Patents by Inventor Shigetomo Shiraishi
Shigetomo Shiraishi 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: 8659215Abstract: According to one embodiment, a motor has a cylindrical stator core and rotor. A first framework is fixed to a side of the stator core in an axial direction, and a first bearing housing is fixed to the outside of the first framework. A second framework is fixed to the other side of the stator core. A second bearing housing is fixed to the outside of the second framework. The rotor has a rotational shaft, supported by the bearings, extending into the frameworks. A rotor core is attached to the shaft. Support bases are fixed to the rotor, and are interposed by the rotor core. A locking member coupled to the first framework is configured to contact the first support base. A locking member coupled to the second framework is configured to contact the second support base. The rotor is fixed by the locking members contact with the support bases.Type: GrantFiled: September 9, 2011Date of Patent: February 25, 2014Assignee: Toshiba CorporationInventors: Takashi Nagayama, Shigetomo Shiraishi
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Patent number: 8584595Abstract: According to one embodiment, a vehicle drive apparatus configured to drive a vehicle includes a motor arranged on a bogie to drive a wheel, a cooling fan arranged to be rotatable integrally with a rotational shaft of the motor to cool the motor, a control device arranged under a floor of the body to face the bogie and configured to supply an electric power to the motor and control the motor, and a ventilation duct arranged between the motor and the control device and configured to guide a cooling wind blown by the cooling fan into the control device.Type: GrantFiled: October 28, 2010Date of Patent: November 19, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Taihei Koyama, Shinichi Noda, Shigetomo Shiraishi, Kazuaki Yuuki, Daisuke Misu
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Patent number: 8536744Abstract: According to one embodiment, a traction motor includes a stator core, a rotor core, a first bearing, a second bearing, a rotor shaft, a first ventilation passage made at an outer circumference portion of the stator core, a first fan, and a second ventilation passage to introduce external air. And, in the motor, a first minute gap is provided between an end portion of a first fan main plate and an inner circumference portion of the first bracket, cooling wind is discharged to the motor outside via the second ventilation passage, an outer circumference portion of the first fan, a ventilation portion in the first bracket and the first ventilation passage, and the second ventilation passage is made so that the cooling wind entered from the first air intake port flows around the rotor shaft portion between the first ventilation fan and the first bearing.Type: GrantFiled: September 9, 2011Date of Patent: September 17, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Takashi Nagayama, Shigetomo Shiraishi
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Publication number: 20130076172Abstract: An electric motor is disclosed that includes a first electric motor frame; a second electric motor frame positioned outside the first electric motor frame; a first ventilation path between the first frame and the second frame; and a first ventilation path fan installed within the first ventilation path. The first ventilation path fan can be integral with a shaft of the electric motor. The first ventilation path can be at least partially defined by the first and second electric motor frame. The electric motor of Claim 1 further comprising a control apparatus attached outside of the second frame. The electric motor can also include a second ventilation path between the control apparatus and the second frame wherein the second ventilation path is in communication with the first ventilation path. The electric motor can also include a second ventilation path fan located in the second ventilation path.Type: ApplicationFiled: August 27, 2012Publication date: March 28, 2013Inventors: Taihei Koyama, Shinichi Noda, Kazuaki Yuuki, Shigetomo Shiraishi
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Publication number: 20120062057Abstract: According to one embodiment, a traction motor includes a stator core, a rotor core, a first bearing, a second bearing, a rotor shaft, a first ventilation passage made at an outer circumference portion of the stator core, a first fan, and a second ventilation passage to introduce external air. And, in the motor, a first minute gap is provided between an end portion of a first fan main plate and an inner circumference portion of the first bracket, cooling wind is discharged to the motor outside via the second ventilation passage, an outer circumference portion of the first fan, a ventilation portion in the first bracket and the first ventilation passage, and the second ventilation passage is made so that the cooling wind entered from the first air intake port flows around the rotor shaft portion between the first ventilation fan and the first bearing.Type: ApplicationFiled: September 9, 2011Publication date: March 15, 2012Applicant: Kabushiki Kaisha ToshibaInventors: Takashi NAGAYAMA, Shigetomo Shiraishi
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Publication number: 20120062076Abstract: According to one embodiment, a motor has a cylindrical stator core and rotor. A first framework is fixed to a side of the stator core in an axial direction, and a first bearing housing is fixed to the outside of the first framework. A second framework is fixed to the other side of the stator core. A second bearing housing is fixed to the outside of the second framework. The rotor has a rotational shaft, supported by the bearings, extending into the frameworks. A rotor core is attached to the shaft. Support bases are fixed to the rotor, and are interposed by the rotor core. A locking member coupled to the first framework is configured to contact the first support base. A locking member coupled to the second framework is configured to contact the second support base. The rotor is fixed by the locking members contact with the support bases.Type: ApplicationFiled: September 9, 2011Publication date: March 15, 2012Inventors: Takashi Nagayama, Shigetomo Shiraishi
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Publication number: 20110100253Abstract: According to one embodiment, a vehicle drive apparatus configured to drive a vehicle includes a motor arranged on a bogie to drive a wheel, a cooling fan arranged to be rotatable integrally with a rotational shaft of the motor to cool the motor, a control device arranged under a floor of the body to face the bogie and configured to supply an electric power to the motor and control the motor, and a ventilation duct arranged between the motor and the control device and configured to guide a cooling wind blown by the cooling fan into the control device.Type: ApplicationFiled: October 28, 2010Publication date: May 5, 2011Inventors: Taihei KOYAMA, Shinichi Noda, Shigetomo Shiraishi, Kazuaki Yuuki, Daisuke Misu
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Patent number: 7462964Abstract: A first minute gap (18) is formed between the front end of a ventilation fan (16) and a first bracket (8) and a second minute gap (21) is formed between the front end of a partition member (19) and a second bracket (11); a first aperture (9a) is provided in a location at the inner periphery further inward than the vanes (16b) on the bearing bracket (9); a current of cooling air is formed by introduction of external air by the ventilation fan from this aperture; this current of cooling air is again discharged to the outside through a ventilation passage (8a) of the first bracket and a ventilation passage (1a) on the outer peripheral side of the stator core (1); in addition, a second aperture (11b) is provided in the second bracket (11), a current of cooling air is formed by introduction of external air by the ventilation fan from the second aperture (11b); and this current of cooling air is again discharged to the outside through the ventilation passage (3a) of the rotor core (3), the ventilation passage of thType: GrantFiled: March 23, 2006Date of Patent: December 9, 2008Assignee: Kabushiki Kaisha ToshibaInventors: Takashi Nagayama, Minoru Kitamura, Shigetomo Shiraishi
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Publication number: 20070273220Abstract: A controller-integrated motor includes a motor main body and a controller integrated with the motor main body to control the motor main body, the motor main body, including a stator core, a shaft which rotates to exert driving force on the motor main body, a frame which holds the stator core and the shaft, and an outer fan provided around the shaft so that the motor main body is recessed inward toward a rotational center of the shaft, the outer fan discharging cooling air stream to cool the motor main body, the controller being provided in proximity to an outer periphery of the frame, the motor main body being formed so that a cooling air stream from the outer fan flows in an axial direction of the shaft along an outer peripheral surface of the frame.Type: ApplicationFiled: May 10, 2007Publication date: November 29, 2007Inventors: Taihei KOYAMA, Shinichi Noda, Kenzo Tonoki, Shigetomo Shiraishi
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Publication number: 20070164618Abstract: The main body of a rotary electrical machine is accommodated in a frame (1). A circulatory device (5) is provided that is rotated by a rotor (3) of said rotary electrical machine, in which there is accommodated cooling liquid (7) that cools at least the main body of the rotary electrical machine. The circulatory device (5) circulates said cooling liquid (7) to outside of the frame (1) by pump action. The cooling liquid (7) is accumulated by a reserve tank before being circulated within the frame (1). After the heated cooling liquid (7) is cooled in the reserve tank, this accumulated cooling liquid (7) is then caused to flow back into the frame (1) by the pressure difference.Type: ApplicationFiled: December 22, 2006Publication date: July 19, 2007Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Taihei Koyama, Shinichi Noda, Kenzo Tonoki, Shigetomo Shiraishi
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Publication number: 20060226717Abstract: A first minute gap (18) is formed between the front end of a ventilation fan (16) and a first bracket (8) and a second minute gap (21) is formed between the front end of a partition member (19) and a second bracket (11); a first aperture (9a) is provided in a location at the inner periphery further inward than the vanes (16b) on the bearing bracket (9); a current of cooling air is formed by introduction of external air by the ventilation fan from this aperture; this current of cooling air is again discharged to the outside through a ventilation passage (8a) of the first bracket and a ventilation passage (1a) on the outer peripheral side of the stator core (1); in addition, a second aperture (11b) is provided in the second bracket (11), a current of cooling air is formed by introduction of external air by the ventilation fan from the second aperture (11b); and this current of cooling air is again discharged to the outside through the ventilation passage (3a) of the rotor core (3), the ventilation passage of thType: ApplicationFiled: March 23, 2006Publication date: October 12, 2006Inventors: Takashi Nagayama, Minoru Kitamura, Shigetomo Shiraishi
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Patent number: 6891290Abstract: A fully enclosed type motor with outer fans includes a ventilation fan. The fan has radially extending blades on a bracket side, and radially extending blades on a core side. Outside air is let into an air passage as cooling air from an opening formed in the bracket on an inner side of the blades. The cooling air is fed into a cooling hole formed in an outer peripheral part of a stator core and then discharged to the outside. Air within the motor body, which is fed from the blades, is passed through an external heat exchanger and returned to the inside of the motor body.Type: GrantFiled: November 24, 2003Date of Patent: May 10, 2005Assignee: Kabushiki Kaisha ToshibaInventors: Takashi Nagayama, Minoru Kitamura, Shigetomo Shiraishi, Tadashi Matsuura
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Publication number: 20040150270Abstract: A fully enclosed type motor with outer fans includes a ventilation fan. The fan has radially extending blades on a bracket side, and radially extending blades on a core side. Outside air is let into an air passage as cooling air from an opening formed in the bracket on an inner side of the blades. The cooling air is fed into a cooling hole formed in an outer peripheral part of a stator core and then discharged to the outside. Air within the motor body, which is fed from the blades, is passed through an external heat exchanger and returned to the inside of the motor body.Type: ApplicationFiled: November 24, 2003Publication date: August 5, 2004Inventors: Takashi Nagayama, Minoru Kitamura, Shigetomo Shiraishi, Tadashi Matsuura