Roller Patents (Class 384/44)
  • Patent number: 10436248
    Abstract: Provided is a motion guide device, which includes: a track rail; rolling elements; a moving block, which has an endless circulation path; and a holding belt having pockets, wherein the holding belt has a pair of end portions opposed to each other through intermediation of a free rolling element in the endless circulation path, and wherein a condition of (X?Y)×Z>(B+C)?A>0 is satisfied, where: A represents a path length of the endless circulation path; B represents a total length of the holding belt; C represents a diameter of the free rolling element; X represents a diameter of each of the pockets; Y represents a diameter of each of the rolling elements; and Z represents the number of the rolling elements arrayed in the holding belt.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: October 8, 2019
    Assignee: THK CO., LTD.
    Inventors: Shinji Aoki, Hiroki Irikawa
  • Patent number: 10399266
    Abstract: A die apparatus including a flexible lip integrally connected to a main body, the lip configured to adjust a gap between the flexible lip and a second lip and includes a slide bar equipped with multiple linear bearings where the slide bar and bearings are positioned in a slot of the main body, the multiple bearings further positioned in multiple pockets defined by the slide bar, the slot positioned in a spaced relation from the lip. In one aspect the slide bar includes a threaded hole to receive a fastener configured to fasten a pivot member to the slide bar, the pivot member configured to pivot in order to adjust the lip. The slide bar and bearings may be used on a variety of die apparatus having an integrally connected lip.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: September 3, 2019
    Assignee: Allied Dies, Inc.
    Inventors: Douglas Darrow, Jesse Schemenauer
  • Patent number: 10378581
    Abstract: In the linear motion guide unit, a retainer plate for retaining rolling elements, or rollers, is prevented from deformation so as to smoothly guide the rollers. The retainer plate is composed of a retainer member, frame members fitted into respective through holes formed in the retainer member, and a fixing member disposed in a longitudinally extending recess of the retainer member. The frame members form a predetermined gap between the fixing member and a carriage. Tightening forces of fastening bolts are not applied to the retainer member, thereby avoiding deformation of the retainer member.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: August 13, 2019
    Assignee: NIPPON THOMPSON CO., LTD.
    Inventors: Shoji Nagao, Tomoyuki Hayashi, Masahiro Miura
  • Patent number: 10330150
    Abstract: Provided is a rolling guide device which is capable of preventing uneven wear of a holding belt by alleviating a tensile force that acts on the holding belt when the holding belt circulates in an endless circulation path together with rolling elements. The endless circulation path has a guide groove configured to guide movement of the holding belt in the endless circulation path.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: June 25, 2019
    Assignee: THK CO., LTD.
    Inventors: Shinji Aoki, Hiroki Irikawa, Shodai Aoyama
  • Patent number: 10294991
    Abstract: A linear motion guide unit prevents damage to a corner portion of an end surface of a carriage resulting from high-speed rolling of the rolling elements, and eliminates the need for strict dimensional management of facing end surfaces of the carriage and a spacer. A crowning is formed at an end portion of the carriage, and an R chamfered portion is formed at a corner of an end surface of the carriage. An R chamfered portion is formed at a corner of the end surface of the spacer. The R chamfered portions define a valley portion between the facing surfaces of the carriage and the spacer. The rolling elements roll above the valley portion while striding it to thereby be prevented from colliding against the corner portion of the end surface of the carriage, whereby damage to the corner portion of the end surface of the carriage can be prevented.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: May 21, 2019
    Assignee: NIPPON THOMPSON CO., LTD.
    Inventors: Kunihiko Kito, Kentaro Narita, Masaharu Yoshida
  • Patent number: 10294990
    Abstract: A linear motion guide device has a high rigidity, a good linear motion guiding accuracy, and as little rattling as possible. The linear motion guide device prevents sand, water or other contaminants from entering its actuator main body, and features low maintenance requirement. A linear motion member of the linear motion guide device includes is constituted by a plurality of axially divided segments. Each of these segments supports a plurality of guided members which make contact with two, mutually paired, guide surfaces of a housing. A preload can be applied between the guide surfaces and the guided member. The housing has a sealed structure, with a pressure inside the housing higher than an external pressure, for preventing external sand and water from entering the housing.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: May 21, 2019
    Assignee: NTN CORPORATION
    Inventors: Tomoyuki Owada, Masaki Kagami
  • Patent number: 10082174
    Abstract: A movement guide device comprises: a support body formed with two roller rolling grooves in each of two side surfaces thereof; a moving body assembled onto the support body to freely move along the support body, and having a load roller rolling groove provided opposite to the roller rolling groove to form a load path together with the roller rolling groove; rollers arranged such that lines forming a contact angle with respect to the roller rolling groove intersect at a position outside the support body; and a roller retaining member arranged between two row of rollers, the moving body comprises a main moving body and cover bodies mounted at two ends of the main moving body; in the movement guide device, the roller retaining member comprises a roller retaining portion, formed in a plate shape extending in a length direction of the support body, and orthogonal to the length direction.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: September 25, 2018
    Assignee: THK CO., LTD.
    Inventors: Yu Chen, Meile Wang, Kentaro Hikomoto, Guangming Guo
  • Patent number: 10072703
    Abstract: The invention relates to a corrosion protection device for a bearing arrangement used or usable in machine and/or plant parts and a method for using such (a) corrosion protection device(s), wherein the bearing arrangement consists of at least one metallic material, e.g. 25CrMo4, 42CrMo4, 43CrMo4, 34CrNiMo6, C45, C45N, X20Cr13, GG-20, GGG-40, GS15, St 37 or the like and is used for the mutual relative movement of at least two bearing rings, wherein the bearing arrangement comprises a plurality of rolling elements and a plurality of through-bores and/or a plurality of blind bores, as well as a first screw-mounting surface for affixing a first mating structure and a second screw-mounting surface for affixing an opposite mating structure, characterized in that the corrosion protection device is integrated into at least one of the through-bores and/or blind bores or is or can be introduced in or at such bores.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: September 11, 2018
    Assignee: IMO Holding GmbH
    Inventor: Hubertus Frank
  • Patent number: 9933108
    Abstract: A table device including: a first member; a second member; a first guide device guiding the second member; a table supported by the second member; a first movable member connected to the table; a second movable member connected to the table; a first bearing member movably supporting the first movable member; a second bearing member movably supporting the second movable member; an actuator; and a gravity compensation device that includes a first supply portion supplying a gas to a first space facing the first movable member, a first adjustment portion adjusting an amount of the gas from the first supply portion, a second supply portion supplying a gas to a second space facing the second movable member, and a second adjustment portion adjusting an amount of the gas from the second supply portion, and can adjust a pressure in each of the first and second spaces.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: April 3, 2018
    Assignee: NSK LTD.
    Inventor: Toshinori Satou
  • Patent number: 9877576
    Abstract: A table device including a first member; a second member; a first guide device guiding the second member such that the second member is moved in a direction parallel to a first axis by movement of the first member; a table supported by the second member; a third member connected to at least a part of the table; a bearing member forming a gas bearing between the bearing member and the third member with a gas supplied between the bearing member and the third member, and movably supporting the third member in the direction parallel to the first axis; and a support device including a parallel pin that is arranged such that the parallel pin becomes parallel to the first axis, and connects the second member and the table, and supporting the table. The table is supported by the second member through the support device.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: January 30, 2018
    Assignee: NSK LTD.
    Inventor: Toshinori Satou
  • Patent number: 9697625
    Abstract: Systems, methods, and computer-readable storage media are provided for efficient real-time ink stroke smoothing, trajectory prediction, and GPU-leveraged rendering of ink stroke input. First and second ink points are received and an active Bézier approximation is computed based thereupon. Sequentially later in time that the first and second ink points, a third ink point is received. It is determined whether the third ink point adequately fits the active Bézier approximation. Where it is determined that the third ink point adequately fits, an updated active Bézier approximation is computed that includes the first, second and third ink points. Where it is determined that the third ink point fails to adequately fit, a different new Bézier approximation is computed that includes the third ink point but not the first and second ink points. Leveraging a GPU, a smoothed ink stroke based upon the Bézier approximation(s) is rendered.
    Type: Grant
    Filed: August 16, 2016
    Date of Patent: July 4, 2017
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Silvano Bonacina, Aleksandar Uzelac, Austin Bradley Hodges, David Abzarian, Fei Su, Miles M. Cohen, Anthony John Rolls Hodsdon
  • Patent number: 9599153
    Abstract: A bearing assembly can comprise: a base member including at least one base ramp; a carriage member including: a first surface defining a bearing channel, the bearing channel configured to receive a plurality of ball bearings and allow recirculating movement of the ball bearings, the bearing channel having a variable depth, wherein the bearing channel having a variable depth is configured to allow the plurality of ball bearings to extend beyond the first surface at a first portion of the bearing channel and extend below the first surface at a second portion of the bearing channel; a second surface opposing the first surface, the second surface including at least one carriage ramp, the carriage ramp configured to engage the at least one base ramp; and a retaining member configured to cover a least a portion of the first surface and retain the ball bearings in the carriage member.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: March 21, 2017
    Assignee: Ergotron, Inc.
    Inventor: Stuart Ripley Aldrich
  • Patent number: 9574605
    Abstract: A motion guide device includes a plurality of rolling element guide members provided along the entire length of a rolling element rolling surface so as to guide the unloaded side of a plurality of rolling elements that perform a rolling movement under load between the rolling element rolling surface and a loaded rolling element rolling surface. The rolling element guide member includes a beam member an outer member including a rolling element guide surface for guiding the unloaded side of the rolling elements, and the beam member and the outer member are insert-molded. Such a structure provides the motion guide device including the rolling element guide member that enables low cost manufacturing of a complex shape and capability of secure installation and guidance of the rolling elements with no deflection and can be adapted for use in various types by optionally selecting a connecting means.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: February 21, 2017
    Assignee: THK CO., LTD.
    Inventors: Nobuyuki Ikegami, Tsuyoshi Yamamoto, Fumiaki Morita, Manabu Sato, Kentaro Hikomoto, Mitsumasa Wada, Takuya Horie
  • Patent number: 9459083
    Abstract: An apparatus and associated method contemplating a goniometer stage having a base, and a roller bearing having a first annular race supported by the base and a concentric second annular race. A rotor plate is configured to support a workpiece, and defines a bearing surface contacting the second annular race throughout a selective movement of the rotor plate with respect to the base along an arc defining an axis of rotation that is spaced apart from the rotor plate.
    Type: Grant
    Filed: January 7, 2015
    Date of Patent: October 4, 2016
    Assignee: SEAGATE TECHNOLOGY, LLC
    Inventors: Grant Hester, Phil Gooras
  • Patent number: 9458883
    Abstract: A motion guide device for preventing interference of belt members with guide grooves. The motion guide device includes an endless circulation path for rolling elements, and a coupling member received in the endless circulation path. The endless circulation path includes a load rolling element path, a rolling element return path, and a direction-changing path. The direction-changing path includes a guide groove for the coupling member, which has an outer circumferential guide surface and an inner circumferential guide surface. The guide groove has a maximum width at a midpoint of a path within a range of from a coupling end between the direction-changing path and the load rolling element path or the rolling element return path to a center portion of the direction-changing path, and the groove width at the coupling end and the groove width at the center portion are smaller than the maximum value of the groove width.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: October 4, 2016
    Assignee: THK CO., LTD.
    Inventors: Toshiaki Kadono, Eri Kameda
  • Patent number: 9435374
    Abstract: A roller bearing device includes an outer housing and an inner housing, and an endless raceway formed between the housings for engaging with a bearing device, the bearing device includes a number of roller bearing members and a number of spacers engaged between the roller bearing members, the spacers each include a curved recess formed in each side portion for engaging with the roller bearing members, the curved recesses of each spacer is perpendicular to each other, and the spacers each include a channel for forming two resilient blades and for resiliently engaging with the roller bearing members and for stably anchoring the spacers between the roller bearing members.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: September 6, 2016
    Assignee: Hiwin Technologies Corp.
    Inventors: Che Kang Chang, Zong Sian Jiang
  • Patent number: 9410574
    Abstract: A linear ball bearing guideway is provided with six rows of balls disposed between the slider and the rail, so as to improve the overall load capacity. The six rows of balls are symmetrically disposed at two sides of the head portion of the rail, and the three of the six rows of balls at each side are located at different heights. The neck-portion width of the head portion is smaller than a distance between the two rows of balls disposed at the lowest rail rolling grooves, but larger than the value of a distance between the two rows of balls in the highest rail rolling grooves minus a diameter of the balls, which ensures that the neck-portion width is overly small and affect the stiffness of the rail.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: August 9, 2016
    Assignee: Hiwin Technologies Corp.
    Inventors: Chang-Hsin Kuo, Sheng-Hsiang Huang
  • Patent number: 9394940
    Abstract: The linear guide 10 includes a track rail 20, a movable block 30, and rollers 40 arranged between the track rail 20 and the movable block 30 and capable of endlessly circulating. A section of the linear guide 10 including an axis line of the rollers 40 and taken vertically across an unloaded roller rolling path 50 or a direction change path 60, the unloaded roller rolling path 50 or the direction change path 60 includes attitude support portions 55 that support an attitude of the rollers 40 rolling on the unloaded roller rolling path 50 or the direction change path 60, and space portions 54, 54a, and 54b that release a lubricant present inside the unloaded roller rolling path 50 or the direction change path 60. With such configuration, a smooth guide motion of a motion guide device is achieved unaffected by the lubricant in an unloaded circulation path.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: July 19, 2016
    Assignee: THK CO., LTD.
    Inventors: Toru Takahashi, Ryuji Furusawa, Tetsuro Kurokawa, Keisuke Nagaike
  • Patent number: 9284988
    Abstract: A guide device is provided in which rolling elements can be assembled into circulation paths in a short time. A slider body is provided with rolling element insertion holes open at positions of a member mounting surface superposed over a return passage. The insertion holes extend in the length directions of leg parts and reach positions which bisect cross-sections of the return passage. The opened shapes of the insertion holes are elongated hole shapes with dimensions in the rolling element movement direction larger than dimensions in the width directions. For this reason, if balls are inserted from the rolling element insertion holes, spaces are formed inside of the return passage visible from the rolling element insertion holes in the rolling element movement direction of the balls. A rod-shaped fixture is inserted into each space to press the balls in the rolling element movement direction of the return passage.
    Type: Grant
    Filed: July 12, 2012
    Date of Patent: March 15, 2016
    Assignee: NSK Ltd.
    Inventor: Yoshinori Mizumura
  • Patent number: 9273722
    Abstract: A rolling guide device is capable of facilitating smooth circulation of rolling elements in an endless circulation path, and enhancing the accuracy of motion of a moving member relative to a track member. The moving member includes: a main body member having load rolling surfaces and return paths for the rolling elements; direction change pipes incorporating inner direction change paths and having inner peripheral guide surfaces of outer direction change paths, respectively; and lid members each being mounted on the main body member and having outer peripheral guide surfaces of the outer direction change paths. The main body member has position reference holes formed therein so as to serve as position references for the direction change pipes, respectively, whereas the direction change pipes have positioning protrusions formed thereon so as to be press-fitted into the position reference holes, respectively. Further, the direction change pipes include rotation restriction protruding portions.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: March 1, 2016
    Assignee: THK CO., LTD.
    Inventors: Akihiro Teramachi, Takuya Horie, Mitsumasa Wada, Ayako Miyajima, Shinya Saito, Takeshi Shimamura, Teruaki Ooka, Marie Horikawa, Hiroyuki Kimura
  • Patent number: 9228608
    Abstract: Provided is a motion guide apparatus including a track member with a rolling-element rolling surface and a moving member with a load rolling-element rolling surface, the moving member being movably assembled to the track member via a rolling element provided between the moving member and the track member, wherein: the cross-sectional shape of each of the rolling-element rolling and the load rolling-element rolling surfaces has a circular arc shape projecting in the direction that the rolling-element rolling surface and the load rolling-element rolling surface face each other; the rolling element has a drum-shaped cross-section with a diameter gradually reduced from both ends of the rolling element so as to correspond to the cross-sectional shape of the rolling-element rolling surface and the load rolling-element rolling surface; and the rolling-element rolling surface and the load rolling-element rolling surface configure an angular contact structure via the rolling element.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: January 5, 2016
    Assignee: THK CO., LTD.
    Inventors: Toru Takahashi, Yoshihiro Hamada
  • Patent number: 9169867
    Abstract: A sleeve fits in a through-hole in a carriage to provide a return passage which makes sure of both the flexibility and the stiffness of the sleeve. The sleeve is constituted with fore and aft circular ends, a pair of columns and a pair of flexible columns lying lengthwise between the fore and aft circular ends to guide the roller, lengthwise slits lying between the flexible columns and the columns, and complementary ends made on the terminals of the fore and aft circular ends. The flexible columns have raised lands having curved outer surfaces, and recessions flanked by the raised lands and having rolling wall surfaces or the return passage. The raised lands and the recessions are arranged alternately in the lengthwise direction of the sleeve to give the sleeve the capability of elastic deformation.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: October 27, 2015
    Assignee: NIPPON THOMPSON CO., LTD.
    Inventors: Hideki Kuwabara, Shunsuke Kikuchi
  • Patent number: 9127715
    Abstract: A motion guide device includes a rolling passage formed between two members, a number of cylindrical roller bearing members disposed in the rolling passage and engaged between the members, and a number of spacers disposed in the rolling passage and engaged between the cylindrical roller bearing members, the spacers each include two opposite curved depressions for engaging with the cylindrical outer peripheral surfaces of the cylindrical roller bearing members, and each defined by a planar middle surface, a tilted upper surface and a tilted lower surface inclined relative to the planar middle surface and the vertical axis (Z) of the spacer for selectively engaging with the cylindrical roller bearing members.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: September 8, 2015
    Assignee: Hiwin Technologies Corp.
    Inventors: Jonus Liu, Wen Chia Wu
  • Patent number: 9046129
    Abstract: A circulation module of a linear guideway for being installed on a sliding block, comprises two circulation tubes each having a fill-in opening, two rolling units respectively arranged into the circulation tubes via the fill-in openings, and two separating sheets respectively installed on the circulation tubes to shield the fill-in openings. When the circulation tubes coupling through the sliding block, the fill-in openings respectively expose from two opposite ends of the sliding block, and part of each rolling unit arrange out of the corresponding circulation tube is disposed on the sliding block. Thus, the instant disclosure provides the circulation module for receiving the rolling units quickly and simplifying the construction of an end cap module mating thereto. Moreover, the instant disclosure also provides a linear guideway.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: June 2, 2015
    Assignee: OME Technology Co., Ltd.
    Inventor: Wen-Pin Liao
  • Publication number: 20150131930
    Abstract: A circulation module of a linear guideway for being installed on a sliding block, comprises two circulation tubes each having a fill-in opening, two rolling units respectively arranged into the circulation tubes via the fill-in openings, and two separating sheets respectively installed on the circulation tubes to shield the fill-in openings. When the circulation tubes coupling through the sliding block, the fill-in openings respectively expose from two opposite ends of the sliding block, and part of each rolling unit arrange out of the corresponding circulation tube is disposed on the sliding block. Thus, the instant disclosure provides the circulation module for receiving the rolling units quickly and simplifying the construction of an end cap module mating thereto. Moreover, the instant disclosure also provides a linear guideway.
    Type: Application
    Filed: November 8, 2013
    Publication date: May 14, 2015
    Applicant: OME TECHNOLOGY CO., LTD.
    Inventor: WEN-PIN LIAO
  • Publication number: 20150093056
    Abstract: A retainer of the linear guideway comprises a retaining member a supporting member. The retaining member has a base portion and two side wing potions integrally extended from the base portion. The base portion has a receiving groove, and each side wing portion has a positioning opening. One positioning opening is offset with respect to the receiving groove along a first direction, and another positioning opening is offset with respect to the receiving groove along a second direction opposite to the first direction. One side portion of the supporting member is wedged to the receiving groove of the base potion. Thus, the instant disclosure provides the retainer for positioning two staggered circulation tubes. Moreover, the instant disclosure also provides a linear guideway.
    Type: Application
    Filed: September 27, 2013
    Publication date: April 2, 2015
    Applicant: OME TECHNOLOGY CO., LTD.
    Inventor: WEN-PIN LIAO
  • Publication number: 20150043843
    Abstract: A rolling guide device is capable of preventing a scooping piece formed on a circulation path module from being deformed along with use over time, and enhancing the durability of the scooping piece, thereby achieving smooth motion of a moving member relative to a track member. A moving member includes: a main body member having load rolling surfaces and return paths for rolling elements; direction change pipes having formed therein inner direction change paths and having inner peripheral guide surfaces of outer direction change paths, respectively; and lid members each being mounted on the main body member and having outer peripheral guide surfaces of the outer direction change paths. Each of the direction change pipes includes: a first half circulation segment and a second half circulation segment; and a scooping portion for guiding the rolling elements into each of the inner direction change paths.
    Type: Application
    Filed: February 20, 2013
    Publication date: February 12, 2015
    Applicant: THK CO., LTD.
    Inventors: Takuya Horie, Mitsumasa Wada, Ayako Miyajima, Shinya Saito, Takeshi Shimamura, Teruaki Ooka, Hiroyuki Kimura, Marie Horikawa
  • Publication number: 20150036953
    Abstract: A motion device includes a track rail, a moving body, rolling elements, fixing members each fixed to an end surface of the moving body, and rolling element circulation members arranged between the moving body and the fixing members. The rolling element circulation members each have a connection section connected to the moving body so as to be rotatable about a Y direction, and a pair of first outside surfaces. The fixing members each have accommodation sections to accommodate the rolling element circulation members, and a pair of first inside surfaces closely contact with the pair of first outside surfaces. The respective rolling element circulation members and the accommodation sections are provided at both sides of the track rail interposed there between.
    Type: Application
    Filed: March 6, 2013
    Publication date: February 5, 2015
    Applicant: THK CO., LTD.
    Inventors: Mitsumasa Wada, Takuya Horie, Ayako Miyajima, Takeshi Shimamura, Teruaki Ooka
  • Publication number: 20150016759
    Abstract: A rolling guide device is capable of facilitating smooth circulation of rolling elements in an endless circulation path, and enhancing the accuracy of motion of a moving member relative to a track member. The moving member includes: a main body member having load rolling surfaces and return paths for the rolling elements; direction change pipes incorporating inner direction change paths and having inner peripheral guide surfaces of outer direction change paths, respectively; and lid members each being mounted on the main body member and having outer peripheral guide surfaces of the outer direction change paths. The main body member has position reference holes formed therein so as to serve as position references for the direction change pipes, respectively, whereas the direction change pipes have positioning protrusions formed thereon so as to be press-fitted into the position reference holes, respectively. Further, the direction change pipes include rotation restriction protruding portions.
    Type: Application
    Filed: March 5, 2013
    Publication date: January 15, 2015
    Applicant: THK CO., LTD.
    Inventors: Akihiro Teramachi, Takuya Horie, Mitsumasa Wada, Ayako Miyajima, Shinya Saito, Takeshi Shimamura, Teruaki Ooka, Marie Horikawa, Hiroyuki Kimura
  • Patent number: 8926181
    Abstract: An endless circulation path for a linear rail includes a loaded path, an unloaded path and two direction change paths which are connected between the loaded path and the unloaded path. Each of the unloaded path, the direction change paths and the loaded path has top and bottom grooves. A first line is connected between top and bottom grooves of the unloaded path. A second line is connected between the top and bottom grooves of each of the direction change paths. A slope of the second line, starting from the intersection between the direction change path and the unloaded path to the intersection between the direction change path and the loaded path, is gradually inclined relative to the first line. A third line is connected between the top and bottom groove of the loaded path. The third line is inclined relative to the first line.
    Type: Grant
    Filed: July 15, 2013
    Date of Patent: January 6, 2015
    Assignee: Chieftek Precision Co., Ltd.
    Inventor: Ming-che Hsu
  • Publication number: 20140376838
    Abstract: A slider assembly configured to move on a slide rail along an axial direction without limitation in distance is provided to solve the problems of the middle retaining members of a conventional circulation maintaining device, e.g., insufficient connection rigidity and inconvenience in manufacture and assembly. The positioning portion of a middle retaining member and the positioning portion of the protrusion of a slider are connected in a direction perpendicular to both the axial direction and a transverse direction in which the protrusion projects, thereby connecting the middle retaining member and the protrusion securely and evenly along their entire lengths. The middle retaining member and the protrusion also feature ease of manufacture and assembly.
    Type: Application
    Filed: June 17, 2014
    Publication date: December 25, 2014
    Inventor: MING-CHE HSU
  • Patent number: 8888368
    Abstract: A roller retaining chain includes a carrier belt extending along a longitudinal direction and multiple holes are defined through the carrier belt so as to respectively receive a roller therein. A retainer is located between any two adjacent holes and each of the retainers includes a first part and a bottom part. The first/second part has a first/second face facing the hole. Each of the first and second faces has a guide member and each guide member has a guide face which is perpendicular to the longitudinal direction. The two respective guide faces are located on the same plane. Each of the guide faces has an inclined stop face extending therefrom so as to retain the roller in the hole. Each roller is in contact with the two guide faces to prevent from being tilt.
    Type: Grant
    Filed: July 15, 2013
    Date of Patent: November 18, 2014
    Assignee: Chieftek Precision Co., Ltd
    Inventor: Ming-che Hsu
  • Patent number: 8801289
    Abstract: A circular sleeve is disclosed which fits into a lengthwise bore in a slider to provide a return passage to make sure of smooth rolling in a slider downsized or compact in length. The sleeve is inserted with leaving circular clearances inside the lengthwise bore in the slider. The sleeve has a bridged beam portion and cantilevered beam portions all of which may undergo elastic deformation under urging or impact force caused by rollers while rolling through the return passage. The bridged beam portion is flanked by support beam portions forming the outside circular surface of the sleeve and the cantilevered beam portions are fastened at their inward ends to a middle support beam portion and freed at their outside ends to bend or warp.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: August 12, 2014
    Assignee: Nippon Thompson Co., Ltd.
    Inventors: Hideki Kuwabara, Yoshihiro Yoshida
  • Patent number: 8757879
    Abstract: A roller maintaining chain includes an elongate strip having multiple holes separated by separation blocks. Each hole has a hole face perpendicular to the elongate strip. Each separation block has a top separation block and a bottom separation block. Each of the top and bottom separation blocks has an accommodating surface which has a flat surface and an inclined stop surface. A part of each accommodating surface is perpendicular to planes on the axial direction of the elongate strip. The flat surfaces of the top and bottom separation blocks are smoothly connected to each other. The inclined stop surfaces are inclined toward the top direction of the holes to maintain the rollers in the holes. The method for making the roller maintaining chain uses a left mold and a right mold, the two molds are split inclinedly and laterally to obtain the roller maintaining chain.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: June 24, 2014
    Assignee: Chieftech Precision Co., Ltd.
    Inventor: Ming-Che Hsu
  • Patent number: 8684604
    Abstract: A slide rail device includes a guide rail, a slider slidable along the guide rail, and a pair of cylindrical roller train sets disposed at two opposite sides of the guide rail. Each cylindrical roller train set is disposed between the guide rail and the slider, and has a plurality of cylindrical rollers. Each cylindrical roller has a first roller surface portion and a second roller surface portion that is recessed relative to the first roller surface portion. The first roller surface portions of the cylindrical rollers are in rolling contact with the guide rail and the slider, and the second roller surface portions of the cylindrical rollers are free of contact with the guide rail and the slider.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: April 1, 2014
    Inventor: Feng-Tien Chen
  • Patent number: 8632248
    Abstract: A seal member is a member including a lip, a seal base, a first extension section smaller in thickness than the seal base, and a first locking section, all of which are formed to be continuous in the cross-sectional direction. A retainer plate includes a base accommodating concave section for accommodating the seal base, and a first engagement concave section for accommodating the first locking section, and controls the first locking section to prevent the seal member from falling off. The first locking section is accommodated in the first engagement concave section with gaps left in the thickness and cross-sectional directions.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: January 21, 2014
    Assignee: NSK Ltd.
    Inventor: Jun Matsumoto
  • Patent number: 8523442
    Abstract: Disclosed is a supporting bearing for providing a large rotary module with an axial supporting force. The supporting bearing includes a body, a sliding track and a plurality of rolling members, wherein the sliding track is embedded in the body, and the rolling members are disposed so as to roll in the sliding track and to protrude from the top of the body, thereby providing higher precision and better rigidity to the large rotary module.
    Type: Grant
    Filed: May 4, 2011
    Date of Patent: September 3, 2013
    Assignee: Industrial Technology Research Institute
    Inventors: Shang-Te Chen, Chien-Chin Liao, En-Sheng Chang
  • Patent number: 8506166
    Abstract: Lubrication for rolling elements are made in a turnaround passage in an end cap to ensure proper and steady lubrication by the lubrication system simple in construction, with accompanying sustainable maintenance-free condition for lubrication. The end cap has an inward end surface facing directly towards the end surface of the carriage of the slider and having a concavity which sinks below the inward end surface and has openings communicating with the turnaround passages. A porous compact impregnated with lubricant is fitted into the concavity in a fashion exposed in part to the turnaround passage through the openings so that the rolling elements rolling through the turnaround passages, as coming into rolling-contact with the parts of the porous compact exposed out of the openings, are applied with the lubricant.
    Type: Grant
    Filed: December 27, 2010
    Date of Patent: August 13, 2013
    Assignee: Nippon Thompson Co. Ltd.
    Inventor: Yoshihiro Yoshida
  • Publication number: 20130170773
    Abstract: A roller-type linear sliding block includes a base block, two circulation-guiding blocks coupled to two ends of the base block and rollers received in the base block. The base block has a sliding groove corresponding to a linear sliding rail and a pair of load-bearing tracks formed at two sides of the sliding groove. The base block is formed with a cover member. The cover member is formed with non-load tracks beside the load-bearing tracks and retainers at two sides of each load-bearing track. Each circulation-guiding block includes an inner circulation member formed with an end of the cover member, a middle spacer and an outer circulation member connected to the inner circulation member in series to form a first circulation track and a second circulation track in the circulation-guiding block. Through the first and second circulation tracks, the rollers run in the load-bearing tracks and the non-load tracks.
    Type: Application
    Filed: April 1, 2012
    Publication date: July 4, 2013
    Inventor: Kuo-Le Tsao
  • Publication number: 20130108193
    Abstract: A circular sleeve is disclosed which fits into a lengthwise bore in a slider to provide a return passage to make sure of smooth rolling in a slider downsized or compact in length. The sleeve is inserted with leaving circular clearances inside the lengthwise bore in the slider. The sleeve has a bridged beam portion and cantilevered beam portions all of which may undergo elastic deformation under urging or impact force caused by rollers while rolling through the return passage. The bridged beam portion is flanked by support beam portions forming the outside circular surface of the sleeve and the cantilevered beam portions are fastened at their inward ends to a middle support beam portion and freed at their outside ends to bend or warp.
    Type: Application
    Filed: October 26, 2012
    Publication date: May 2, 2013
    Applicant: Nippon Thompson Co., Ltd.
    Inventor: Nippon Thompson Co., Ltd.
  • Patent number: 8430568
    Abstract: A linear motion device has a first assembly and a second assembly, at least one first rolling surface that extends in a longitudinal direction and provided on the first assembly, the first rolling surface being located opposite a second rolling surface which is provided on the second assembly, a row of rolling elements that circulate endlessly in the first assembly is located between the first and second rolling surfaces, and at least one central longitudinal section of the first rolling surface is designed such that the rolling elements are at least partially relieved of the load. The first rolling surface is provided on a separate first rolling surface part in the form of a profiled element having a substantially constant cross-sectional shape, the first rolling surface part is situated in a central longitudinal section at a distance from a first body of the first assembly, and is supported on the first body on both sides in the longitudinal direction next to the central longitudinal section.
    Type: Grant
    Filed: February 11, 2010
    Date of Patent: April 30, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Steffen Pfister, Bernhard Keller
  • Patent number: 8403563
    Abstract: A linear motion guide unit is envisaged smooth transfer of a roller from a turnaround passage to a return passage and vice versa across a joint between the turnaround passage and the associated return passage. Protrusions extending stepwise from an end of the turnaround passage come into complementary fit joints with an associated end of a tubular member defining the return passage to make wall surfaces to guide axially opposite ends of the roller, in which the joints are staggered or different in their locations between wall surfaces. The return passage is defined with a fore-and-aft hole of rectangular shape in transverse section inside a tubular member that fits into a bore made in the carriage. The tubular member is joined at lengthwise opposite ends thereof together to the protrusions that are raised above end surfaces of the end caps to extend the turnaround passage into the bore.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: March 26, 2013
    Assignee: Nippon Thompson Co., Ltd.
    Inventor: Shigeki Kakei
  • Publication number: 20130071052
    Abstract: A slide rail device includes a guide rail, a slider slidable along the guide rail, and a pair of cylindrical roller train sets disposed at two opposite sides of the guide rail. Each cylindrical roller train set is disposed between the guide rail and the slider, and has a plurality of cylindrical rollers. Each cylindrical roller has a first roller surface portion and a second roller surface portion that is recessed relative to the first roller surface portion. The first roller surface portions of the cylindrical rollers are in rolling contact with the guide rail and the slider, and the second roller surface portions of the cylindrical rollers are free of contact with the guide rail and the slider.
    Type: Application
    Filed: August 10, 2012
    Publication date: March 21, 2013
    Inventor: Feng-Tien Chen
  • Patent number: 8251588
    Abstract: The present invention provides a motion guide device having inner and outer direction changing passages that mutually cross three-dimensionally, in which a retainer is able to smoothly circulate even when an outer peripheral side of the inner direction changing passage as well as an outer peripheral side of the outer direction changing passage are formed on an end plate. An outer peripheral side (18) of the outer direction changing passage and an outer peripheral side (19) of the inner direction changing passage are so formed on an end plate (5) as to cross each other three-dimensionally. Built in the end plate (5) is an inner/outer direction changing passage component (24) formed to serve as not only an inner peripheral side (25) of the outer direction changing passage but also an outer peripheral side (26) of the inner direction changing passage together with the outer peripheral side (19) of the inner direction changing passage formed on the end plate (5).
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: August 28, 2012
    Assignee: THK Co., Ltd.
    Inventors: Takuya Horie, Hiroaki Mochizuki
  • Patent number: 8197140
    Abstract: A preload biased structure of a linear rail includes a rail and a sliding block disposed on the rail. The sliding block includes a sliding base, a supporting element, two connecting pieces and two locking pieces. The sliding element is provided with a connecting space. The front and rear end of the sliding base each is provided with abutting pieces. The abutting piece extends to form a biased block toward the connecting space. The biased block extends to form a biased slope. In assembling, the biased slope guides the supporting element to be inserted in the connecting space. The biased block provides a preloading force, whereby the supporting element can be fixed in the sliding base in advance. The locking pieces lock the two connecting pieces on both ends of the sliding base, so that the supporting element and the two connecting pieces can be assembled on the sliding base.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: June 12, 2012
    Assignee: OME Technology Co., Ltd.
    Inventor: Chin-Hsiang Wang
  • Publication number: 20120134608
    Abstract: A rolling element retainer chain provides a row of rolling elements smooth running in a recirculation passage and keeps a predetermined spacing distance between two adjacent rolling elements and the rolling elements be separated without contact to each other; the rolling element retainer chain comprises at least one thin flexible metal strip having a row of longitudinal arranged holes; a row of cross arranged latten between holes are formed thereof; and a number of spacers, incorporated on the cross arranged latten; the strength of the flexible metal strip is much higher than that of the resin materials conventionally used and can endure higher tension without broken, and thus a longer operating duration can therefore be achieved; both ends on the flexible metal strip can be overlapped wholly fixed without interference because of thinner thickness thereof, and a close loop rolling element retainer chain is formed thereof.
    Type: Application
    Filed: January 30, 2012
    Publication date: May 31, 2012
    Inventors: MING-CHE HSU, Lih-Fen CHEN
  • Patent number: 8177432
    Abstract: A guide carriage for a linear roller bearing is supportable in a longitudinally displaceable manner via at least one row of rollers on a guide rail which extends in a longitudinal direction, a separate rolling surface part which includes a rolling surface for the rollers is assigned to each row of rollers, and the rolling surface part is connected via an adhesive layer to a carrier body. The adhesive layer is designed essentially planar on the back side of the rolling surface part which faces away from the rolling surface, the rolling surface part being accommodated in a recess—which has an L-shaped cross section—of the carrier body.
    Type: Grant
    Filed: March 11, 2009
    Date of Patent: May 15, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Michael Klein, Richard Kuehnlein, Hans-H. Kohlmeier, Heinz Rossteuscher, Carsten Pfeuffer, Sascha Frenznick, Rudolf Schlereth, Andreas Schupies, Roland Greubel
  • Patent number: 8162763
    Abstract: An intermediate member is rockably provided around an outer periphery of a corresponding one of tripod shaft portions. Shaft-like rolling elements are retained by corresponding retainers so that the shaft-like rolling elements are able to circulate around the corresponding intermediate members and are able to roll between side surfaces of a corresponding one of raceway grooves of an outer ring and a torque transmitting surface of a corresponding one of the intermediate members. Then, raceway recesses are formed on the side surfaces of each raceway groove so as to extend in a direction of a rotation axis of the outer ring. The shaft-like rolling elements are fitted in the corresponding raceway recesses and are able to roll along bottom surfaces of the respective raceway recesses. Thus, the retainers are arranged outside the raceway recesses.
    Type: Grant
    Filed: December 16, 2009
    Date of Patent: April 24, 2012
    Assignee: JTEKT Corporation
    Inventors: Koichiro Mizuno, Yoshinari Sakai, Tatsuya Yoshi
  • Patent number: 8123408
    Abstract: A linear motion guide unit has a binding strip adapted to fasten a retainer plate to a carriage miniature in dimension, but long in lengthwise direction. The linear motion guide unit has a retainer plate lying lengthwise of the carriage in opposition to load-carrying race to keep more than one roller running through the load-carrying race, and a binding strip to fasten the retainer plate to the carriage. The binding strip is composed of a major part having any number of bents which are positioned at regular intervals in the longitudinal direction of binding strip, and lengthwise opposite angled parts prepared to come into engagement with the end caps, so that the binding strip urges elastically at the bents thereof the retainer to come into close engagement with carriage.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: February 28, 2012
    Assignee: Nippon Thompson Co., Ltd.
    Inventor: Kenjiro Nishiwaki
  • Patent number: 8057099
    Abstract: A guide carriage for a linear roller bearing includes a main body, which may bear in a longitudinally movably manner and via at least a first and at least a second endlessly circulating roller row against a guide rail that extends in a longitudinal direction, a deflection assembly provided on an end face of the main body and including at least one curved inner deflection channel for the first roller row, and at least a second curved outer deflection channel for the second roller row, the inner deflection channel being located within the outer deflection channel, the deflection assembly includes an end cap, on the inner side of which—that faces the main body—an outer boundary surface of the outer deflection channel is provided, and at least one separate, one-pieced deflection piece inserted in the end cap, on which an inner boundary surface is provided that covers the entire outer deflection channel. An outer boundary surface is provided that covers the entire inner deflection channel on the deflection piece.
    Type: Grant
    Filed: October 23, 2008
    Date of Patent: November 15, 2011
    Assignee: Robert Bosch GmbH
    Inventors: Carsten Pfeuffer, Andreas Schupies, Stefan Dorn