Patents by Inventor Seiji Ishigaki

Seiji Ishigaki 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: 10012294
    Abstract: A gear drive device includes a first gear, and a second gear that meshes with the first gear to allow torque transmission. At least one of the first gear and the second gear includes a fan-type gear. The first gear and the second gear each include a guide portion, and the guide portion is configured to position the first gear and the second gear in a gear rotation direction upon installation thereof.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: July 3, 2018
    Assignee: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Yuki Kubo, Seiji Ishigaki
  • Publication number: 20170276219
    Abstract: A gear drive device includes a first gear, a second gear that meshes with the first gear to allow torque transmission, and a biasing member that applies rotational torque in one direction to the first gear or the second gear. The first gear and the second gear are brought into contact at a contacting tooth surface thereof by the biasing member. At least one of the first gear and the second gear includes a non-contacting tooth surface that is on an opposite side of the contacting tooth surface and partially removed.
    Type: Application
    Filed: March 17, 2017
    Publication date: September 28, 2017
    Inventors: Yuki KUBO, Seiji ISHIGAKI
  • Publication number: 20170276218
    Abstract: A gear drive device includes a first gear, and a second gear that meshes with the first gear to allow torque transmission. At least one of the first gear and the second gear includes a fan-type gear. The first gear and the second gear each include a guide portion, and the guide portion is configured to position the first gear and the second gear in a gear rotation direction upon installation thereof.
    Type: Application
    Filed: March 15, 2017
    Publication date: September 28, 2017
    Inventors: Yuki KUBO, Seiji ISHIGAKI
  • Patent number: 9488988
    Abstract: An operating device includes a push operation mechanism that allows a push operation of an operation unit, a tactile feeling presenting unit including a drive transmission mechanism for presenting an operational feeling by driving the operation unit via the push operation mechanism, a detection unit that detects a motion of the operation unit, and a drive control unit that intermittently drives the operation unit by a drive control signal that is generated based on an activation pulse signal and an advance vibration pulse signal that includes a prescribed number of pulses and a voltage smaller than that of the activation pulse signal.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: November 8, 2016
    Assignee: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Seiji Ishigaki, Konomu Abe
  • Publication number: 20140244041
    Abstract: An operating device includes a push operation mechanism that allows a push operation of an operation unit, a tactile feeling presenting unit including a drive transmission mechanism for presenting an operational feeling by driving the operation unit via the push operation mechanism, a detection unit that detects a motion of the operation unit, and a drive control unit that intermittently drives the operation unit by a drive control signal that is generated based on an activation pulse signal and an advance vibration pulse signal that includes a prescribed number of pulses and a voltage smaller than that of the activation pulse signal.
    Type: Application
    Filed: February 7, 2014
    Publication date: August 28, 2014
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Seiji ISHIGAKI, Konomu ABE
  • Patent number: 8324853
    Abstract: A vehicle wiper controller includes a wiper drive circuit which drives a wiper. An operation switch is manipulated in a plurality of manipulation directions or to a plurality of operation mode positions when a manipulation force is applied thereto. A wiper operation control unit electronically controls the operation of the wiper and sets the wiper to an operation mode corresponding to the manipulation of the operation switch. A control signal hold circuit, discrete from the wiper operation control unit, transmits a control signal to the wiper drive circuit when the operation switch is manipulated in a predetermined first manipulation direction or when the operation switch is manipulated to a predetermined first operation mode position. The control signal hold circuit sets a hold state for holding the transmission state of the control signal.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: December 4, 2012
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventors: Seiji Ishigaki, Hitoshi Muraki, Masaki Yoshino, Yoshihisa Hirano, Kenji Iwasaki, Kunihiko Ikekame
  • Patent number: 7902468
    Abstract: A small click generating member is mounted on a yoke, and a large click generating member is rotatably mounted on an operating shaft. A plunger case is relatively rotatably mounted on the operating shaft, and large and small click pieces are mounted on the plunger case. An electromagnet is mounted on the yoke, and a plunger magnetic body attractable to the electromagnet is mounted on the plunger case. A magnet is mounted to cover the yoke. By changing over the supply of electricity to the electromagnet among a non-electricity-supply state, a backward connection electricity supply state and a forward connection electricity supply state, a generated coil magnetic field and a magnetic field of the magnet are applied in a cooperative manner, a magnetic circuit generated in the yoke can be changed over, and clicks are changed over among large click feeling, small click feeling and a fixed state.
    Type: Grant
    Filed: February 5, 2008
    Date of Patent: March 8, 2011
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventors: Masahiko Miyata, Seiji Ishigaki
  • Patent number: 7804036
    Abstract: A control switch is equipped with a detent mechanism that generates a click feeling in a dial knob as a result of a detent piece of a plunger member gets over detent crests of a detent crest member. A stopper is provided in the plunger member, and the position of vertical motion of the stopper is switched by means of a rectilinear actuator, thereby switching rotational operation of the dial knob between an enabled state and a disabled state.
    Type: Grant
    Filed: February 19, 2008
    Date of Patent: September 28, 2010
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventors: Seiji Ishigaki, Terukazu Hiroe
  • Patent number: 7767916
    Abstract: A switch device that adjusts tactile sensation of a switch knob without control delay. The switch device includes a knob operated to switch an actuation state of an apparatus. A click mechanism is connected to the knob and includes a recess and a projection. Engagement of the projection and the recess provides a tactile sensation to a person operating the knob when the knob is operated. An adjustment mechanism generates a magnetic field to adjust tactile sensation of the click mechanism.
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: August 3, 2010
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventors: Masayuki Kurihara, Seiji Ishigaki, Masahiko Miyata
  • Patent number: 7732724
    Abstract: A detent crest member is integrally rotatably mounted on a dial knob. On the other hand, on a peripheral surface of a plunger mounting member which is rotatably operated using a motor, a plurality of plunger members which generates clicks in a dial knob together with the detent crest member is mounted. In changing over click feeling, the motor is rotated thus selectively bringing one of the plunger members mounted on the plunger mounting member into resilient contact with concave/convex patterns of the detent crest member which form the pair with one plunger member.
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: June 8, 2010
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventors: Kazuya Otani, Seiji Ishigaki
  • Patent number: 7714242
    Abstract: A switch device including a switch operation shaft movable between a plurality of operation positions for setting a control amount for an apparatus. A follower is driven to follow the movement of the switch operation shaft. An attraction member generates magnetic force to attract the follower so that the follower becomes immovable and to hold the switch operation shaft at a single operation position.
    Type: Grant
    Filed: June 6, 2007
    Date of Patent: May 11, 2010
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventors: Seiji Ishigaki, Masahiko Miyata, Tomio Yamada, Terukazu Hiroe
  • Publication number: 20100024148
    Abstract: A vehicle wiper controller includes a wiper drive circuit which drives a wiper. An operation switch is manipulated in a plurality of manipulation directions or to a plurality of operation mode positions when a manipulation force is applied thereto. A wiper operation control unit electronically controls the operation of the wiper and sets the wiper to an operation mode corresponding to the manipulation of the operation switch. A control signal hold circuit, discrete from the wiper operation control unit, transmits a control signal to the wiper drive circuit when the operation switch is manipulated in a predetermined first manipulation direction or when the operation switch is manipulated to a predetermined first operation mode position. The control signal hold circuit sets a hold state for holding the transmission state of the control signal.
    Type: Application
    Filed: July 22, 2009
    Publication date: February 4, 2010
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Seiji Ishigaki, Hitoshi Muraki, Masaki Yoshino, Yoshihisa Hirano, Kenji Iwasaki, Kunihiko Ikekame
  • Patent number: 7619376
    Abstract: A detent mechanism includes: a control member to be operated rotationally; a rotary member including a pair of magnetic poles adapted to rotate in conjunction with the control member; a plurality of electromagnets provided along a rotational path of the magnetic poles of the rotary member; and a detent controller that has a detent energization pattern in which a current energization direction and an energization amount are determined for the plurality of electromagnets. The detent controller gives a detent in operation of the control member by applying an electromagnetic force between at least one of the plurality of electromagnets and the rotary member by energization control for the plurality of electromagnets according to the detent energization pattern.
    Type: Grant
    Filed: May 17, 2007
    Date of Patent: November 17, 2009
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventors: Terukazu Hiroe, Masahiko Miyata, Seiji Ishigaki
  • Patent number: 7505279
    Abstract: A portable device that resists deformation caused by an external force while remaining water resistant. The portable device includes a case, which is made of a flexible material. A battery compartment is formed in the case. A separable portion is arranged in the part of the case corresponding to the battery compartment. Part of the case is bent to open the separable portion and expose the battery compartment from the case.
    Type: Grant
    Filed: January 28, 2004
    Date of Patent: March 17, 2009
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventors: Kiyokazu Ohtaki, Seiji Ishigaki, Daisuke Kawamura, Masayuki Kawamura
  • Publication number: 20080197004
    Abstract: A control switch is equipped with a detent mechanism that generates a click feeling in a dial knob as a result of a detent piece of a plunger member gets over detent crests of a detent crest member. A stopper is provided in the plunger member, and the position of vertical motion of the stopper is switched by means of a rectilinear actuator, thereby switching rotational operation of the dial knob between an enabled state and a disabled state.
    Type: Application
    Filed: February 19, 2008
    Publication date: August 21, 2008
    Inventors: Seiji Ishigaki, Terukazu Hiroe
  • Publication number: 20080190752
    Abstract: A small click generating member is mounted on a yoke, and a large click generating member is rotatably mounted on an operating shaft. A plunger case is relatively rotatably mounted on the operating shaft, and large and small click peaces are mounted on the plunger case. An electromagnet is mounted on the yoke, and a plunger magnetic body attractable to the electromagnet is mounted on the plunger case. A magnet is mounted to cover the yoke. By changing over the supply of electricity to the electromagnet among a non-electricity-supply state, a backward connection electricity supply state and a forward connection electricity supply state, a generated coil magnetic field and a magnetic field of the magnet are applied in a cooperative manner, a magnetic circuit generated in the yoke can be changed over, and clicks are changed over among large click feeling, small click feeling and a fixed state.
    Type: Application
    Filed: February 5, 2008
    Publication date: August 14, 2008
    Applicant: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventors: Masahiko Miyata, Seiji Ishigaki
  • Publication number: 20080185272
    Abstract: A detent crest member is integrally rotatably mounted on a dial knob. On the other hand, on a peripheral surface of a plunger mounting member which is rotatably operated using a motor, a plurality of plunger members which generates clicks in a dial knob together with the detent crest member is mounted. In changing over click feeling, the motor is rotated thus selectively bringing one of the plunger members mounted on the plunger mounting member into resilient contact with concave/convex patterns of the detent crest member which form the pair with one plunger member.
    Type: Application
    Filed: January 30, 2008
    Publication date: August 7, 2008
    Inventors: Kazuya Otani, Seiji Ishigaki
  • Publication number: 20080173112
    Abstract: A shaft of an operating member is provided with a rotation detention receiving member having a substantially V-shaped concave portion. A detention giving unit includes a coil spring of a steel wire and a pressing member and presses the pressing member against the concave portion of the rotation detention receiving member to give rotation detention thereto. An electromagnet is arranged on a device base. A rotary encoder is attached to the shaft. Of the rotation detention receiving member and the detention giving unit, as regards the rotation detention receiving member is rotatable integrally to the operating member; and as regards the detention giving unit, while the electromagnet is de-energized, it is rotated integrally to the operating member whereas while the electromagnet is de-energized, it is attracted by the electromagnet so that it is fixed in a non-rotating state.
    Type: Application
    Filed: January 17, 2008
    Publication date: July 24, 2008
    Applicant: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventors: Terukazu Hiroe, Masahiko Miyata, Seiji Ishigaki
  • Publication number: 20080000762
    Abstract: A switch device that adjusts tactile sensation of a switch knob without control delay. The switch device includes a knob operated to switch an actuation state of an apparatus. A click mechanism is connected to the knob and includes a recess and a projection. Engagement of the projection and the recess provides a tactile sensation to a person operating the knob when the knob is operated. An adjustment mechanism generates a magnetic field to adjust tactile sensation of the click mechanism.
    Type: Application
    Filed: June 11, 2007
    Publication date: January 3, 2008
    Inventors: Masayuki Kurihara, Seiji Ishigaki, Masahiko Miyata
  • Publication number: 20070284233
    Abstract: A switch device including a switch operation shaft movable between a plurality of operation positions for setting a control amount for an apparatus. A follower is driven to follow the movement of the switch operation shaft. An attraction member generates magnetic force to attract the follower so that the follower becomes immovable and to hold the switch operation shaft at a single operation position.
    Type: Application
    Filed: June 6, 2007
    Publication date: December 13, 2007
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Seiji Ishigaki, Masahiko Miyata, Tomio Yamada, Terukazu Hiroe