Patents by Inventor Isao Morita

Isao Morita 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: 10920659
    Abstract: A turbocharger includes a turbine impeller, a turbine housing which includes a scroll portion and a discharge port, a bypassing passage portion which guides a working fluid from the scroll portion to the discharge port, and a valve portion which controls the inflow of the working fluid to the bypassing passage portion. The hub side scroll is formed so that a cross-sectional area of a passage is larger than that of a shroud side scroll. The valve portion includes a hub side valve which controls the inflow of the working fluid from the hub side scroll to the bypassing passage portion and a shroud side valve which controls the inflow of the working fluid from the shroud side scroll to the bypassing passage portion. An operation of opening and closing the hub side valve is independent from an operation of opening and closing the shroud side valve.
    Type: Grant
    Filed: February 16, 2018
    Date of Patent: February 16, 2021
    Assignee: IHI Corporation
    Inventors: Isao Morita, Wataru Sato
  • Publication number: 20200040812
    Abstract: A turbocharger includes a turbine impeller, a turbine housing which includes a scroll portion and a discharge port, a bypassing passage portion which guides a working fluid from the scroll portion to the discharge port, and a valve portion which controls the inflow of the working fluid to the bypassing passage portion. The hub side scroll is formed so that a cross-sectional area of a passage is larger than that of a shroud side scroll. The valve portion includes a hub side valve which controls the inflow of the working fluid from the hub side scroll to the bypassing passage portion and a shroud side valve which controls the inflow of the working fluid from the shroud side scroll to the bypassing passage portion. An operation of opening and closing the hub side valve is independent from an operation of opening and closing the shroud side valve.
    Type: Application
    Filed: February 16, 2018
    Publication date: February 6, 2020
    Applicant: IHI Corporation
    Inventors: Isao MORITA, Wataru SATO
  • Publication number: 20190383152
    Abstract: A turbocharger includes a turbine housing having a hub-side scroll flow path and a shroud-side scroll flow path, and a turbine wheel having front edges for receiving a working fluid from the hub-side scroll flow path and the shroud-side scroll flow path. Each front edge of the turbine wheel includes a first portion for receiving the working fluid flowing out from the hub-side scroll flow path, and a second portion for receiving the working fluid flowing out from the shroud-side scroll flow path. The first portion is inclined with respect to a virtual plane including a rotational axis in a direction opposite a rotational direction of the turbine wheel. The second portion is inclined with respect to the virtual plane in the rotational direction.
    Type: Application
    Filed: February 22, 2018
    Publication date: December 19, 2019
    Applicant: IHI Corporation
    Inventor: Isao MORITA
  • Patent number: 9874224
    Abstract: A diffuser includes a ring-shaped parallel part, and a ring-shaped throttling part formed continuously to the inside of the parallel part in a radial direction. A wall surface of the throttling part includes a flow passage area minimum portion which makes minimal a flow passage area of the diffuser, and a ring-shaped protruding portion located closer to the outlet side of the compressor wheel than the flow passage area minimum portion, and protruding toward the flow passage of the diffuser.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: January 23, 2018
    Assignee: IHI Corporation
    Inventor: Isao Morita
  • Patent number: 9528386
    Abstract: This relates to a nozzle blade in which the leading edge shape has a curved-line shape that is formed by the distance from the rotation axis of the nozzle blade to the leading edge changing depending on the nozzle blade height position, and the trailing edge shape has a straight-line shape that is formed by the distance from the rotation axis of the nozzle blade to the trailing edge being constant irrespective of the nozzle blade height position.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: December 27, 2016
    Assignee: IHI CORPORATION
    Inventor: Isao Morita
  • Publication number: 20160084263
    Abstract: A diffuser includes a ring-shaped parallel part, and a ring-shaped throttling part formed continuously to the inside of the parallel part in a radial direction. A wall surface of the throttling part includes a flow passage area minimum portion which makes minimal a flow passage area of the diffuser, and a ring-shaped protruding portion located closer to the outlet side of the compressor wheel than the flow passage area minimum portion, and protruding toward the flow passage of the diffuser.
    Type: Application
    Filed: December 1, 2015
    Publication date: March 24, 2016
    Applicant: IHI Corporation
    Inventor: Isao MORITA
  • Patent number: 8807926
    Abstract: A variable capacity type turbocharger includes a bearing housing which rotatably supports a turbine impeller; a turbine housing; and an exhaust nozzle, wherein the exhaust nozzle includes a pair of exhaust introduction walls forming a passageway of the exhaust gas and a plurality of nozzle vanes disposed between the pair of exhaust introduction walls and supported to be rotatable about the turbine impeller, and wherein each nozzle vane includes a high-pressure wall surface facing the scroll passageway, the bearing housing side of the high-pressure wall surface is provided to be closer to the turbine impeller than the turbine housing side thereof, and when the turbine impeller rotates, the nozzle vane moves toward the turbine housing.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: August 19, 2014
    Assignee: IHI Corporation
    Inventors: Kenichi Nagao, Isao Morita, Satomi Unno, Hiroki Ono
  • Publication number: 20140112764
    Abstract: This relates to a nozzle blade in which the leading edge shape has a curved-line shape that is formed by the distance from the rotation axis of the nozzle blade to the leading edge changing depending on the nozzle blade height position, and the trailing edge shape has a straight-line shape that is formed by the distance from the rotation axis of the nozzle blade to the trailing edge being constant irrespective of the nozzle blade height position.
    Type: Application
    Filed: May 24, 2012
    Publication date: April 24, 2014
    Inventor: Isao Morita
  • Publication number: 20110206500
    Abstract: A variable capacity type turbocharger is provided including: a bearing housing which rotatably supports a turbine impeller; a turbine housing which has a scroll passageway formed therein to supply an exhaust gas to the turbine impeller; and an exhaust nozzle which changes a flow rate and a stream angle of the exhaust gas supplied from the scroll passageway to the turbine impeller, wherein the exhaust nozzle includes a pair of exhaust introduction walls forming a passageway of the exhaust gas and a plurality of nozzle vanes disposed between the pair of exhaust introduction walls and supported to be rotatable about the turbine impeller, and wherein each nozzle vane includes a high-pressure wall surface facing the scroll passageway, the bearing housing side of the high-pressure wall surface is provided to be closer to the turbine impeller than the turbine housing side thereof, and when the turbine impeller rotates, the nozzle vane moves toward the turbine housing or is pressed toward the turbine housing side of
    Type: Application
    Filed: November 5, 2009
    Publication date: August 25, 2011
    Inventors: Kenichi Nagao, Isao Morita, Satomi Unno, Hiroki Ono
  • Publication number: 20090232974
    Abstract: The present invention makes it possible to simplify the work of maintaining the covering performance of a covering layer by a method for maintaining a floor covering layer whereby the covering performance of a covering layer B that is formed on a floor (A) and covers the floor (A) can be maintained. In this method, the resin covering layer B having a thickness (T0) of 30 to 100 ?m is formed on the floor. The surface of the resin covering layer B is subjected to dry grinding without the use of a liquid by using grinding pads (6) and (7) provided with grinding surfaces (6a) and (7a) that move along one direction. The generated grindings are recovered, and a layering material (26) for the resin covering layer is then coated onto the resin covering layer (B) to restore the thickness (T1) of the resin covering layer (B), which has been reduced by grinding, to substantially an original thickness (T0).
    Type: Application
    Filed: October 28, 2005
    Publication date: September 17, 2009
    Applicant: Penguin Wax Co., Ltd.
    Inventors: Tadayoshi Fujimoto, Isao Morita, Katsuaki Namba
  • Patent number: 7155768
    Abstract: An electric-motored floor-surface polisher includes a pair of pads juxtaposed in the front and rear or lateral direction of an apparatus frame, each pad being slidably supported to the apparatus frame. A drive pulley coupled to an output shaft of an electric motor to be rotated therewith.
    Type: Grant
    Filed: August 13, 2003
    Date of Patent: January 2, 2007
    Assignee: Penguin Wax Co., Ltd.
    Inventors: Isao Morita, Yasuhiro Ueda
  • Publication number: 20040034954
    Abstract: An electric-motored floor-surface polisher includes a pair of pads juxtaposed in the front and rear or lateral direction of an apparatus frame, each pad being slidably supported to the apparatus frame. A drive pulley coupled to an output shaft of an electric motor to be rotated therewith.
    Type: Application
    Filed: August 13, 2003
    Publication date: February 26, 2004
    Applicant: Penguin Wax Co., Ltd.
    Inventors: Isao Morita, Yasuhiro Ueda
  • Publication number: 20030172480
    Abstract: A floor working machine includes a body frame (1), an electric drive unit (29), a pad unit including a first pad (21) and a second pad (21) having polishing surfaces (21a) for contacting a floor surface, the first pad and second pad being opposed to each other, and a pad control mechanism (50) for controlling the pad unit by using drive of the electric drive unit. The pad control mechanism (50) controls the first pad (21) and second pad (21) such that the first pad and second pad reciprocate, with the respective polishing surfaces (21a) contacting the floor surface, in a first direction (A) in which the first pad and second pad approach each other and in a second direction (B) in which the first pad and second pad move away from each other. A guiding device (23, 25) guides the first pad and second pad in reciprocating movement such that the first direction and second direction are linear and parallel to the floor surface.
    Type: Application
    Filed: July 26, 2002
    Publication date: September 18, 2003
    Applicant: Penguin Wax Co., Ltd.
    Inventors: Yasuhiro Ueda, Isao Morita, Hiroshi Suzuki
  • Patent number: 6285572
    Abstract: A method whereby a plurality of inverters for converting DC power outputted from a DC power supply, such as solar cells or fuel cells, to AC power are operated efficiently without being biased to particular inverters. The number of inverters to be run is determined in correspondence with at least one output value of the DC output or AC output, and the determined number of inverters are selected and made to run from among the plurality of inverters on the basis of a predetermined rule. In addition, a parallel-connected system is disclosed for enabling efficient and appropriate parallel-in operation by the use of inverters, with one of the inverters controlling the remaining inverters and effecting system interconnection protection.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: September 4, 2001
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Keigo Onizuka, Masaki Madenokouji, Isao Morita, Yasuhiro Makino
  • Patent number: 6082122
    Abstract: There is provided a calibration method of a detecting section which is provided on a substrate incorporated into a system interconnection generator and which detects by detecting means an object to be detected or an value of the object to be detected. The calibration method comprises the steps of prior to the substrate being incorporated into the system interconnection generator, measuring by the detecting section a reference value of the object to be detected by the detecting section; storing at least one of an error with respect to the reference value measured by the measuring step and the measured value of the reference value in association with the measurement result; and after the substrate being incorporated into the system interconnection generator, outputting the measurement result of the detecting section based on at least one of the error and the measured reference value, stored by the storing step in association with the measurement result.
    Type: Grant
    Filed: October 15, 1998
    Date of Patent: July 4, 2000
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Masaki Madenokouji, Keigo Onizuka, Isao Morita, Hisashi Tokizaki
  • Patent number: 6058035
    Abstract: After starting the input of a switching signal to a booster circuit whose boosting rate is changeable in accordance with the duty ratio of the inputted switching signal and calculating the output power of an inverter circuit, which is connected to the subsequent stage of the booster circuit, from the output current of the inverter circuit, the target voltage after boosting by the booster circuit is obtained based on the output power. If the actual output voltage of the booster circuit is lower than the target voltage, the duty ratio of the above switching signal is increased, and if higher, the duty ratio of the above switching signal is decreased.
    Type: Grant
    Filed: March 8, 1999
    Date of Patent: May 2, 2000
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Masaki Madenokouji, Keigo Onizuka, Hisashi Tokizaki, Isao Morita
  • Patent number: 6046919
    Abstract: In order to obtain a solar power generating device capable of effectively using power generated by a solar cell, the virtual optimum operating voltage, the MPPT minimum voltage, the MPPT maximum voltage, and the low and high voltage change width switching voltages used when MPPT control is carried out are calculated on the basis of the output voltage of a solar panel immediately before the startup of the inverter circuit in the solar power generating device and the MPPT control is carried out on the basis of each of the calculated voltage values.
    Type: Grant
    Filed: March 24, 1999
    Date of Patent: April 4, 2000
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Masaki Madenokouji, Keigo Onizuka, Isao Morita, Hisashi Tokizaki
  • Patent number: 5930076
    Abstract: A magnet is provided on the inner circumferential surface of a hub rotatable about a central axis C of the motor, and a stator is arranged inside the inner circumferential surface of the hub to oppose the magnet. The stator core of the stator is formed by stacking substantially annular, plate-shaped core forming members, and has an annular portion arranged to be coaxial with the central axis, a plurality of winding portions projecting from the annular portion radially, and pole portions formed on the extending ends of the respective winding portions and opposing the magnet. Each winding portion is squeezed in the stacking direction by plastic formation such that its thickness is smaller than those of the annular portion and pole portion. A coil is wound on each squeezed winding portion.
    Type: Grant
    Filed: June 11, 1998
    Date of Patent: July 27, 1999
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Isao Morita
  • Patent number: 5892635
    Abstract: A CPU instructs a VCM driver, a spindle motor driver and a servo data reading or writing circuit, to writing servo data for error detection at any of default rotation frequencies stored in a memory. A positioning error signal analyzer detects a positioning error from the written servo data for error detection, and CPU determines an optimal disk rotation frequency from this positioning error.
    Type: Grant
    Filed: September 25, 1996
    Date of Patent: April 6, 1999
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Isao Morita
  • Patent number: 5798583
    Abstract: A magnet is provided on the inner circumferential surface of a hub rotatable about a central axis C of the motor, and a stator is arranged inside the inner circumferential surface of the hub to oppose the magnet. The stator core of the stator is formed by stacking substantially annular, plate-shaped core forming members, and has an annular portion arranged to be coaxial with the central axis, a plurality of winding portions projecting from the annular portion radially, and pole portions formed on the extending ends of the respective winding portions and opposing the magnet. Each winding portion is squeezed in the stacking direction by plastic formation such that its thickness is smaller than those of the annular portion and pole portion. A coil is wound on each squeezed winding portion.
    Type: Grant
    Filed: June 2, 1997
    Date of Patent: August 25, 1998
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Isao Morita