Patents by Inventor Masashi Nomura

Masashi Nomura 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).

  • Publication number: 20210148376
    Abstract: A blower includes an impeller rotatable about a central axis and a motor driving the impeller. The impeller includes a first impeller, and a second impeller connected to the first impeller. The first impeller includes a base and first blades arranged in a circumferential direction. The base includes a cup portion of which an axially upper end is closed and a flange extending radially outward from an axially lower end of the cup portion. The second impeller includes a shroud with an annular or substantially annular shape about the central axis and axially opposes an upper surface of the flange, and second blades arranged in the circumferential direction. Each first blade protrudes axially upward from the flange. Each second blade protrudes axially downward from the shroud.
    Type: Application
    Filed: May 18, 2018
    Publication date: May 20, 2021
    Inventors: Shingo YOSHINO, Masashi NOMURA, Shinsuke HAMANO
  • Publication number: 20210132016
    Abstract: A gas sensor includes a gas sensor element for detecting the concentration of a specific gas in a gas under measurement, a tubular housing having an opening, a sealing member closing the opening, and a heat dissipating member having a rear end located at the same position or forward of the rear end of the housing. The heat dissipating member reduces heat transferred from the forward end side of the gas sensor to the sealing member and includes a connection portion connected to the housing, and a main portion extending rearward from the connection portion such that a gap is formed between the main portion and the housing. The main portion has heat dissipating openings for establishing communication between the gap and a space on the outer circumferential side of the heat dissipating member. The heat dissipating openings are formed on the rear end side of the main portion.
    Type: Application
    Filed: October 20, 2020
    Publication date: May 6, 2021
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Daisuke MATSUYAMA, Masahiro ASAI, Masashi NOMURA, Yuto INOSE, Takehiro Oba
  • Publication number: 20210072177
    Abstract: A gas sensor including: a sensor element extending in an axial direction; a metal shell surrounding and supporting the sensor element; an exterior tube that is tubular and is mounted to a rear end of the metal shell; a metal terminal including a first end connected to a lead wire and a second end electrically connected to the sensor element; a separator that is tubular and is disposed in the exterior tube and contains the metal terminal and the sensor element; and a holder being in contact with the separator in the axial direction. The holder includes ribs formed in a frontward face or a rearward face of the holder and arranged at predetermined intervals in a circumferential direction. Each of the ribs occupies a region having a length equal to or greater than a thickness of the holder, as viewed in the axial direction.
    Type: Application
    Filed: February 8, 2019
    Publication date: March 11, 2021
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Masana OKAI, Takehiro OBA, Daisuke TAHIRA, Masashi NOMURA
  • Publication number: 20200292485
    Abstract: A gas sensor (100) extending in an axial direction AX including: a gas sensor element (120) which detects the concentration of a specific gas in a gas under measurement; a tubular metallic shell (110) having a polygonal tool engagement portion (110B) surrounding the gas sensor element (120); a tubular outer tube (103) which extends rearward from the metallic shell (110), surrounds the gas sensor element (120), and has an opening (103E) at a rear end thereof; a sealing member (191) which seals the opening (103E); and a tubular heat dissipating member (104) which surrounds the outer tube (103) and reduces the amount of heat transferred from the forward end side of the gas sensor (100) through the outer tube (103) to the sealing member (191). The maximum diameter D1 of the heat dissipating member (104) is equal to or less than the opposite side dimension D2 of the tool engagement portion (110B).
    Type: Application
    Filed: February 28, 2020
    Publication date: September 17, 2020
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Daisuke MATSUYAMA, Masahiro ASAI, Masashi NOMURA, Yuto INOSE
  • Publication number: 20190199172
    Abstract: A motor includes a rotary portion including a shaft with a central axis. A bearing portion is radially outward of and rotatably supporting the shaft. A stationary portion includes a stator including a stator core radially outward of the housing; and an insulator at least partially covering the stator core. The bearing portion includes a sleeve bearing containing a lubricating oil; and a housing radially outward of the sleeve bearing. The shaft holds a first member above the sleeve bearing and extending radially outward from the shaft. The housing holds a second member above the sleeve bearing and below the first member and extending radially inward from the housing. The first and second members face each other with a gap therebetween. The second member includes a first hole surrounding the shaft; and at least one second hole radially outward of the first hole.
    Type: Application
    Filed: November 2, 2018
    Publication date: June 27, 2019
    Inventors: Shingo YOSHINO, Tomoaki ANDO, Masashi NOMURA, Shinsuke HAMANO
  • Publication number: 20190199171
    Abstract: A motor includes a rotary portion including a shaft having a center on a vertically extending central axis. A bearing portion rotatably supports the shaft. A stationary portion includes a stator. The bearing portion is radially outward of the shaft and includes a sleeve bearing that contains a lubricating oil; and a housing radially outward of the sleeve bearing. The stator includes a stator core that is radially outward of the housing; and an insulator that covers at least part of the stator core. The insulator includes an upper insulating portion that covers an upper face of the stator core; a connecting portion that extends radially inward from the upper insulating portion; and an insulator inclined portion that is inclined in a direction away from the central axis, away from the connecting portion.
    Type: Application
    Filed: November 2, 2018
    Publication date: June 27, 2019
    Inventors: Shingo YOSHINO, Tomoaki ANDO, Masashi NOMURA, Shinsuke HAMANO
  • Patent number: 9748814
    Abstract: Block components having a conductive property are mounted on lands for connection to a harness so as to increase the height of the lands on a circuit board which is to be connected to windings.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: August 29, 2017
    Assignee: Sanyo Denki Co., Ltd.
    Inventors: Katsumichi Ishihara, Masashi Nomura, Tomoko Hayashi
  • Publication number: 20170014873
    Abstract: A substrate processing system is constituted by a cleaning unit, a plurality of processing liquid supply units and a substrate processing apparatus. The cleaning unit supplies a first cleaning liquid to a processing unit of a processing liquid supply unit during cleaning of a pipe. The processing liquid supply unit stores the first cleaning liquid supplied from the cleaning unit in the processing liquid tank, and then supplies the first cleaning liquid in a processing liquid tank to the processing unit of the substrate processing apparatus through the pipe. The cleaning unit prepares a second cleaning liquid concurrently with cleaning of the pipe by the first cleaning liquid, and supplies the prepared second cleaning liquid to the processing liquid tank.
    Type: Application
    Filed: February 26, 2015
    Publication date: January 19, 2017
    Inventors: Ayumi HIGUCHI, Eri FUJITA, Hiroshi YOSHIDA, Masashi NOMURA
  • Publication number: 20140354117
    Abstract: Block components having a conductive property are mounted on lands for connection to a harness so as to increase the height of the lands on a circuit board which is to be connected to windings.
    Type: Application
    Filed: May 29, 2014
    Publication date: December 4, 2014
    Applicant: Sanyo Denki Co., Ltd.
    Inventors: Katsumichi Ishihara, Masashi Nomura, Tomoko Hayashi
  • Patent number: 8264108
    Abstract: A stator includes an annular core back portion, a plurality of teeth extending radially outward from an outer circumference of the core back portion, and coils. A cylindrical portion of a housing includes a contact portion and a coming-off preventing portion arranged above the contact portion on an outer circumference of the cylindrical portion. The core back portion includes a small-diameter opening defining portion and a large-diameter opening defining portion arranged above the small-diameter opening defining portion. The cylindrical portion is arranged radially inward of the core back portion. The stator is held by the cylindrical portion with a lower surface of the core back portion arranged in contact with the contact portion and an upper surface of the small-diameter opening defining portion arranged in contact with the coming-off preventing portion. A bearing member is arranged radially inside the large-diameter opening defining portion and above the coming-off preventing portion.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: September 11, 2012
    Assignee: Nidec Corporation
    Inventors: Masashi Nomura, Yukinobu Shiraishi
  • Patent number: 7944103
    Abstract: A fixation portion of an attachment plate is fixed onto an upper surface of a flange portion of a housing. In a cylindrical retentive portion of the housing, there is formed an expanded diameter portion which is continuous to the flange portion. There is disposed a ball bearing in the expanded diameter portion. Formed integrally with the flange portion is a fitting portion such that the fitting portion is continuous to the expanded diameter portion.
    Type: Grant
    Filed: May 20, 2008
    Date of Patent: May 17, 2011
    Assignee: Nidec Corporation
    Inventors: Masashi Nomura, Masamichi Nagata
  • Publication number: 20110006634
    Abstract: A stator includes an annular core back portion, a plurality of teeth extending radially outward from an outer circumference of the core back portion, and coils. A cylindrical portion of a housing includes a contact portion and a coming-off preventing portion arranged above the contact portion on an outer circumference of the cylindrical portion. The core back portion includes a small-diameter opening defining portion and a large-diameter opening defining portion arranged above the small-diameter opening defining portion. The cylindrical portion is arranged radially inward of the core back portion. The stator is held by the cylindrical portion with a lower surface of the core back portion arranged in contact with the contact portion and an upper surface of the small-diameter opening defining portion arranged in contact with the coming-off preventing portion. A bearing member is arranged radially inside the large-diameter opening defining portion and above the coming-off preventing portion.
    Type: Application
    Filed: July 1, 2010
    Publication date: January 13, 2011
    Applicant: NIDEC CORPORATION
    Inventors: Masashi NOMURA, Yukinobu SHIRAISHI
  • Patent number: 7732957
    Abstract: A brushless motor includes a motor drive unit, a circuit board arranged to drive the motor drive unit having through holes formed in the upper surface and the lower surface; and a motor attachment plate including a plate-shaped base portion and plate-shaped fixing portions to fix the circuit board in place. Herein, each fixing portion includes a support portion for making contact with a surface of the circuit board; an arm portion bent in a direction that is substantially parallel to the rotational axis; and a protrusion portion inserted into a through hole, having at least one overhang extension protruding from the through hole. The overhang extension of the protrusion is bent in a direction that is substantially perpendicular to the rotational axis.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: June 8, 2010
    Assignee: Nidec Corporation
    Inventors: Masashi Nomura, Tomoyuki Tanisugi, Masamichi Nagata
  • Patent number: 7550884
    Abstract: A cutout portion is formed at an outer peripheral side of a stator placing portion provided in a bearing bush for placing a core back portion of a stator. A connecting wire portion of a coil of the stator is inserted through a gap formed between the cut-out portion and the core back portion. The connecting wire portion is, therefore, prevented from being caught between a lower surface of the core back portion and an upper surface of the stator placing portion when the stator is secured on the stator placing portion by a first fixing member.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: June 23, 2009
    Assignee: Nidec Corporation
    Inventors: Masashi Nomura, Masamichi Nagata
  • Publication number: 20090072638
    Abstract: A brushless motor includes a motor drive unit, a circuit board arranged to drive the motor drive unit having through holes formed in the upper surface and the lower surface; and a motor attachment plate including a plate-shaped base portion and plate-shaped fixing portions to fix the circuit board in place. Herein, each fixing portion includes a support portion for making contact with a surface of the circuit board; an arm portion bent in a direction that is substantially parallel to the rotational axis; and a protrusion portion inserted into a through hole, having at least one overhang extension protruding from the through hole. The overhang extension of the protrusion is bent in a direction that is substantially perpendicular to the rotational axis.
    Type: Application
    Filed: September 18, 2008
    Publication date: March 19, 2009
    Applicant: NIDEC CORPORATION
    Inventors: Masashi NOMURA, Tomoyuki TANISUGI
  • Publication number: 20080290747
    Abstract: A fixation portion of an attachment plate is fixed onto an upper surface of a flange portion of a housing. In a cylindrical retentive portion of the housing, there is formed an expanded diameter portion which is continuous to the flange portion. There is disposed a ball bearing in the expanded diameter portion. Formed integrally with the flange portion is a fitting portion such that the fitting portion is continuous to the expanded diameter portion.
    Type: Application
    Filed: May 20, 2008
    Publication date: November 27, 2008
    Applicant: NIDEC CORPORATION
    Inventors: Masashi NOMURA, Masamichi NAGATA
  • Publication number: 20080247689
    Abstract: A motor includes a rotor unit, a stator unit, and a bearing mechanism. The bearing mechanism is constituted with a bushing having a hollow substantially cylindrical shape and formed by pressing a metal plate, a first bearing and a second bearing retained radially inside of the bushing, and a spacer arranged axially between the first bearing and the second bearing to determine an axial distance therebetween.
    Type: Application
    Filed: April 6, 2007
    Publication date: October 9, 2008
    Applicant: NIDEC CORPORATION
    Inventors: Masashi Nomura, Masaaki Mano
  • Publication number: 20070273238
    Abstract: A cutout portion is formed at an outer peripheral side of a stator placing portion provided in a bearing bush for placing a core back portion of a stator. A connecting wire portion of a coil of the stator is inserted through a gap formed between the cut-out portion and the core back portion. The connecting wire portion is, therefore, prevented from being caught between a lower surface of the core back portion and an upper surface of the stator placing portion when the stator is secured on the stator placing portion by a first fixing member.
    Type: Application
    Filed: May 24, 2007
    Publication date: November 29, 2007
    Applicant: NIDEC CORPORATION
    Inventors: Masashi NOMURA, Masamichi NAGATA
  • Patent number: D533422
    Type: Grant
    Filed: May 18, 2006
    Date of Patent: December 12, 2006
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Tomoaki Ino, Taro Mochida, Masashi Nomura, Satoshi Fujii
  • Patent number: D545759
    Type: Grant
    Filed: May 18, 2006
    Date of Patent: July 3, 2007
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Tomoaki Ino, Taro Mochida, Masashi Nomura