Patents by Inventor Nobuyuki Sueyoshi

Nobuyuki Sueyoshi 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: 11374478
    Abstract: A stepping motor has a relationship between an outer diameter of a rotor and an outer diameter of a bearing made of magnetic material that can be adjusted appropriately so as to impart magnetic attractive force to the bearing, the stepping motor including a rotor 400 made of a permanent magnet, a stator 500 including multiple pole teeth 223, 243, 323 and 343 extending in an axial direction of the rotor arranged at an outer circumferential side of the rotor 400, a bearing 250 rotatably supporting one end portion in the axial direction of the rotor 400, and a bearing 260 rotatably supporting the other end portion in the axial direction of the rotor 400.
    Type: Grant
    Filed: August 6, 2020
    Date of Patent: June 28, 2022
    Assignee: MINEBEA MITSUMI Inc.
    Inventors: Nobuyuki Sueyoshi, Mitsuo Kinoshita
  • Patent number: 11283339
    Abstract: A stepping motor has a relationship between an outer diameter of a rotor and an outer diameter of a bearing made of magnetic material that can be adjusted appropriately so as to impart magnetic attractive force to the bearing, the stepping motor including a rotor 400 made of a permanent magnet, a stator including multiple pole teeth 223, 243, 323 and 343 extending in an axial direction of the rotor 400 arranged at an outer circumferential side of the rotor 400, a bearing 250 rotatably supporting one end portion in the axial direction of the rotor 400, and a bearing 260 rotatably supporting the other end portion in the axial direction of the rotor 400.
    Type: Grant
    Filed: August 6, 2020
    Date of Patent: March 22, 2022
    Assignee: MINEBEA MITSUMI INC.
    Inventors: Nobuyuki Sueyoshi, Mitsuo Kinoshita
  • Patent number: 11146142
    Abstract: Noise caused by a gap between a rotor and a plate can be suppressed even when there are dimensional variations in members or assembly states. In a configuration of a stepping motor including front side and end side stator assemblies (200, 300), a rotor (400) provided with a rotor member (402) and a shaft (403) that are accommodated in the stator assemblies (200, 300), and a front plate (210) and an end plate (310) that are arranged on both sides of the stator assemblies (200, 300) in an axial direction, and are configured to couple the stator assemblies (200, 300), a projection (700) in an annular shape is provided on a surface of the front plate (210) facing the rotor member (402) to protrude toward the rotor member (402), a coil spring (800) that is interposed between the front plate (210) and the rotor member (402) is accommodated in the inner side of the projection (700), and the rotor (400) is urged toward the end plate (310) by the coil spring to be elastically pressed against the end plate (310).
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: October 12, 2021
    Assignee: MINEBEA MITSUMI INC.
    Inventors: Suguru Okura, Nobuyuki Sueyoshi, Kazuo Muramatsu, Shoji Yoshitomi, Hiroaki Fujii
  • Publication number: 20210044193
    Abstract: A stepping motor has a relationship between an outer diameter of a rotor and an outer diameter of a bearing made of magnetic material that can be adjusted appropriately so as to impart magnetic attractive force to the bearing, the stepping motor including a rotor 400 made of a permanent magnet, a stator including multiple pole teeth 223, 243, 323 and 343 extending in an axial direction of the rotor 400 arranged at an outer circumferential side of the rotor 400, a bearing 250 rotatably supporting one end portion in the axial direction of the rotor 400, and a bearing 260 rotatably supporting the other end portion in the axial direction of the rotor 400.
    Type: Application
    Filed: August 6, 2020
    Publication date: February 11, 2021
    Inventors: Nobuyuki SUEYOSHI, Mitsuo KINOSHITA
  • Publication number: 20210044194
    Abstract: A stepping motor has a relationship between an outer diameter of a rotor and an outer diameter of a bearing made of magnetic material that can be adjusted appropriately so as to impart magnetic attractive force to the bearing, the stepping motor including a rotor 400 made of a permanent magnet, a stator 500 including multiple pole teeth 223, 243, 323 and 343 extending in an axial direction of the rotor arranged at an outer circumferential side of the rotor 400, a bearing 250 rotatably supporting one end portion in the axial direction of the rotor 400, and a bearing 260 rotatably supporting the other end portion in the axial direction of the rotor 400.
    Type: Application
    Filed: August 6, 2020
    Publication date: February 11, 2021
    Inventors: Nobuyuki SUEYOSHI, Mitsuo KINOSHITA
  • Publication number: 20200014279
    Abstract: Noise caused by a gap between a rotor and a plate can be suppressed even when there are dimensional variations in members or assembly states. In a configuration of a stepping motor including front side and end side stator assemblies (200, 300), a rotor (400) provided with a rotor member (402) and a shaft (403) that are accommodated in the stator assemblies (200, 300), and a front plate (210) and an end plate (310) that are arranged on both sides of the stator assemblies (200, 300) in an axial direction, and are configured to couple the stator assemblies (200, 300), a projection (700) in an annular shape is provided on a surface of the front plate (210) facing the rotor member (402) to protrude toward the rotor member (402), a coil spring (800) that is interposed between the front plate (210) and the rotor member (402) is accommodated in the inner side of the projection (700), and the rotor (400) is urged toward the end plate (310) by the coil spring to be elastically pressed against the end plate (310).
    Type: Application
    Filed: March 2, 2018
    Publication date: January 9, 2020
    Applicant: MINEBEA MITSUMI Inc.
    Inventors: Suguru OKURA, Nobuyuki SUEYOSHI, Kazuo MURAMATSU, Shoji YOSHITOMI, Hiroaki FUJII
  • Patent number: 9787234
    Abstract: A drive controller of an instrument controls a stepping motor to rotate a pointer of the instrument attached to a rotation shaft of the stepping motor, the pointer rotatable between a zero scale position and a maximum scale position. The drive controller controls the stepping motor to perform a sweeping operation in which the pointer is swung from the zero scale position to the maximum scale position and returned back to the zero scale position, wherein the drive controller controls the stepping motor, during the sweeping operation, to accelerate to a predetermined speed by outputting a rated torque signal to the stepping motor and controls the stepping motor to rotate at the predetermined speed by outputting a decreased torque signal to the stepping motor, the decreased torque signal being lower than the rated torque signal.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: October 10, 2017
    Assignee: Minebea Co., Ltd.
    Inventors: Sakae Fujitani, Nobuyuki Sueyoshi
  • Publication number: 20160301343
    Abstract: A drive controller of an instrument controls a stepping motor to rotate a pointer of the instrument attached to a rotation shaft of the stepping motor, the pointer rotatable between a zero scale position and a maximum scale position. The drive controller controls the stepping motor to perform a sweeping operation in which the pointer is swung from the zero scale position to the maximum scale position and returned back to the zero scale position, wherein the drive controller controls the stepping motor, during the sweeping operation, to accelerate to a predetermined speed by outputting a rated torque signal to the stepping motor and controls the stepping motor to rotate at the predetermined speed by outputting a decreased torque signal to the stepping motor, the decreased torque signal being lower than the rated torque signal.
    Type: Application
    Filed: April 7, 2016
    Publication date: October 13, 2016
    Inventors: Sakae FUJITANI, Nobuyuki SUEYOSHI
  • Patent number: 9082546
    Abstract: A method of magnetizing into a permanent magnet comprises placing magnetizing magnetic field applying means to be adjacent to an object to be magnetized into the permanent magnet, and continuing to apply a magnetizing magnetic field to the object by the magnetizing magnetic field applying means while cooling the object from a temperature of its Curie point or above to a temperature of below the Curie point.
    Type: Grant
    Filed: June 22, 2007
    Date of Patent: July 14, 2015
    Assignee: Minebea Co., Ltd.
    Inventors: Haruhiro Komura, Mikio Kitaoka, Ikuo Ohashi, Teruo Kiyomiya, Sachiko Shinmura, Nobuyuki Sueyoshi
  • Publication number: 20080122565
    Abstract: A method of magnetizing into a permanent magnet comprises placing magnetizing magnetic field applying means to be adjacent to an object to be magnetized into the permanent magnet, and continuing to apply a magnetizing magnetic field to the object by the magnetizing magnetic field applying means while cooling the object from a temperature of its Curie point or above to a temperature of below the Curie point.
    Type: Application
    Filed: June 22, 2007
    Publication date: May 29, 2008
    Applicant: FDK CORPORATION
    Inventors: Haruhiro Komura, Mikio Kitaoka, Ikuo Ohashi, Teruo Kiyomiya, Sachiko Shinmura, Nobuyuki Sueyoshi
  • Publication number: 20060109565
    Abstract: A front lens group 1 and a rear lens group 2 having a diameter of about 5 mm held inside a cylindrical body 5 are capable of movement in the forward and backward directions via a front group movable body 3 and a rear group movable body 4, respectively. An image taking element such as a CCD is arranged at a prescribed position behind the cylindrical body. By setting the distance from each lens group to the CCD and the distance between both lens groups, an image is formed at a prescribed zoom on the CCD. From the 1× base state when the zoom magnification is made ?×??×??×, the positional relationship between the front lens group and the rear lens group becomes as shown in FIG. 1(b)˜(d). The two kinds of zoom magnification 1× and ?× can be switched by fixing the front lens group and moving only the rear lens group back and forth between positions.
    Type: Application
    Filed: October 20, 2003
    Publication date: May 25, 2006
    Applicant: FDK Corporation
    Inventors: Kazuyuki Watanabe, Haruhiro Komura, Shinya Yamauchi, Tetsutaka Yamamoto, Nobuyuki Sueyoshi, Masatoshi Kazimoto