Patents Assigned to Koyo
  • Telescopic Shaft and Steering System
    Publication number: 20160185378
    Abstract: A telescopic shaft includes: an inner shaft where a pair of recessed grooves that face each other in a direction perpendicular to an axis and extend in an axial direction are formed; an outer shaft where a pair of recessed grooves that face each other in the direction perpendicular to the axis and extend in the axial direction are formed; a plurality of rolling bodies that are disposed between each of the recessed grooves and the corresponding recessed groove so as to form a line in the axial direction; a pair of stoppers; and a buffer body unit. Each of the stoppers restricts falling of a rolling body at an end portion of the corresponding line from the corresponding recessed groove of the inner shaft. The buffer body unit integrally includes a pair of buffer bodies, and a connection portion that connects the pair of buffer bodies.
    Type: Application
    Filed: December 28, 2015
    Publication date: June 30, 2016
    Applicants: JTEKT CORPORATION, KOYO MACHINE INDUSTRIES CO., LTD.
    Inventors: Futoshi KAMIMURA, Kiyoshi IWASE, Mitsuharu OZAKI, Daiki YANO, Kazuhide HONDA, Yasutaka FUKUMOTO, Osamu HONDA, Naoki FUJIMOTO, Takashi MAEDA
  • TELESCOPIC SHAFT AND STEERING SYSTEM
    Publication number: 20160185379
    Abstract: A telescopic shaft includes an inner shaft, an outer shaft, a plurality of rolling bodies that are disposed between recessed grooves of the inner shaft and the outer shaft and form a line in an axial direction, a stopper, and a buffer body. The stopper restricts falling of the rolling bodies from the recessed groove of the inner shaft. The buffer body is interposed between the stopper and a rolling body at an end portion of the line. An end surface of the buffer body includes an inclined abutment portion that is inclined with respect to a plane perpendicular to an axis of the inner shaft. The abutment portion abuts against the rolling body at the end portion of the line at a stroke end of the inner shaft with respect to the outer shaft.
    Type: Application
    Filed: December 28, 2015
    Publication date: June 30, 2016
    Applicants: JTEKT CORPORATION, KOYO MACHINE INDUSTRIES CO., LTD.
    Inventors: Mitsuharu Ozaki, Daiki Yano, Kazuhide Honda, Yasutaka Fukumoto, Osamu Honda
  • HERMETIC SEAL DEVICE
    Publication number: 20160153564
    Abstract: A sealing device includes an annular seal portion formed of an elastic material. On an inner peripheral surface of the seal portion, a main lip is formed so as to be in slidable contact with an outer peripheral surface of a rotary shaft, and a vacuum space side inclined surface is formed so as to gradually enlarge in diameter from the main lip toward a vacuum space side. On the vacuum space side inclined surface, a plurality of annular projections are formed along an axial direction so as to be in slidable contact with the outer peripheral surface of the rotary shaft in a state where the main lip is in slidable contact with the outer peripheral surface of the rotary shaft.
    Type: Application
    Filed: April 18, 2014
    Publication date: June 2, 2016
    Applicants: Koyo Sealing Techno Co., Ltd., Nabtesco Corporation
    Inventors: Kazuha Ikebukuro, Koji Kubota, Shuji Kurita
  • SEALING DEVICE
    Publication number: 20160131257
    Abstract: A sealing device which allows the man-hour for mounting the sealing device to be reduced is provided. A sealing device includes: a slinger fitted and fixed to an end portion of an inner shaft; a core metal fitted and fixed to an end portion of an outer ring; an inner seal lip fixed to the core metal and in slidable contact with the slinger; an outer seal lip fixed to the core metal radially outward of the inner seal lip and in slidable contact with a side surface of a flange portion; and a labyrinth lip fixed to the core metal radially outward of the outer seal lip and forming a labyrinth seal together with the side surface of the flange portion.
    Type: Application
    Filed: November 6, 2015
    Publication date: May 12, 2016
    Applicants: KOYO SEALING TECHNO CO., LTD., JTEKT CORPORATION
    Inventors: Shintaro Sakai, Katsuyuki Sakaji, Yoshito Takada
  • BEARING ASSEMBLY FOR STEERING COLUMN
    Publication number: 20160032975
    Abstract: A radial support bearing assembly for use within a steering column assembly having an outer tube and a shaft 50, including at least one inner ring 70 defining an inner raceway, the inner ring 70 being axially fixed relative to the shaft 50, at least one outer ring 30 defining an outer raceway, and a plurality of roller elements 60 disposed between the at least one inner ring 70 and the at least one outer ring 30 in rolling contact with the inner raceway and the outer raceway. The inner ring 70 is in direct contact with the shaft 50 and has a circular cross-section as taken in a plane parallel to a longitudinal center axis of the shaft 50.
    Type: Application
    Filed: March 14, 2013
    Publication date: February 4, 2016
    Applicant: KOYO BEARINGS NORTH AMERICA LLC
    Inventors: Patrick Dupuis, Fabrice Lemaitre
  • Welding transformer and welding transformer assembly and welding apparatus
    Patent number: 9202622
    Abstract: It is possible to control a welding in a high speed and a high precision large electric current, and consumption electric power is also reduced. In the welding transformer, a loop magnetic core 25, a wound primary coil 12, plural positive side coils 14 and plural negative side coils 16 that are alternately sandwiched between respective gaps 12a of the primary coil 12, are comprised. A coil is fixed on the other surface of a contact base member 62. On the other surface of the contact base member 62, a first connection polar board 44 is electrically connected to a positive side electric conductor 30 through the first connection polar board 44. A negative side coil 16 is electrically connected to a negative side electric conductor 32. The connecting part of the positive side coil 14 and the negative side coil 16 is electrically connected to the third connection polar board 48.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: December 1, 2015
    Assignee: KOYO GIKEN INC.
    Inventors: Koji Kai, Kazuki Houzan, Akira Nagai, Kazuhiro Suzuki
  • INDUCTION HEATING COIL AND METHOD FOR MANUFACTURING INDUCTION HEATING COIL
    Publication number: 20150327335
    Abstract: An induction heating coil includes a coil section configured to heat a treatment target by induction, a power supply section configured to supply power to the coil section, and a cooling medium passage that is arranged in the power supply section and the coil section, and is configured to supply a cooling medium to the coil section. The coil section, the power supply section, and the cooling medium passage are formed using a metal additive fabrication method.
    Type: Application
    Filed: May 1, 2015
    Publication date: November 12, 2015
    Applicant: Koyo Thermo Systems Co., Ltd.
    Inventors: Ryosuke YAMAMOTO, Ayaka NAKATA, Norihide FUJIYAMA
  • SURFACE GRINDING METHOD FOR WORKPIECE
    Publication number: 20150239089
    Abstract: [Problem] To machine a workpiece such as a hard brittle material or difficult-to-cut material innovatively and accurately and to improve the machining rate significantly. [Solution Means] In grinding a workpiece W by a cup grinding wheel 3 while supplying a slurry 5 containing abrasive grains, the grinding wheel 3 is rotated at low peripheral speed. No more than 500 m/min., preferably 30 to 430 m/min., is appropriate for the peripheral speed of the grinding wheel 3. The slurry 5 at a flow rate of no more than 4.0 ml/cm2/h, preferably of 1.0 to 2.0 ml/cm2/h is dropped or sprayed little by little onto a ground surface of the workpiece W.
    Type: Application
    Filed: February 23, 2015
    Publication date: August 27, 2015
    Applicant: KOYO MACHINE INDUSTRIES CO., LTD.
    Inventors: Haruyuki HIRAYAMA, Kazuhiro YUSOU
  • Positioning means for camshaft roller bearing
    Patent number: 9062709
    Abstract: A roller bearing assembly includes a plurality of rollers (122), a cage (114) including a plurality of slots (118) for positioning the plurality of rollers, an outer race (134) positioned radially outside the plurality of rollers and the cage, and means (126, 130, 138) for retaining axial alignment between the cage and the outer race provided integrally with at least one of the cage and the outer race.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: June 23, 2015
    Assignee: Koyo Bearings North America LLC
    Inventors: Fabrice Lemaitre, Matthieu Lavieuville, Christophe Artur, Jens-Eike Jesau
  • FOLLOWER MECHANISM
    Publication number: 20150082938
    Abstract: A follower mechanism movable along an axis within a bore including an alignment groove. The follower mechanism includes a bucket with a cylindrical inner surface and a cylindrical outer surface, and a yoke positioned at least partially within the bucket, the yoke including a bottom wall and two opposed sidewalls depending upwardly therefrom, each sidewall defining a shaft aperture. A shaft with first and second ends is received in the shaft apertures, and a roller follower is rotatably received on the shaft such that a portion of the roller follower extends axially outwardly beyond the bucket.
    Type: Application
    Filed: February 8, 2012
    Publication date: March 26, 2015
    Applicant: Koyo Bearings North America LLC
    Inventor: Gary Schick
  • BEARING ASSEMBLY FOR A CONNECTING ROD
    Publication number: 20150078692
    Abstract: A bearing assembly including a connecting rod (30) with a first end (32) and a second end (36), the second end (36) defining a first outer raceway (44a) and a second outer raceway (44b) with a thrust ring (60) therebetween, a crankshaft (10) defining a cylindrical inner raceway (14), a first plurality of radial roller elements (52a) disposed between the first outer raceway (44a) and the inner raceway (14), and a second plurality of radial roller elements (52b) disposed between the second outer raceway (44b) and the inner raceway (14). An axial length of at least one of the first radial roller elements (52a) is greater than an axial length of the first outer raceway (44a) and the axial length of at least one of the second radial roller elements (52b) is greater than an axial length of the second outer raceway (44b).
    Type: Application
    Filed: February 8, 2012
    Publication date: March 19, 2015
    Applicant: Koyo Bearings USA LLC
    Inventors: Gary Schick, Scott Brown
  • WELDING TRANSFORMER AND WELDING TRANSFORMER ASSEMBLY AND WELDING APPARATUS
    Publication number: 20140360994
    Abstract: It is possible to control a welding in a high speed and a high precision large electric current, and consumption electric power is also reduced. In the welding transformer, a loop magnetic core 25, a wound primary coil 12, plural positive side coils 14 and plural negative side coils 16 that are alternately sandwiched between respective gaps 12a of the primary coil 12, are comprised. A coil is fixed on the other surface of a contact base member 62. On the other surface of the contact base member 62, a first connection polar board 44 is electrically connected to a positive side electric conductor 30 through the first connection polar board 44. A negative side coil 16 is electrically connected to a negative side electric conductor 32. The connecting part of the positive side coil 14 and the negative side coil 16 is electrically connected to the third connection polar board 48.
    Type: Application
    Filed: June 29, 2012
    Publication date: December 11, 2014
    Applicant: KOYO GIKEN INC.
    Inventors: Koji Kai, Kazuki Houzan, Akira Nagai, Kazuhiro Suzuki
  • BEARING OUTER RACE
    Publication number: 20140334760
    Abstract: A roller bearing assembly (10) having an annular outer race (22) with a raceway (24), a pair of opposed flanges (30), and a pair of shoulders (32), each shoulder (32) being disposed between a corresponding flange (30) and a corresponding edge of the raceway (24), a roller retainer (12) defining a plurality of roller pockets (16), and a plurality of rollers (14), each roller (14) being disposed in a corresponding roller pocket (16). Each shoulder (32) forms an annular ridge (32a) with the corresponding edge of the raceway (24).
    Type: Application
    Filed: December 13, 2012
    Publication date: November 13, 2014
    Applicant: Koyo Bearings USA LLC
    Inventor: Scott Abrahamson
  • Method of manufacturing a split bearing ring
    Patent number: 8819939
    Abstract: A method of manufacturing a split bearing ring comprises forming an endless ring (42) having first (34) and second edges (46), removing at least a portion of the ring between the first and second edges to form at least one aperture (50, 54), hardening the ring, and after hardening, splitting the ring adjacent the at least one aperture to create first and second mating ends (74, 78) of the ring.
    Type: Grant
    Filed: August 20, 2009
    Date of Patent: September 2, 2014
    Assignee: Koyo Bearings USA LLC
    Inventors: Jon F. V. Pohlman, Anthony P. Copper
  • METHOD OF MANUFACTURING SPLINE TELESCOPIC SHAFT
    Publication number: 20140212593
    Abstract: A method of manufacturing a spline telescopic shaft, includes a sliding step of sliding in an axial direction an inner shaft manufacturing intermediate member and an outer shaft manufacturing intermediate member, in one of which a resin coating is disposed on splines. In the sliding step, a sliding load of the inner shaft manufacturing intermediate member and the outer shaft manufacturing intermediate member is detected, and sliding is ended at a timing when the detected sliding load reaches a threshold load which is determined based on an initial sliding load detected at a start of the sliding.
    Type: Application
    Filed: January 22, 2014
    Publication date: July 31, 2014
    Applicants: KOYO MACHINE INDUSTRIES CO., LTD., JTEKT CORPORATION
    Inventors: Naoto MIYAWAKI, Kenji HIGASHI, Masanori KOBAYASHI, Shoji SASAKI, Seijun INOUE, Yoshinobu OGURA
  • COMPOSITE PLATED FILM AND LAMINATED FILM
    Publication number: 20140199539
    Abstract: It is provided a steel with composite plating film providing rust prevention over a long time period and a method of manufacturing thereof. A composite plating film 24 is formed on a metal material 21. The film 24 has a plating film 23 made of a sacrificial anode metal and photocatalyst particles 22 dispersed and fixed in the plating film 23. The photocatalyst particle has a main body composed of a photocatalyst and a semiconductor material supported thereon. The composite plating film 24 is formed on the surface of the metal material 21 by electroplating, hot-dipping, chemical plating or the like.
    Type: Application
    Filed: January 27, 2014
    Publication date: July 17, 2014
    Applicants: KOYO ENGINEERING CO., LTD., MEISEI INDUSTRIAL COMPANY LIMITED
    Inventors: Hirotaka YAMASHIRO, Yasuhisa MAEDA, Shuichi SAITOH, Katsuhisa KASHIWAZAKI
  • Roller thrust bearing vibration isolator
    Patent number: 8764307
    Abstract: A vibration isolator for use between a support structure and a roller thrust bearing including a first race, a second race, a bearing cage and at least one roller element. The vibration isolator includes a radially extending portion with a mating surface, a bearing surface, an inner peripheral edge and an outer peripheral edge, the radially extending portion being substantially disk-shaped. An annular flange extends axially from one of the inner peripheral edge and the outer peripheral edge of the radially extending portion, and at least one groove is defined by the mating surface of the radially extending portion. The bearing surface is configured to abut one of the first race and the second race and the mating surface is configured to abut the support structure such that a void is defined between the at least one groove and the support structure.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: July 1, 2014
    Assignee: Koyo Bearings USA LLC
    Inventors: Justin Brubaker, Dana Patoine, Christopher Bean
  • Spline telescopic shaft and method for manufacturing the same and vehicle steering apparatus
    Patent number: 8753215
    Abstract: There is provided a spline telescopic shaft having first and second shafts that are fitted to each other slidably in an axial direction. First and second splines that engage with each other are respectively provided in the first and second shafts. A resin coating that is provided on at least a tooth surface of the first spline is fitted to a tooth surface of the second spline. The resin coating is subjected to heat fitting processing for sliding the first and second shafts in the axial direction under predetermined conditions, to fit a surface of the resin coating to the tooth surface of the second spline.
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: June 17, 2014
    Assignees: JTEKT Corporation, Koyo Machine Industries Co., Ltd.
    Inventor: Ryoichi Tokioka
  • BOLT RETENTION APPARATUS AND METHOD
    Publication number: 20140144004
    Abstract: A unitized component assembly includes an component having an aperture, and a plurality of discrete projections extending into the aperture and spaced apart from one another about the perimeter of the aperture, and a fastener having a head and a shank extending from the head. The shank includes a necked portion and a threaded portion adjacent the necked portion. The shank is positioned in the aperture such that the necked portion is in facing relationship with the projections. The threaded portion is engageable with the projections to provide an axial stop for limiting movement of the fastener relative to the component.
    Type: Application
    Filed: January 31, 2014
    Publication date: May 29, 2014
    Applicant: Koyo Bearings USA LLC
    Inventors: Anthony P. Copper, Justin R. Ballenger
  • Motor control device and vehicle steering system
    Patent number: 8681506
    Abstract: A motor control device comprising a control board for controlling driving of an electric motor, the control board including a multilayer circuit board having inner layers and outer layers, a ground pattern disposed around an output shaft of the electric motor formed on one of the inner layers, and a severed portion formed on a part of the ground pattern, so as to sever through the ground pattern in a radial direction of the output shaft. The construction reduces noise from the motor control device.
    Type: Grant
    Filed: February 2, 2009
    Date of Patent: March 25, 2014
    Assignees: JTEKT Corporation, Koyo Electronics Industries Co., Ltd.
    Inventors: Motoo Nakai, Shigeki Nagase, Akira Sugimoto