Patents by Inventor Atsuhide Suzuki
Atsuhide Suzuki 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: 20070224037Abstract: A geothermal turbine comprises a turbine casing, a turbine rotor shaft, a plurality of nozzle diaphragm outer rings fixed to the turbine casing, a plurality of nozzle diaphragm inner rings located radially inside the nozzle diaphragm outer rings, a plurality of nozzles placed between the nozzle diaphragm outer rings and the nozzle diaphragm inner rings, which form a steam passage, a plurality of rotor blades mounted on the turbine rotor shaft, which face the nozzles and form a blade cascade in a circumferential direction, a shroud arranged on tip of the rotor blade, an overhang attached to the nozzle diaphragm outer ring, which extends downstream of the nozzles and has an inner surface facing radially outside the shroud, and a plurality of sealing fins which protrude radially outward from the shroud and face the overhang.Type: ApplicationFiled: December 21, 2006Publication date: September 27, 2007Inventors: Atsuhide Suzuki, Toshihiro Fujiwara, Masataka Fukuda, Kazuaki Ikeda, Toshihiro Matsuura, Osamu Watanabe, Hisao Fujihashi, Kentaro Takagi
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Patent number: 7165943Abstract: A geothermal turbine comprises a turbine casing, a turbine rotor shaft, a plurality of nozzle diaphragm outer rings fixed to the turbine casing, a plurality of nozzle diaphragm inner rings located radially inside the nozzle diaphragm outer rings, a plurality of nozzles placed between the nozzle diaphragm outer rings and the nozzle diaphragm inner rings, which form a steam passage, a plurality of rotor blades mounted on the turbine rotor shaft, which face the nozzles and form a blade cascade in a circumferential direction, a shroud arranged on tip of the rotor blade, an overhang attached to the nozzle diaphragm outer ring, which extends downstream of the nozzles and has an inner surface facing radially outside the shroud, and a plurality of sealing fins which protrude radially outward from the shroud and face the overhang.Type: GrantFiled: August 30, 2004Date of Patent: January 23, 2007Assignee: Kabushiki Kaisha ToshibaInventors: Atsuhide Suzuki, Toshihiro Fujiwara, Masataka Fukuda, Kazuaki Ikeda, Toshihiro Matsuura, Osamu Watanabe, Hisao Fujihashi, Kentaro Takagi
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Patent number: 6860718Abstract: A geothermal turbine comprises a turbine casing, a turbine rotor shaft, a plurality of nozzle diaphragm outer rings fixed to the turbine casing, a plurality of nozzle diaphragm inner rings located radially inside the nozzle diaphragm outer rings, a plurality of nozzles placed between the nozzle diaphragm outer rings and the nozzle diaphragm inner rings, which form a steam passage, a plurality of rotor blades mounted on the turbine rotor shaft, which face the nozzles and form a blade cascade in a circumferential direction, a shroud arranged on tip of the rotor blade, an overhang attached to the nozzle diaphragm outer ring, which extends downstream of the nozzles and has an inner surface facing radially outside the shroud, and a plurality of sealing fins which protrude radially outward from the shroud and face the overhang.Type: GrantFiled: January 27, 2003Date of Patent: March 1, 2005Assignee: Kabushiki Kaisha ToshibaInventors: Atsuhide Suzuki, Toshihiro Fujiwara, Masataka Fukuda, Kazuaki Ikeda, Toshihiro Matsuura, Osamu Watanabe, Hisao Fujihashi, Kentaro Takagi
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Publication number: 20050025617Abstract: A geothermal turbine comprises a turbine casing, a turbine rotor shaft, a plurality of nozzle diaphragm outer rings fixed to the turbine casing, a plurality of nozzle diaphragm inner rings located radially inside the nozzle diaphragm outer rings, a plurality of nozzles placed between the nozzle diaphragm outer rings and the nozzle diaphragm inner rings, which form a steam passage, a plurality of rotor blades mounted on the turbine rotor shaft, which face the nozzles and form a blade cascade in a circumferential direction, a shroud arranged on tip of the rotor blade, an overhang attached to the nozzle diaphragm outer ring, which extends downstream of the nozzles and has an inner surface facing radially outside the shroud, and a plurality of sealing fins which protrude radially outward from the shroud and face the overhang.Type: ApplicationFiled: August 30, 2004Publication date: February 3, 2005Inventors: Atsuhide Suzuki, Toshihiro Fujiwara, Masataka Fukuda, Kazuaki Ikeda, Toshihiro Matsuura, Osamu Watanabe, Hisao Fujihashi, Kentaro Takagi
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Publication number: 20030165382Abstract: A geothermal turbine comprises a turbine casing, a turbine rotor shaft, a plurality of nozzle diaphragm outer rings fixed to the turbine casing, a plurality of nozzle diaphragm inner rings located radially inside the nozzle diaphragm outer rings, a plurality of nozzles placed between the nozzle diaphragm outer rings and the nozzle diaphragm inner rings, which form a steam passage, a plurality of rotor blades mounted on the turbine rotor shaft, which face the nozzles and form a blade cascade in a circumferential direction, a shroud arranged on tip of the rotor blade, an overhang attached to the nozzle diaphragm outer ring, which extends downstream of the nozzles and has an inner surface facing radially outside the shroud, and a plurality of sealing fins which protrude radially outward from the shroud and face the overhang.Type: ApplicationFiled: January 27, 2003Publication date: September 4, 2003Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Atsuhide Suzuki, Toshihiro Fujiwara, Masataka Fukuda, Kazuaki Ikeda, Toshihiro Matsuura, Osamu Watanabe, Hisao Fujihashi, Kentaro Takagi
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Patent number: 5841231Abstract: The present invention concerns a photomultiplier having a lamination structure of fine mesh dynodes arranged at predetermined intervals, capable of detecting photons even in a high magnetic field. This photomultiplier is arranged so that hollow pipes penetrating electrodes for supporting the fine mesh dynodes define the lamination structure of an electron multiplier unit. This arrangement permits the intervals between the fine mesh dynodes to be accurately controlled, thereby obtaining the photomultiplier production errors of which are well suppressed and preventing that the fine mesh dynodes are ripped.Type: GrantFiled: May 17, 1996Date of Patent: November 24, 1998Assignee: Hamamatsu Photonics K.K.Inventors: Suenori Kimura, Masuo Ito, Atsuhide Suzuki
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Patent number: 5511948Abstract: In an axial-flow turbine, at least one of front and rear side contact surfaces of shrouds (3a or 3b) of blades (1a or 1b) with respect to the turbine rotational direction is formed at certain angle with respect to a radial line connecting the rotor center and the contact surface. The shroud (3a) of the blade (1a) of a first kind is formed in a trapezoidal shape converging radially outward in cross section taken in a plane perpendicular to the turbine axial direction, and the shroud (3b) of the blade (1b) of a second kind is formed in an inverted trapezoidal shape converging radially inward in the cross section. Further, half of an angle (2.alpha.) between the front and rear side contact surfaces of the shrouds (3a or 3b) is made smaller than a static frictional angle of the contact surface.Type: GrantFiled: October 11, 1994Date of Patent: April 30, 1996Assignee: Kabushiki Kaisha ToshibaInventors: Atsuhide Suzuki, Hirotsugu Kodama, Toshio Suzuki
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Patent number: 5388960Abstract: A forced-air cooling apparatus is provided for a steam turbine which comprises an outer casing composed of upper and lower casing halves, an inner casing composed of upper and lower casing halves and disposed inside the outer casing and a rotor coaxially disposed inside the inner casing for forming a steam flow passage between the inner casing and the rotor and in which steam introduced into the steam flow passage from a steam inlet portion is impinged against blades of the rotor to impart a turning force thereto as a movable portion such as rotor with respect to a stationary portion such as an inner casing.Type: GrantFiled: October 5, 1993Date of Patent: February 14, 1995Assignee: Kabushiki Kaisha ToshibaInventors: Atsuhide Suzuki, Shinya Ayano, Yukio Shinozaki, Shigeo Hosoi