Patents by Inventor Yoshiaki Maekubo

Yoshiaki Maekubo 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: 20200148247
    Abstract: At a rim portion of a steering wheel, a base body is covered by a wood member. Due to a band portion of an engaging hook being installed on a tenon portion, and an anchor pin being inserted in the tenon portion, the engaging hook is anchored by the anchor pin, and the engaging hook is mounted to the wood member. Further, the wood member is mounted to the base body due to the engaging hook being mounted to the base body.
    Type: Application
    Filed: January 13, 2017
    Publication date: May 14, 2020
    Inventors: Yoshiaki MAEKUBO, Tamio HARADA, Takahiro OHASHI, Takahiro FUJII
  • Patent number: 10449988
    Abstract: There is provided a steering wheel including (1) a resin body made of resin, (2) a decorative body that is provided separately from the resin body, and (3) a placement member that is disposed between the resin body and the decorative body and that is moved by the decorative body when the decorative body has been relatively displaced.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: October 22, 2019
    Assignee: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO
    Inventors: Yoshiaki Maekubo, Ichiro Yamamoto, Taichi Hino, Tamio Harada, Hiroshi Ohira
  • Patent number: 10179600
    Abstract: A steering wheel decorative member configured to be mounted on a resin member covering a periphery of a ring core of a steering wheel. An adhesion region in which the decorative member is adhered to the resin member is provided so that a width of the adhesion region is reduced from a central portion on a back surface facing the resin member toward a circumferential end portion.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: January 15, 2019
    Assignee: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Yoshiaki Maekubo, Tamio Harada
  • Publication number: 20180086361
    Abstract: A steering wheel decorative member configured to be mounted on a resin member covering a periphery of a ring core of a steering wheel. An adhesion region in which the decorative member is adhered to the resin member is provided so that a width of the adhesion region is reduced from a central portion on a back surface facing the resin member toward a circumferential end portion.
    Type: Application
    Filed: September 22, 2017
    Publication date: March 29, 2018
    Inventors: Yoshiaki MAEKUBO, Tamio HARADA
  • Publication number: 20180009462
    Abstract: A decorative member for a steering wheel which is used for being attached to a resin member formed around a ring core metal of a steering wheel. The decorative member includes a base layer attached to the resin member, a design part arranged on the base layer, and a heater arranged between the design part and the base layer. The base layer may include an extraction part at an intermediate position in a longitudinal direction thereof such that a lead wire connected with the heater is led out of the extraction part.
    Type: Application
    Filed: June 22, 2017
    Publication date: January 11, 2018
    Inventors: Ichiro YAMAMOTO, Yoshiaki MAEKUBO
  • Patent number: 9688238
    Abstract: A webbing take-up device including: a spool on which a webbing fitted over an occupant is taken up; a restricting member restricting a rotation of the spool in the pullout direction under specific circumstances; a force limiter mechanism permitting the rotation of the spool in the pullout direction when a force limiter load or a higher load is imparted while the restricting member is restricting the rotation of the spool in the pullout direction; a switching member being capable of switching between a disposed position at a first position and a disposed position at second position, and provided between the first position and the second position; and an operation member being capable of being switched between operation and non-operation, whereby the disposed position of the switching member is switched between the first position and the second position and the force limiter load is switched between a high-load and a low-load.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: June 27, 2017
    Assignee: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO
    Inventors: Wataru Yanagawa, Masaru Ukita, Yoshiaki Maekubo
  • Publication number: 20160288815
    Abstract: There is provided a steering wheel including (1) a resin body made of resin, (2) a decorative body that is provided separately from the resin body, and (3) a placement member that is disposed between the resin body and the decorative body and that is moved by the decorative body when the decorative body has been relatively displaced.
    Type: Application
    Filed: April 1, 2016
    Publication date: October 6, 2016
    Inventors: Yoshiaki MAEKUBO, Ichiro YAMAMOTO, Taichi HINO, Tamio HARADA, Hiroshi OHIRA
  • Patent number: 9221425
    Abstract: A webbing retractor has a clutch mechanism including a lock member; a clutch cover, and a clutch guide that is positioned between the clutch cover and a spool. The clutch guide is capable of relatively rotating between an unactuated position and an actuated position with respect to the clutch cover, the clutch guide being engaged with a trigger member positioned on a side of the spool and being normally held in the unactuated position. A spring is provided in a compressed state between the clutch cover and the clutch guide, and a pawl is positioned between the clutch cover and the clutch guide, and engages with the ring unit when the trigger member disengages from the clutch guide. An axial-direction separation restricting mechanism restricts axial-direction separation between the clutch cover and the clutch guide while allowing the relative rotation between the clutch cover and the clutch guide.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: December 29, 2015
    Assignee: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO
    Inventors: Wataru Yanagawa, Masaru Ukita, Yoshiaki Maekubo
  • Patent number: 9212024
    Abstract: A webbing retractor is provided that can improve balance of load that a torsion shaft receives from a spool. Fit-together projections are formed at a spool side engaging portion of a main torsion member. Further, a load receiving portion is formed at a webbing insert-through hole side at the spool side engaging portion. Rotation radius direction components of rotational forces, that respective inclined surfaces of the fit-together projections receive from respective inclined surfaces of rotation restricting holes, are nullified by a rotation radius direction component of rotational force that the load receiving portion receives from a load imparting portion. Due thereto, balance of load that the main torsion member receives from a spool can be improved.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: December 15, 2015
    Assignee: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO
    Inventors: Yoshiaki Maekubo, Masaru Ukita, Wataru Yanagawa
  • Patent number: 9150192
    Abstract: A coil spring is provided in a compressed state between a coupling wall section provided at a clutch guide and an inner-side locking section. The clutch guide is provided with a support section which supports one axial-direction end section of the coil spring from a side opposite to the clutch cover in an axial direction of the clutch guide. The clutch cover is provided with a leading-end protruding section which is projected with respect to the inner-side locking section so as to be inserted in the other axial-direction end section of the coil spring. The leading-end protruding section is inclined, with respect to a direction orthogonal to an axial direction of the clutch cover, toward a support section side, so that the coil spring is curved so as to be convex to the support section side.
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: October 6, 2015
    Assignee: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO
    Inventors: Wataru Yanagawa, Masaru Ukita, Yoshiaki Maekubo
  • Patent number: 9090229
    Abstract: A webbing take-up device is obtained capable of securing sealing properties to gas generated by actuation of a gas generator. A switching mechanism of a webbing take-up device is equipped with a body, a gas generator, a piston that is actuated on receipt of pressure of gas generated by the gas generator, and a cylinder that internally houses the piston. A sheet and a support plate are attached to the body. Crushable ribs are provided to the sheet. The crushable ribs press the cylinder through a general portion of the sheet by attaching the sheet and the support plate to the body.
    Type: Grant
    Filed: April 1, 2013
    Date of Patent: July 28, 2015
    Assignee: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO
    Inventors: Yoshiaki Maekubo, Masaru Ukita, Wataru Yanagawa, Takayoshi Ando
  • Patent number: 9027866
    Abstract: A webbing take-up device that is both capable of promoting reductions in size and weight and capable of excellently maintaining coupling strength between a pawl member and a ring portion. A clutch plate and a lock ring of this webbing take-up device are coupled by plural teeth provided at the clutch plate meshing with plural teeth provided at the lock ring. This lock ring is specified to have a lower material strength than the clutch plate. A tooth height H2 of the plural teeth of the lock ring is specified to be lower than a tooth height of the plural teeth of the clutch plate. Thus, when the lock ring and the clutch plate mesh, tooth tips of the plural teeth of the clutch plate come into contact with tooth bottoms of the plural teeth of the lock ring.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: May 12, 2015
    Assignee: Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho
    Inventors: Wataru Yanagawa, Masaru Ukita, Yoshiaki Maekubo
  • Patent number: 9027865
    Abstract: In a webbing winding device, even when a piston moves toward the other side in a movement direction due to a reaction when the piston moves to a maximum movement position, an engagement surface of a hook portion comes into contact with a subject engagement surface of a subject engagement portion, so that the movement of the piston toward the other side in the movement direction is restricted. Accordingly, the piston is prevented from returning to a standby position, and a pawl is prevented from returning to a lock position. For this reason, a state where a rotation of a locking ring in the pull-out direction is maintained. Accordingly, after the piston moves from the standby position to the maximum movement position, the piston is prevented from returning to the standby position, and the force limiter load is prevented from being changed.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: May 12, 2015
    Assignee: Kabuhiki Kaisha Tokai-Rika-Denki-Seisakusho
    Inventors: Masaru Ukita, Wataru Yanagawa, Yoshiaki Maekubo, Takayoshi Ando
  • Patent number: 8955785
    Abstract: In a webbing winding device, a sub-torsion shaft is inserted from one side in the axial direction of a spool into the spool when assembling the sub-torsion shaft to the spool. Subsequently, by the sub-torsion shaft rotating in the winding direction, movement of the sub-torsion shaft with respect to the spool in the winding direction and in one side in the axial direction is inhibited. Subsequently, by a stopper being fitted from one side in the axial direction into insertion groove portions, movement of the sub-torsion shaft with respect to the spool in the pull out direction is inhibited. Accordingly, since the direction in which the sub-torsion shaft is assembled to the spool becomes only a direction parallel to the axial direction of the spool, the assembility of the sub-torsion shaft with respect to the spool may be improved.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: February 17, 2015
    Assignee: Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho
    Inventors: Wataru Yanagawa, Yoshiaki Maekubo, Masaru Ukita
  • Patent number: 8789786
    Abstract: Plural door portions are formed by sectioning the gas blowing section of the gas generator with slits. In a state in which gas has been generated by the gas generator, the plural door portions part at the slits and open towards the outside of the casing body. A gas flow path section is connected to a peripheral wall section configuring an deployment space permitting opening of the door portions. The gas flow path section is provided with an upstream portion which is in communication with the deployment space and formed along a direction orthogonal to the direction of gas blowing from the gas blowing section, and an opening portion provided at the gas inflow side, which is set so as to communicate with a space which is between adjacent door portions when the door portions 56 are in a opened state.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: July 29, 2014
    Assignee: Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho
    Inventors: Yoshiaki Maekubo, Masaru Ukita, Wataru Yanagawa
  • Patent number: 8695911
    Abstract: A webbing take-up device capable of smoothly releasing rotation locking while also stabilizing a load support direction during rotation locking. A pawl is equipped with a flat plane shaped load receiving face. The pawl is normally retained in a load receiving position but is rotationally moved when imparted with drive force of a drive mechanism section. The lock ring is equipped with a protrusion portion set with a lower rigidity than the rigidity of the pawl. The lock ring is not capable of rotating by the protrusion portion being supported by the load receiving face of the pawl, and rotation is permitted by moving the load receiving face away from the protrusion portion with rotational movement of the pawl.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: April 15, 2014
    Assignee: Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho
    Inventors: Yoshiaki Maekubo, Masaru Ukita, Wataru Yanagawa
  • Patent number: 8662435
    Abstract: Assembling performance of a torsion bar to a spool is improved. When a webbing take-up device is assembled, the torsion bar is inserted into the spool while catch projections of a serration pillar of the torsion bar are corresponded to insertion grooves of an insertion hole of the spool. Subsequently, in a state where the serration pillar of the torsion bar arrives at an catch hole of the spool, the torsion bar is rotated in a winding direction with respect to the spool, so that the catch projections are caught by catch surfaces of catch grooves of the catch hole, whereby the torsion bar is made non-removable from the spool. Therefore, a direction in which the torsion bar is assembled to the spool is made to be only an axial direction of the spool, and assembling performance of the torsion bar to the spool can be improved.
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: March 4, 2014
    Assignee: Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho
    Inventors: Yoshiaki Maekubo, Seiji Hori
  • Publication number: 20130264408
    Abstract: A webbing take-up device is obtained capable of suppressing generating of extraordinary noise caused by vibration accompanying vehicle travelling. A switching mechanism of a webbing take-up device is equipped with a lock ring and a body that is formed with a recessed portion that houses the lock ring. The switching mechanism is also equipped with a sheet that is attached to the body so as to cover the recessed portion housing the lock ring. Protruding portions are formed at the sheet. The protruding portions make contact with the lock ring housed in the recessed portion of the body. As a result the lock ring is restricted from vibrating inside the recessed portion.
    Type: Application
    Filed: April 3, 2013
    Publication date: October 10, 2013
    Applicant: Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho
    Inventors: Yoshiaki MAEKUBO, Masaru UKITA, Wataru YANAGAWA, Takayoshi ANDO
  • Publication number: 20130240655
    Abstract: In a webbing retractor, a press insertion portion of a sleeve provided to a webbing take-up shaft is press-inserted into a press insertion hole of a clutch base. Ribs are provided to an inner peripheral face of the press insertion hole, thereby enabling rattling between the sleeve and the clutch base to be suppressed. An end face of each rib on the opposite side to the press insertion direction of the press insertion portion is configured with a sloping faces that slopes along the press insertion direction, and so the sloping face makes sliding contact with the press insertion portion when the press insertion portion is being press-inserted into the press insertion hole. Burrs due to the press insertion portion being cut by the ribs can accordingly be prevented or suppressed from generating.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 19, 2013
    Applicant: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO
    Inventors: Wataru YANAGAWA, Masaru UKITA, Yoshiaki MAEKUBO
  • Patent number: 8534588
    Abstract: There is provided a webbing take-up device including: a seating portion formed to a cylinder shaped body and facing towards a cylinder shaped body axial direction second side; a bar shaped body housed at the inside of the cylinder shaped body and comprising a protrusion portion protruding out from the bar shaped body towards the cylinder shaped body axial direction second side; a push nut attached by fitting over the protrusion portion; and a washer through which the protrusion portion is inserted, the washer being seated against the seating portion with a face of the washer on the side of the washer away from the seating portion in contact with the push nut, and the rigidity to bending of the washer set higher than the rigidity to bending of the push nut.
    Type: Grant
    Filed: July 18, 2011
    Date of Patent: September 17, 2013
    Assignee: Kabushiki Kaisha Tokai-Rika-Denski-Seisakusho
    Inventors: Yoshiaki Maekubo, Masaru Ukita, Wataru Yanagawa