 5672052Abstract: A blower muffling apparatus includes a blower chamber for housing a blower therein, an exhaust chamber positioned adjacent the blower body side of a blower disposed in the blower chamber, communicating in one of upper and lower portions with the blower chamber, and having an exhaust port in the other portion, a muffling passage chamber disposed adjacent the blower chamber in the axial direction of the blower, and having one end communicating with the other portion of the exhaust chamber and the other end communicating with a discharge port of the blower through a flexible exhaust duct, and a duct accommodating chamber for accommodating the flexible exhaust duct therein, each of the chambers being surrounded by a sound-absorbing material. Exhaust gas of the blower is discharged from the flexible exhaust duct through the muffling passage chamber and the exhaust chamber to thereby absorb exhaust noise of the blower.Type: GrantFiled: February 5, 1996Date of Patent: September 30, 1997Assignee: Hitachi, Ltd.Inventors: Fumiaki Ishida, Masayuki Fujio, Hiromoto Ashihara, Takeshi Moritake
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Patent number: 5628615Abstract: A vane wheel driven by a shaft for transferring a gas, comprises, vortex flow chambers opening in a direction substantially parallel to the shaft to receive the gas, to urge the gas in a substantially circumferential direction of the vane wheel, and to generate and accelerate a vortex flow of the gas, A vane member includes a hub through which the vane member is connected to the shaft, with the vane member including a plurality of vanes each extending integrally from the hub in a substantially radial direction of the vane wheel. Each of the vanes includes a front surface for urging the gas in the substantially circumferential direction of the vane wheel. A vortex flow chamber wall extends integrally from both the hub and each of the vanes, and a cover contacts the vortex flow chamber wall to form the vortex flow chambers together with the vortex flow chamber wall and the vanes.Type: GrantFiled: June 6, 1995Date of Patent: May 13, 1997Assignee: Hitachi, Ltd.Inventors: Hiroshi Asabuki, Masayuki Fujio, Takashi Watanabe, Susumu Yamazaki, Fumiaki Ishida
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Patent number: 5600886Abstract: A vane wheel driven by a shaft for transferring a gas, comprises, vortex flow chambers opening in a direction substantially parallel to the shaft to receive the gas, to urge the gas in a substantially circumferential direction of the vane wheel, and to generate and accelerate a vortex flow of the gas. A vane member includes a hub through which the vane member is connected to the shaft, with the vane member including a plurality of vanes each extending integrally from the hub in a substantially radial direction of the vane wheel. Each of the vanes includes a front surface for urging the gas in the substantially circumferential direction of the vane wheel. A vortex flow chamber wall extends integrally from both the hub and each of the vanes, and a cover contacts with the vortex flow chamber wall to form the vortex flow chambers together with the vortex flow chamber wall and the vanes.Type: GrantFiled: June 6, 1995Date of Patent: February 11, 1997Assignee: Hitachi, Ltd.Inventors: Hiroshi Asabuki, Masayuki Fujio, Takashi Watanabe, Susumu Yamazaki, Fumiaki Ishida
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Patent number: 5569023Abstract: A vortex blower includes an induction motor and a blower portion driven by the motor. The blower portion includes an impeller and a casing. The impeller is so mounted on a rotary output shaft of the induction motor that the impeller is disposed near the induction motor. The casing is so disposed that the impeller is interposed between the induction motor and the casing. An inlet port and an outlet port are provided on an end of the casing opposite to the induction motor. The blower portion has approximately the same diameter as that of the induction motor.Type: GrantFiled: August 11, 1994Date of Patent: October 29, 1996Assignee: Hitachi, Ltd.Inventors: Fumiaki Ishida, Masayuki Fujio, Kazuo Kobayashi, Kengo Hasegawa
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Patent number: 5487639Abstract: A vane wheel driven by a shaft for transferring a gas, comprises, vortex flow chambers opening in a direction substantially parallel to the shaft to receive the gas, to urge the gas in a substantially circumferential direction of the vane wheel, and to generate and accelerate a vortex flow of the gas. A vane member includes a hub through which the vane member is connected to the shaft, with the vane member including a plurality of vanes each extending integrally from the hub in a substantially radial direction of the vane wheel. Each of the vanes includes a front surface for urging the gas in the substantially circumferential direction of the vane wheel. A vortex flow chamber wall extends integrally from both the hub and each of the vanes, and a cover contacts the vortex flow chamber wall to form the vortex flow chambers together with the vortex flow chamber wall and the vanes.Type: GrantFiled: February 22, 1994Date of Patent: January 30, 1996Assignee: Hitachi, Ltd.Inventors: Hiroshi Asabuki, Masayuki Fujio, Takashi Watanabe, Susumu Yamazaki, Fumiaki Ishida