Patents Assigned to Koyo
  • Publication number: 20120142439
    Abstract: Provided is a shaft-and-yoke coupling structure for coupling a steering transmission shaft and a yoke of a universal joint. An end portion of the steering transmission shaft joined to the yoke has a stepped portion and an insertion convex portion protruding from the stepped portion in the axial direction of the steering transmission shaft. The yoke has an annular receiving portion facing and fixed to the stepped portion via a welded portion and an insertion recess portion surrounded by the receiving portion in which the insertion convex portion is inserted. The insertion convex portion and the insertion recess portion are arranged to be engaged with each other with a predetermined amount of play in the direction of rotation when the welded portion is broken.
    Type: Application
    Filed: December 5, 2011
    Publication date: June 7, 2012
    Applicants: KOYO MACHINE INDUSTRIES CO., LTD., JTEKT CORPORATION
    Inventor: Yutaka SHIBAHIRAKI
  • Patent number: 8182157
    Abstract: A thrust bearing assembly generally includes a cage and a plurality of rolling elements. The cage has first and second cage halves with each cage half having a respective radial segment with a plurality of circumferentially spaced openings. Each opening has an opening perimeter. The cage halves are interconnected with portions of the radial segments circumferentially between the plurality of openings abutting along a given plane and the respective openings aligned to defined rolling element pockets. The rolling elements are positioned in the rolling element pockets such that a centerline of each rolling element lies in or in proximity to the given plane. A flange extends along at least a portion of each opening perimeter to retain the rolling elements within a respective one of the rolling element pockets.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: May 22, 2012
    Assignee: Koyo Bearings USA LLC
    Inventors: Charles W. Shattuck, David R. Torlai, Richard F. Murphy
  • Publication number: 20120106887
    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: Application
    Filed: June 28, 2011
    Publication date: May 3, 2012
    Applicant: KOYO BEARINGS USA LLC
    Inventors: Justin Brubaker, Dana Patoine, Christopher Bean
  • Patent number: 8162721
    Abstract: In through-feed grinding workpieces by grinding stones rotating around the axes of spindles, the spindles are tiltably held by elastic holding means around tilt axes substantially orthogonal to the direction of exit and entrance of the workpieces with respect to the grinding stones. When a grinding loads are imposed on the entrance sides of the grinding stones, the spindles are tilted by offset loads around the tilt axes against the force of urging means in such a manner that the axial displacement and the exit displacement of the grinding stone due to the offset load are substantially the same. The grinding stones are reset around the tilt axes by the elastic holding means immediately before the end of processing at which time the axial displacement is smaller. This makes it possible to reduce the number of defectively ground articles coming from the through-feed grinding and reduce the wear in the grinding stones.
    Type: Grant
    Filed: June 11, 2008
    Date of Patent: April 24, 2012
    Assignee: Koyo Machine Industries Co., Ltd.
    Inventors: Hideto Kitatsuji, Tomohiro Okamoto
  • Patent number: 8157659
    Abstract: A telescopic shaft (5) has an inner shaft (12) and a tubular outer shaft (13) that are fitted to each other so as to be relatively movable in an axial direction (X1) and to be able to transmit torque between each other. A row of a plurality of rolling bodies (14) is interposed between corresponding axial grooves (15, 16) of the inner shaft (12) and the outer shaft (13). A retaining member (17) moving together with the rolling bodies (14) while retaining the rolling bodies (14) has a facing portion (33) facing an end surface (121) of the inner shaft (12). As the telescopic shaft (5) telescopes in and out, the facing portion (33) comes into contact with the end surface (121) of the inner shaft (12), and this limits the movement of the rolling bodies (14) in the axial direction (X1).
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: April 17, 2012
    Assignees: JTEKT Corporation, Koyo Machine Industries Co., Ltd.
    Inventors: Satoshi Kakutani, Hiroyuki Muraosa
  • Patent number: 8156612
    Abstract: An angle-adjustable hinge provided with a first member provided with a case portion holding an approximately disc-shaped gear member having a non-circular through hole as to freely rotate, a second member having a fitting shaft portion detachably inserted to the through hole of the gear member, a wedge-shaped window portion formed on the case portion, and a floating wedge member, movably disposed within the wedge-shaped window portion, in which one side face is a toothed face to engage with the gear member and another side is a contact face to contact a wedge face of the wedge-shaped window portion, to restrict the gear member from oscillation in one direction against the case portion by the engagement of the toothed face with the gear member and the contact of the contact face and the wedge face.
    Type: Grant
    Filed: February 17, 2010
    Date of Patent: April 17, 2012
    Assignee: Koyo Giken Kabushiki Kaisha
    Inventor: Tadanobu Yamashita
  • Publication number: 20120080258
    Abstract: A spline telescopic shaft includes an inner shaft and a tubular outer shaft fitted slidably in an axial direction, outer splines provided on an outer periphery of the inner shaft, inner splines provided on an inner periphery of the outer shaft, a resin coating provided on at least one of the outer splines and the inner splines, and a lubricant retaining groove formed on the resin coating by using any of a laser, water jet, and compressed air, and extending in a direction crossing the axial direction.
    Type: Application
    Filed: February 18, 2011
    Publication date: April 5, 2012
    Applicants: KOYO MACHINE INDUSTRIES CO., LTD., JTEKT CORPORATION
    Inventor: Ryoichi Tokioka
  • Patent number: 8104141
    Abstract: An angle-adjustable hinge in which a pair of floating wedge members are disposed as to be rotation symmetric for 180° around a first axis as an axis of symmetry, and each of wedge faces of four wedge-shaped window portions is serially formed on an arc around a second axis as a center, eccentric from the first axis and rotation symmetric for every 90° around the first axis as the axis of symmetry.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: January 31, 2012
    Assignee: Koyo Giken Kabushiki Kaisha
    Inventor: Tadanobu Yamashita
  • Patent number: 8092313
    Abstract: A universal joint yoke includes: a cylindrical portion for fixing a shaft; a slit that is formed in the cylindrical portion and that extends from one end of the cylindrical portion in an axial direction of the cylindrical portion, which is a first direction; a reinforcement flange that extends from the other end of the cylindrical portion radially outward with respect to the cylindrical portion; and a pair of arms that extend from the reinforcement flange on a side opposite to a side on which the cylindrical portion is provided and that are swingably coupled to another yoke via a coupling shaft.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: January 10, 2012
    Assignees: JTEKT Corporation, Koyo Machine Industries Co., Ltd.
    Inventors: Yutaka Shibahiraki, Hidekazu Sakakibara, Satoshi Kakutani, Makoto Aida
  • Publication number: 20110259142
    Abstract: A tappet (10) is movable along an axis. The tappet (10) includes a skirt defining an opening (18) and an alignment device (22) positioned at least partially within the opening (18). The alignment device (22) has a generally T-shaped cross-sectional shape when taken through a plane substantially parallel to the axis and has a non-T-shaped cross-sectional shape when taken through a plane substantially perpendicular to the axis.
    Type: Application
    Filed: September 4, 2009
    Publication date: October 27, 2011
    Applicant: KOYO BEARINGS USA LLC
    Inventors: Anthony P. Copper, James Darren Tedder
  • Patent number: 8037964
    Abstract: When stopping operation of an electric power steering apparatus, a motor relay is kept in an on-state even after a power supply relay is in an off-state. A drive control portion sets a target value of a d-axis current to a value other than zero and sets a target value of a q-axis current to zero, and performs a processing same as that at the time of rotating a motor. MOS-FETs contained in a motor driving circuit are controlled such that each of driving currents of the two phases or more is not zero and the brushless motor does not rotate even supplied with these driving currents. Electric charge accumulated in a capacitor is discharged via the MOS-FETs each in an on-state, a motor relay and the windings of the brushless motor. The electric charge accumulated in the capacitor may be discharged via the excitation coil of the motor relay.
    Type: Grant
    Filed: October 15, 2007
    Date of Patent: October 18, 2011
    Assignees: JTEKT Corporation, Koyo Electronics Industries Co., Ltd.
    Inventors: Shigeki Nagase, Takeshi Ueda, Akira Sugimoto, Kimihito Chino
  • Patent number: 8007564
    Abstract: A manufacture method of briquette for use as metal stock is provided which increases the efficiency of drying porous masses so as to shorten a drying time, and which provides a simplified constitution for reducing an installation area of a system and for reducing the running cost and initial cost of the system. The porous masses are formed by compression molding a recyclable material containing metallic powder. The compression molded porous masses are fed into a tubular member, into which hot air is blown for drying the porous masses.
    Type: Grant
    Filed: September 28, 2005
    Date of Patent: August 30, 2011
    Assignees: Jtekt Corporation, Koyo Thermo Systems Co., Ltd.
    Inventors: Mitsuma Matsuda, Toshihide Nakamura
  • Publication number: 20110194794
    Abstract: A radial rolling element bearing (10) for supporting a shaft (14) for rotation with respect to an adjacent support surface (38). The radial rolling element bearing (14) includes a plurality of rolling elements (18) and a race (22). The race includes a convex first surface (44) that forms a raceway for the plurality of rolling elements and a second surface (48) opposite the convex first surface having a profile that forms a hollow space (52) between the second surface of the race and one of the adjacent support surface and the shaft. The hollow space has a first volume when a first radial load is applied to the bearing, and the hollow space has a second volume less than the first volume when a second radial load greater than the first radial load is applied to the bearing.
    Type: Application
    Filed: October 22, 2009
    Publication date: August 11, 2011
    Applicant: KOYO BEARINGS USA LLC
    Inventor: Mark A. Joki
  • Patent number: 7980371
    Abstract: A clutching device includes an outer race, an inner race, a plurality of rollers and an actuator plate. The outer and inner races have axial ridges to define opposed outer and inner race pockets. The rollers are positioned in the outer and inner race pockets. The clutching device further includes an axial projection coupled for rotation with one of the inner and outer race. An actuator plate is coupled for rotation with one of the inner and outer race and axially moveable between a first position wherein the actuator plate engages the axial projection and a second position wherein the actuator plate does not engage the axial projection.
    Type: Grant
    Filed: August 23, 2010
    Date of Patent: July 19, 2011
    Assignee: Koyo Bearings USA LLC
    Inventor: Mark A. Joki
  • Patent number: 7978465
    Abstract: The function expanding method for a display device comprises: a step of preparing a plurality of types of function expanding modules; a step of selecting a function expanding module or modules from the plurality of types of function expanding modules; and a step of stacking the selected single or plurality of function expanding module(s) to a rear part of the display device at will, and connecting the module(s) by using expanding connector(s).
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: July 12, 2011
    Assignee: Koyo Electronics Industries Co., Ltd.
    Inventors: Hiroshi Osaka, Yasuhiko Murai, Hiroyuki Kuramoto, Koichi Uchimura
  • Publication number: 20110120261
    Abstract: A method of manufacturing a connecting rod includes providing a substantially cylindrical rough bore in one end of the connecting rod, applying one of a compressive load and a tensile load to the connecting rod to at least partially deform the rough bore to a non-cylindrical shape, and machining the deformed rough bore to a substantially cylindrical shape while the one of the compressive load and the tensile load is applied to the connecting rod.
    Type: Application
    Filed: July 28, 2010
    Publication date: May 26, 2011
    Applicant: KOYO BEARINGS USA LLC
    Inventors: Christopher R. Abreu, Anthony P. Copper
  • Publication number: 20110111174
    Abstract: A display sheet includes a substrate; front-side and rear-side synthetic resin composition layers formed on front and rear surfaces, respectively, of the substrate; and an ink layer formed by ink-jet on the front-side synthetic resin composition layer. The substrate is made of sailcloth having projections and depressions on front and rear surfaces thereof. A surface of the front-side synthetic resin composition layer is formed on an irregular surface having projections and depressions attributed to the projections and depressions of the surface of the substrate. The ink layer is formed by causing a fine ink to cover the projections and permeate the depressions. The display sheet further includes an adhesive layer formed on the rear-side synthetic resin composition layer, and a release paper laminated to a surface of the adhesive layer, wherein the release paper has been creped and has a tensile elongation at break of 5 to 50%.
    Type: Application
    Filed: December 17, 2008
    Publication date: May 12, 2011
    Applicant: KOYO SANGYO CO., LTD.
    Inventors: Tsumoru Nomura, Senichirou Araki, Yasuyo Omori, Naomi Kuwakubo, Atsushi Nagakura, Soichi Funayama
  • Publication number: 20110073053
    Abstract: A control method for an electro-mechanical camshaft phase shifting devices in general, and a control method for an electro-mechanic camshaft phase shifting device with a self-locking mechanism in particular. The control method takes advantage of a cam shaft reaction torque in conjunction with a frictional self-locking feature of an electro-mechanical camshaft phase shifting device to simplify the control structure and to reduce the actuating torque required for the associated electric machine, consequently reducing the size of electric machine.
    Type: Application
    Filed: July 28, 2010
    Publication date: March 31, 2011
    Applicant: KOYO BEARINGS USA LLC
    Inventor: Xiaolan Ai
  • Publication number: 20110069923
    Abstract: A thrust bearing assembly generally includes a cage and a plurality of rolling elements. The cage has first and second cage halves with each cage half having a respective radial segment with a plurality of circumferentially spaced openings. Each opening has an opening perimeter. The cage halves are interconnected with portions of the radial segments circumferentially between the plurality of openings abutting along a given plane and the respective openings aligned to defined rolling element pockets. The rolling elements are positioned in the rolling element pockets such that a centerline of each rolling element lies in or in proximity to the given plane. A flange extends along at least a portion of each opening perimeter to retain the rolling elements within a respective one of the rolling element pockets.
    Type: Application
    Filed: December 3, 2010
    Publication date: March 24, 2011
    Applicant: KOYO BEARINGS USA LLC
    Inventors: Charles W. Shattuck, David R. Torlai, Richard F. Murphy
  • Publication number: 20110035943
    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: Application
    Filed: August 20, 2009
    Publication date: February 17, 2011
    Applicant: KOYO BEARINGS USA LLC
    Inventors: Jon F. V. Pohlman, Anthony P. Copper