Patents by Inventor Yukifumi Yamada

Yukifumi Yamada 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).

  • Electric telescopic apparatus for vehicle seat
    Patent number: 7571964
    Abstract: An electric telescopic apparatus for a vehicle seat includes a base body provided at one of the vehicle seat or an ottoman, a movable body provided at a movable portion, the movable body assembled to the base body so as to extend or retract relative to the base body, a rack fixed on one of a top surface or a bottom surface of the base body or the movable body, the rack being formed in a plate shape which extends in the extending and retracting direction of the movable body and having teeth, a pinion housed in the other of the base body or the movable body and engaged with the rack, a drive unit for driving the pinion, and a guide mechanism provided at the base body and the movable body to guide the movable body in the extending and retracting direction of the movable body.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: August 11, 2009
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Hiromi Taniguchi, Takuya Mizuno, Masaki Okada, Yukifumi Yamada
  • SEAT CUSHION ADJUSTING APPARATUS
    Publication number: 20090195041
    Abstract: A seat cushion adjusting apparatus includes: a supporting member, forming a frame of a seat cushion; a seat member and forming an outer shape of the seat cushion; an adjusting member, engaging with an end portion of the seat member; a moving mechanism, rotatably connected to the adjusting member and moving the adjusting member in the front-rear direction of the seat relative to the supporting member; and an adjusting lever, one end thereof rotatably connected to the supporting member and the other end thereof rotatably connected to the adjusting member. The adjusting lever moves the end portion of the seat member by rotating the adjusting member around an axis to adjust the outer shape of the seat cushion in accordance with, a movement of the adjusting member in the front-rear direction of the seat relative to the supporting member by a means of the moving mechanism.
    Type: Application
    Filed: January 9, 2009
    Publication date: August 6, 2009
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Sadao ITO, Yukifumi Yamada
  • Seat apparatus
    Patent number: 7527332
    Abstract: A vehicle seat apparatus includes a first link vertically movably supporting a seat to a seat rail of a floor side, a second link connecting a seat belt anchor to the seat side for restraining an occupant into the seat and a third link provided between the first link and the second link for connecting the first link and the second link, the third link being engagable with a lock member which is fixedly connected to the seat side. The third link is normally disengaged from the lock member to allow the seat to move in a vertical direction and is engaged with the lock member in an emergency upon receipt of an active force through the seat belt anchor and the second link to control a vertical movement of the seat.
    Type: Grant
    Filed: September 14, 2005
    Date of Patent: May 5, 2009
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Makoto Sakai, Yukifumi Yamada, Sadao Ito
  • Headrest device
    Patent number: 7517015
    Abstract: A headrest device includes a fixed base, a movable base disposed forward relative to the fixed base, at least one first link being rotatably supported by a connecting shaft provided between the movable base and the fixed base, at least one second link being supported by the connecting shaft so as to rotate relative to the first link, a connection portion connecting the movable base and the fixed base to be relatively movable by a relative rotation between the first link and the second link, a drive portion relatively rotating the first link and the second link in a direction so as to deploy the movable base away from the fixed base on the basis of a detected result by a rear-end collision detection means, and at least one relative rotation restricting portion provided for restricting a relative rotation between the first link and the second link about the connecting shaft.
    Type: Grant
    Filed: October 11, 2006
    Date of Patent: April 14, 2009
    Assignees: Aisin Seiki Kabushiki Kaisha, Toyota Jidosha Kabushiki Kaisha, Toyota Boshoku Kabushiki Kaisha
    Inventors: Takami Terada, Yukifumi Yamada, Takuya Mizuno, Hiromi Taniguchi, Masatoshi Mori, Kiyoka Matsubayashi, Fumitoshi Akaike, Seiya Nishimura
  • Seat reclining device
    Patent number: 7506933
    Abstract: A seat reclining device includes a spiral spring made of a wire and formed in a spiral shape having a first engaged portion and a second engaged portion, a first engaging member engaging the first engaged portion, and a second engaging member engaging the second engaged portion, wherein one/each of the first engaging member and the second engaging member includes an extending direction supporting member supporting the first engaged portion and/or the second engaged portion, from the opposite end side of the wire in an extending direction thereof, a first supporting member supporting the first engaged portion and/or the second engaged portion from outside of the wire, and a second supporting member supporting the first engaged portion and/or the second engaged portion from inside of the wire in a normal direction thereof.
    Type: Grant
    Filed: August 23, 2006
    Date of Patent: March 24, 2009
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Yukifumi Yamada, Hideo Nihonmatsu
  • Seat sliding apparatus for vehicle and method of assembling the same
    Patent number: 7503614
    Abstract: A seat sliding apparatus for a vehicle, includes: restraining means for restraining a sliding movement of an upper rail in a front-rear direction of a seat and having a first projection preformed at the upper rail and second projections preformed at a lower rail before assembling the upper and lower rails; and a slide supporting member disposed between the upper rail and lower rails, supporting the upper rail to be slidable in the front-rear direction relative to the lower rail and positioning the upper rail to the finally assembled position in the vertical direction. The lower rail and the upper rail are structured in a way that an interval between the first projection and each second projection along the vertical direction in which the upper rail moves between the insertion position and the finally assembled position is greater than zero.
    Type: Grant
    Filed: October 24, 2006
    Date of Patent: March 17, 2009
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Yukifumi Yamada, Yasuhiro Kojima
  • SEAT SLIDE DEVICE FOR VEHICLE
    Publication number: 20090050772
    Abstract: A seat slide device for a vehicle capable of preventing generation of noise includes lower rails, upper rails, lock mechanisms, release levers, and stoppers. Each lock mechanism includes a plurality of lock holes provided on the lower rail and arranged in the longitudinal direction of the lower rail and a lock lever provided on the upper rail to be pivotable about a pivot axis extending in the longitudinal direction of the upper rail for engagement with and disengagement from the lock holes. Further, each release lever pivots the lock lever to release the engagement of the lock holes with the lock lever, and each stopper restricts the position at which the release lever remains separated from the lock lever. At least contact portions of the release lever with the lock lever and the stopper are provided with a coating layer made of a resin.
    Type: Application
    Filed: October 30, 2006
    Publication date: February 26, 2009
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Yukifumi Yamada, Yasuhiro Kojima
  • LOCK APPARATUS OF SEAT FOR VEHICLE
    Publication number: 20090033138
    Abstract: A lock apparatus of a seat for a vehicle includes a striker, a base including a first groove portion, a hook including a second groove portion and pivoting between a lock position and an unlock position, a pawl restraining a pivotal movement of the hook towards the unlock position while allowing the pivotal movement of the hook towards the lock position, a cam member including a cam profile for allowing the pivotal movement of the hook towards the lock position and for restraining the pivotal movement of the hook towards the unlock position, and a first biasing member. When the hook is pivoted to the lock position, the striker is positioned between the rotational shaft of the hook and the rotational shaft of the pawl, and the pawl and the hook are engaged at an opposite position of the rotational shaft of the hook relative to the striker.
    Type: Application
    Filed: July 29, 2008
    Publication date: February 5, 2009
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Yukifumi Yamada, Sadao Ito, Naoki Goto
  • Seat reclining apparatus for vehicle
    Patent number: 7484806
    Abstract: A seat reclining apparatus for a vehicle includes a first plate including internal gear teeth, a second plate including external gear teeth, a third plate including internal gear teeth, a fourth plate including external gear teeth, a shaft rotatably supported by the first and third plates, first and second wedge members, a first cam pressing the wedge members to integrally rotate therewith, a support member arranged between the third and fourth plates and engaging with the third plate and the fourth plate when an amount of eccentricity between the internal gear teeth and the external gear teeth reaches a predetermined level, and a second cam pressing the support member to integrally rotate therewith. The amount of eccentricity defined by the support member is smaller than that defined by the wedge members.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: February 3, 2009
    Assignee: Aisin Seiki Kabushiki kaisha
    Inventors: Sadao Ito, Yukifumi Yamada
  • Seat reclining apparatus for vehicle
    Patent number: 7484807
    Abstract: A seat reclining apparatus for a vehicle, comprises a rail member attached to a vehicle body so as to be aligned approximately along a curve described by a pivotal movement of a seat back, a slider attached to the rail member so as to be slidable, a lock apparatus for regulating/permitting the slider to slide on the rail member, a striker including a first end portion, a second end portion and a connecting portion connecting the first end portion to the second end portion, the second end portion rotatably connected to the slider, the first end portion adapted to engage a lock member attached to the seat back and connected to the slider so as to be pivotable relative to the second end portion and the first end portion adapted to engage the lock member in order to maintain an angle of the seat back.
    Type: Grant
    Filed: October 10, 2007
    Date of Patent: February 3, 2009
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Hiroyuki Okazaki, Masaki Sugimoto, Yukifumi Yamada
  • SEAT POSITION ADJUSTING APPARATUS FOR VEHICLE
    Publication number: 20080290706
    Abstract: A seat system for a vehicle, includes a first pair of slide rails and a second pair of slide rails arranged on a vehicle compartment floor so as to extend in a front-rear direction of the vehicle, a first seat and a second seat arranged alongside each other, a forward-rearward movement mechanism provided under each of the first and second seats and supported at each of the first and second pairs of slide rails so that each of the first and second seats is movable along each of the first and second pairs of slide rails, and a sway mechanism provided between each of the first and second seats and the forward-rearward movement mechanism and swayably supporting each of the first and second seats at least in a direction where each of the first and second seats is approaching another of the first and the second seats.
    Type: Application
    Filed: May 13, 2008
    Publication date: November 27, 2008
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Yukifumi YAMADA, Sadao Ito
  • SEAT APPARATUS FOR VEHICLE
    Publication number: 20080284223
    Abstract: A seat apparatus for a vehicle includes a seat cushion frame for supporting a seat cushion and operated to move between a first position and a second position relative to a vehicle floor, a link member including first and second ends respectively pivotably connected to the vehicle floor and to a first end portion of the seat cushion frame, a guiding member provided at the vehicle floor for supporting a second end portion of the seat cushion frame to the vehicle floor and including a guiding groove, and a sliding member provided at the second end portion of the seat cushion frame and slidably engaged into the guiding groove. The guiding groove extends along a connection line connecting the sliding member and a connection point between the seat cushion frame and the link member so as to move the seat cushion frame between the first position and the second position.
    Type: Application
    Filed: May 12, 2008
    Publication date: November 20, 2008
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventor: Yukifumi YAMADA
  • Reclining apparatus for vehicle seat
    Patent number: 7441840
    Abstract: A reclining apparatus for a vehicle seat includes a lower plate, an upper plate rotatably supported by each lower plate, a cam for restricting or permitting rotation of each upper plate relative to each lower plate, a connecting shaft fitted to each cam with a fit clearance for integrally rotating each cam and a spring wound around a rotational axis of each cam for biasing each cam in a rotational direction in which rotation of each upper plate relative to each lower plate is restricted. A first end of each spring is engaged with each lower plate and a second end of each spring is engaged with each cam. The spring includes a pressing portion for pressing the connecting shaft so that a play corresponding to the fit clearance between each cam and the connecting shaft can be eliminated.
    Type: Grant
    Filed: November 6, 2006
    Date of Patent: October 28, 2008
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Yukifumi Yamada, Yasuhiro Kojima
  • Ottoman device
    Patent number: 7429083
    Abstract: An ottoman device includes a first rotation link rotatably supported at a front end of a seat in order to support an ottoman main body, which is extended to a front direction of the seat or stored within the seat, in accordance with the rotation of the rotation link in a first direction and a second direction, and a lock device for prohibiting or allowing the rotation of the first rotation link, the lock device being attached to the first rotation link at a rotational center thereof.
    Type: Grant
    Filed: January 19, 2006
    Date of Patent: September 30, 2008
    Assignees: Aisin Seiki Kabushiki Kaisha, Toyota Jidosha Kabushiki Kaisha
    Inventors: Eiichiro Tsuji, Yukifumi Yamada, Takahiro Ishijima
  • SEAT APPARATUS FOR VEHICLE
    Publication number: 20080224518
    Abstract: A seat apparatus for a vehicle includes a first lock mechanism switching between a first locked state and a first lock-released state and a second lock mechanism switching between a second locked state and a second lock-released state. The first lock mechanism includes a restraining member and a releasing member. The restraining member restrains a pivotal movement of a seatback at a predetermined angle position, at which the seatback does not interfere with a seat cushion moving between a first position and a second position thereof, when the second lock mechanism is in the second lock-released state. The releasing member is linked to the restraining member and releases a restriction to the pivotal movement of the seatback by being moved in association with a movement of the seat cushion when the second lock mechanism is in the second lock-released state.
    Type: Application
    Filed: March 4, 2008
    Publication date: September 18, 2008
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Yukifumi YAMADA, Hiroyuki Okazaki, Kazuya Iwasa
  • STRIKER APPARATUS FOR VEHICLE
    Publication number: 20080217932
    Abstract: A striker apparatus for a vehicle includes a striker adapted to be engaged with a locking member secured at an engaging object and having a pair of base portions, a base member having a pair of attaching holes, a reinforcement member placed on the base member and including a pair of insertion holes opening to face the pair of attaching holes respectively, and a pair of flanges formed at each of base portions being inserted into each of the pair of the attaching holes and each of the insertion holes for holding the base member and the reinforcement member therebetween.
    Type: Application
    Filed: February 27, 2008
    Publication date: September 11, 2008
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventor: Yukifumi YAMADA
  • Seat reclining apparatus for vehicle
    Patent number: 7416255
    Abstract: A seat reclining apparatus for a vehicle includes a first plate held at one of a seat cushion frame and a seatback frame, a second plate held at the other one of the seat cushion frame and the seatback frame, a pole having an external tooth facing the internal tooth, a first protrusion provided at the pole, a restricting portion provided at the second plate so as to face the first, the restricting portion coming in contact with the first protrusion so that the internal tooth and the external tooth are prohibited from being engaged, a second protrusion provided at the pole, and a stopper portion provided at the second plate for keeping a rotational angle of the second plate relative to the first plate at a predetermined angle upon a contact with the second protrusion.
    Type: Grant
    Filed: December 12, 2006
    Date of Patent: August 26, 2008
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Yukifumi Yamada, Yasuhiro Kojima
  • SEAT RECLINING APPARATUS FOR VEHICLE
    Publication number: 20080129017
    Abstract: A seat reclining apparatus for a vehicle, includes a rail member, a slider, a lock apparatus, a striker, a rotating member provided between the rail member and the slider and including a large diameter portion and a small diameter portion, the large diameter portion engaging the rail member along a longitudinal direction of the rail member, and the small diameter portion engaging the slider along a longitudinal direction of the rail member and the striker adapted to engage a lock member attached to the seat back in order to maintain an angle of the seat back.
    Type: Application
    Filed: November 16, 2007
    Publication date: June 5, 2008
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Hiroyuki OKAZAKI, Masaki Sugimoto, Yukifumi Yamada
  • SEAT RECLINING APPARATUS FOR VEHICLE
    Publication number: 20080088167
    Abstract: A seat reclining apparatus for a vehicle, comprises a rail member attached to a vehicle body so as to be aligned approximately along a curve described by a pivotal movement of a seat back, a slider attached to the rail member so as to be slidable, a lock apparatus for regulating/permitting the slider to slide on the rail member, a striker including a first end portion, a second end portion and a connecting portion connecting the first end portion to the second end portion, the second end portion rotatably connected to the slider, the first end portion adapted to engage a lock member attached to the seat back and connected to the slider so as to be pivotable relative to the second end portion and the first end portion adapted to engage the lock member in order to maintain an angle of the seat back.
    Type: Application
    Filed: October 10, 2007
    Publication date: April 17, 2008
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Hiroyuki OKAZAKI, Masaki Sugimoto, Yukifumi Yamada
  • SEAT DEVICE FOR VEHICLE
    Publication number: 20080079300
    Abstract: A seat device for a vehicle adapted to adjust a positional height of a seat cushion includes rails, frames supporting the seat cushion, link members, a torque rod connecting link members, a sector gear formed so as to operate together with one of the link members and rotatably supported by one of the frames, an elongated hole formed on the sector gear, a pinion gear meshing with the sector gear, a pressing bracket supported by the pinion gear, a stopper pin inserted into the elongated hole of the sector gear and connected to the one of the frames at a first end of the stopper pin and to the pressing bracket at a second end of the stopper pin.
    Type: Application
    Filed: September 17, 2007
    Publication date: April 3, 2008
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Yasuhiro Kojima, Yukifumi Yamada