Combined With Seal Or Guard Patents (Class 384/15)
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Publication number: 20100329595Abstract: The sliding mechanism including rolling elements 3 as a main element is protected against entry of foreign substances. First, second auxiliary lips 14, 15 are formed in positions on inclined faces 9b formed on lips 9 of end seals S facing and making contact with end faces of sealing members 4, 5. Gaps 10, 11 formed between different levels of the end faces of the sealing members 4, 5 and the inclined faces 9b of the lips 9 are filled with the first, second auxiliary lips 14, 15. Since the gaps 10, 11 are thus filled, foreign substances do not enter the sliding mechanism M through the gaps 10, 11.Type: ApplicationFiled: June 3, 2010Publication date: December 30, 2010Applicant: Nippon Thompson Co., Ltd.Inventors: Hideki Kuwabara, Ryouichi Satake
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Patent number: 7832930Abstract: An interlocking construction between an end cap and a retainer plate to support rollers in a load-carrying race is made to provide an endless circulating circuit with no gap to allow the rollers smoothly rolling through there with keeping adequate posture. The slider has a carriage, end caps, rollers rolling through a circulating circuit, a retainer plate extending along the load-carrying race to keep the rollers inside the load-carrying race, and a binding strip to fasten the retainer plate to the carriage. The retainer plate comes into connection with spigots extending out of the end caps. Lengthwise opposite ends of the retainer plate conform to ends of the spigots in a complementary relation to fit over the ends of the spigots in a sliding direction.Type: GrantFiled: October 30, 2007Date of Patent: November 16, 2010Assignee: Nippon Thompson Co., Ltd.Inventors: Toshiaki Geka, Hideki Kuwabara
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Patent number: 7819584Abstract: A guide apparatus including a track rail and a moving block is free from the possibility of foreign matter entering the moving block through the gaps between the side surfaces of the track rail and the inner side surfaces of the moving block even in an environment where many fine dust particles are flying. A guide apparatus has a track rail and a moving block 20 relatively movably attached to the track rail with rolling elements interposed therebetween. The rolling elements recirculate through rolling element recirculation passages. Foreign matter entry preventing plates 34 are provided so that their respective distal ends longitudinally contact the opposite side surfaces of the track rail to close the gaps between the side surfaces of the track rail and at least the inner side surfaces of skirt portions on both sides of a moving block body 21 and the inner side surfaces of end plates of the moving block 20.Type: GrantFiled: October 5, 2004Date of Patent: October 26, 2010Assignee: THK Co., Ltd.Inventors: Hidekazu Michioka, Daisuke Yatsushiro, Yoshiaki Saito
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Patent number: 7810208Abstract: An improved rod wiper for excluding dirt and other environmental materials from a linear actuator is described. The annular wiper element includes an outwardly extended lip that is in constant engagement with the front face of the actuator housing. Not only does the lip assist in creating a seal with the housing, it redirects axial forces to have a radial component on the inwardly extended lips of the wiper element in contact with the rod to improve the seal of the wiper element and rod.Type: GrantFiled: January 17, 2007Date of Patent: October 12, 2010Assignee: Hampton Hydraulics, LLCInventor: Johannis Adriaan Jan Geelhoed
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Publication number: 20100247005Abstract: A sealing segment for sealingly connecting two structural components parts which are movable relative to one another, with two sealing bodies which are connected to one another by a web and which can be arranged in recesses of the structural component parts in an articulated manner, and a sealing segment arrangement with a plurality of sealing segments of this type, and a flow machine with a sealing segment arrangement of this type.Type: ApplicationFiled: November 3, 2008Publication date: September 30, 2010Inventors: Emil Aschenbruck, Michael Blaswich, Jaman El Masalme, Frank Reiss
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Patent number: 7794150Abstract: A linear module has a rail with a longitudinal axis, a table part, and at least one linear guide device; the at least one linear guide device has a main part embodied so that it is integrally joined to the table part, two end caps, and at least one endless roller element circuit. The length of the table part measured in the direction of the longitudinal axis is greater than that of the linear guide device and at least one end cap is accommodated in a recess of the table part; the recess is open toward the underside of the table part and is delimited by the top surface of the table part, by at least one side wall of the table part, and by the main part of the linear guide device.Type: GrantFiled: January 14, 2008Date of Patent: September 14, 2010Assignee: Robert Bosch GmbHInventors: Bernhard Keller, Steffen Pfister
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Patent number: 7789564Abstract: A linear rolling bearing, which has a guide carriage that is mounted by rolling bearings on a guide rail, and which has a scraper arranged at least one end side of the guide carriage for scraping foreign objects such as chips, dust and cooling liquids from the guide rail. The scraper is in scraping contact, by its scraping system, preferably by a sealing lip or sealing edge, with the guide rail. The scraper has a first stop for abutment against the guide rail, with the abutment of the first stop indicating an impermissible position of the scraper on the guide rail.Type: GrantFiled: December 17, 2005Date of Patent: September 7, 2010Assignee: Schaeffler KGInventors: Peter Keller, Dietmar Rudy
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Patent number: 7785010Abstract: In order to provide a long-life, highly-reliable guide apparatus which exhibits dustproof performance and prevents intrusion of dust into the moving block in environments where there are lots of fine dust such as gypsum and ceramic powder and where no oil contents or oil contents are not liked, there is provided a guide apparatus having a track rail 11, in which rolling-element raceway grooves 12-1 to 12-4 are formed along a longitudinal direction thereof, and a moving block 20 attached to the track rail by way of a plurality of rolling elements in a relatively-movable manner, wherein an end-face dustproof brush 25, which has a brush member 36 whose tip end contacts a surface of the track rail 11 and which eliminates extraneous matters adhering to the surface of the track rail 11 by means of the brush member 36, is attached to outside of each of the side covers 22 with respect to the direction of relative movement.Type: GrantFiled: November 19, 2004Date of Patent: August 31, 2010Assignee: THK Co., Ltd.Inventors: Hidekazu Michioka, Daisuke Yatsushiro, Tadashi Hirokawa, Yoshiaki Saito
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Patent number: 7758244Abstract: A linear guide unit, in particular a gantry axis, that has an oblong guide support (14), is provided with two essentially parallel guide rails (24, 26) extending in the guide direction (F), but rotated in relation to each other around a rotation axis (V) parallel to the guide direction (F), each of which guide rails (24, 26) has at least one sliding carriage (36, 38) guided on it so that it can slide in the guide direction (F), the sliding carriages (36, 38) being connected to a sliding carriage assembly (36, 38) capable of moving as a unit in the guide direction (F). According to the present invention, the two guide rails (24, 26) rest essentially without moving play against at least two counterpart support surfaces (GF24, GF24L, GF24R, GF26, GF26L, GF26R) of the guide support (14) extending essentially in the guide direction (F), two of the counterpart support surfaces (GF24, GF24L, GF24R, GF26, GF26L, GF26R) enclosing a predetermined angle, preferably of at most 90°, between them.Type: GrantFiled: March 13, 2007Date of Patent: July 20, 2010Assignee: Rexroth Star GmbHInventor: Siegfried Bauer
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Patent number: 7748905Abstract: A linear motion rolling guide unit with underside seals not falling away from a slider even when mounting the slider on a track rail. An engaging member comprises a protrusion having two faces extending parallel to the sliding direction of the slider, one facing the track rail and the other facing away the track rail. The protrusion comprises an inner hook protruding toward the track rail and an outer hook protruding in the opposite direction and being out of phase with the inner hook in the sliding direction of the slider, and moves through the fitting hole while being elastically deformed in the process of pressing the engaging member into the fitting hole after the inner hook has been engaged with the fitting hole, and returns to its original shape when the outer hook passes through the fitting hole, whereby the inner and outer hooks hold the underside seal.Type: GrantFiled: July 12, 2007Date of Patent: July 6, 2010Assignee: Nippon Thompson Co., Ltd.Inventor: Hideki Kuwabara
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Publication number: 20100158419Abstract: A sealing member for a rolling device is applied to a rolling device with inner and outer members and a plurality of rolling members between so the rolling members can roll to allow relative rotational or linear movement of the outer member with respect to the inner member. The sealing member includes an inner and outer lip parts that press the inner and outer members, respectively. The outer lip part is less rigid than the inner lip part. The sealing member may have a substantially circular shape and surround the inner member. Alternatively, the sealing member may have a substantially plate-like shape and extend in a direction of relative movement of the outer member with respect to the inner member. The sealing member for a rolling device configured as described above and a rolling device provided with the sealing member can be adequately used even in a hostile environment.Type: ApplicationFiled: February 5, 2008Publication date: June 24, 2010Applicant: THK CO. LTD.Inventor: Tomozumi Murata
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Patent number: 7740406Abstract: A linear motion guide system is disclosed in which a clearance between a slider and a guide rail is closed truly to clear foreign matter away from entering inside the system through any end of the slider traveling on the guide rail. Thus, the linear motion guide system is befitting to severe working environment where much foreign matter occurs. A highly-tight sealing unit is comprised of a cassette constituted with a front panel and an enclosure, sealing plates stowed into the cassette, lubrication plates each interposed between any two adjacent sealing plates, and a rear panel to close an open edge of the enclosure. The sealing plates are each composed of an intermediate spongy medium flanked by skin layers and impregnated with lubricant. The lubrication plates have pores filled with lubricant.Type: GrantFiled: April 11, 2007Date of Patent: June 22, 2010Assignee: Nippon Thompson Co., Ltd.Inventor: Shigeki Kakei
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Patent number: 7736059Abstract: A linear motion guide device includes a slider slidably attached onto a guide rail, an end cap and a wiper attached to the slider, the wiper includes one or more catches engaged with the end cap for anchoring the wiper to the end cap, and includes one or more spring-biased latches for resiliently engaging with the end cap and for detachably anchoring the wiper to the end cap and for allowing the wiper to be easily and readily attached to the end cap or disengaged from the end cap without additional tools, the wiper includes one or more levers for resiliently supporting the spring-biased latch.Type: GrantFiled: December 27, 2006Date of Patent: June 15, 2010Assignee: Hiwin Technologies Corp.Inventors: Tsung Jen Chen, Chiung Hui Tsai
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Patent number: 7717621Abstract: A linear motion guide system is disclosed in which a clearance between a slider and a guide rail is closed truly to clear foreign matter away from entering inside the system through any end of the slider traveling on the guide rail. Thus, the linear motion guide system is befitting to severe working environment where much foreign matter occurs. A highly-tight sealing unit is provided which is comprised of a cassette constituted with a front panel and an enclosure, a sealing plate stowed into the cassette, and a rear panel to close an open edge of the enclosure. The sealing plate is composed of an intermediate spongy medium flanked by skin layers, and lubricant is forcibly absorbed in pores or cells in the intermediate layer.Type: GrantFiled: March 22, 2007Date of Patent: May 18, 2010Assignee: Nippon Thompson Co., Ltd.Inventors: Shigeki Kakei, Takashi Yatsu, Hideaki Ogura
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Patent number: 7717622Abstract: The invention relates to a roller bearing for linear movements, said roller bearing comprising a guiding carriage which is essentially C-shaped in the cross-section thereof, is displaceably guided on a guiding rail in the longitudinal direction thereof, and comprises two lateral limbs. The carrier body of the roller bearing is supported in the region of each lateral limb in such a way that it can be displaced on the guiding rail by means of at least one series of rolling bodies. The series of rolling bodies respectively comprises a load-transmitting row of rolling bodies, which engages with a load-carrying running path of the carrier body and a load-carrying running path of the guiding rail, in addition to an inverted row of rolling bodies and two defecting rows of rolling bodies. In order to form the load-carrying running path of the carrier body, a running path element is provided parallel to the longitudinal direction of the guiding rail.Type: GrantFiled: November 10, 2005Date of Patent: May 18, 2010Assignee: Schaeffler KGInventor: Thomas Winkler
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Patent number: 7686514Abstract: A linear motion guide device includes a slider slidably attached onto a guide rail, an end cap and a wiper device attached to each side of the slider, the wiper device includes two wiping members to be easily and detachably attached to each of the end cap without tools and fasteners. The wiping members each include one or more projections or one or more latches for engaging with the end cap and for anchoring and positioning the wiping members to the end cap without tools and fasteners. The end cap includes a space separated into two chambers and for receiving the wiping members respectively. The wiping members each include a soft wiping portion for resiliently engaging with the guide rail.Type: GrantFiled: April 4, 2007Date of Patent: March 30, 2010Assignee: Hiwin Technologies Corp.Inventors: Shih-Hsin Hung, Tsung-Jen Chen
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Publication number: 20100074564Abstract: A wiper seal is less in sliding resistance that is encountered when the seal slides over a raceway surface of a guide rail, better in wear-proof quality, rich in durability, and further easy to steadily install it to a slider. The wiper seal is installed on one end of the slider in a linear motion guide system to wipe away foreign materials adhered on the guide rail. The wiper seal is made of polyester polyurethane foam having a reticular skeleton texture of three-dimensional construction including open-cells therein, the polyester polyurethane foam being squeezed or compressed into from ¼ to 1/20 in thickness to form a compact blank of three-dimensional construction having porosity therein. The wiper seal is set to come into sliding contact with the guide rail 1 to exert a positive interference of from 0.1 mm to 0.05 mm.Type: ApplicationFiled: December 4, 2008Publication date: March 25, 2010Applicant: NIPPON THOMPSON CO LTD.Inventors: Toshiaki GEKA, Hideaki Ogura, Shigeki Kakei, Tamotsu Iwata
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Patent number: 7658544Abstract: A linear motion guide device includes a slider slidably attached onto a guide rail, an end cap and a wiper attached to the slider, the wiper includes one or more pegs engaged with the end cap for anchoring the wiper to the end cap, and includes one or more latches for resiliently engaging with the end cap and for detachably anchoring the wiper to the end cap and for allowing the wiper to be easily and readily attached to the end cap or disengaged from the end cap without additional tools, the end cap includes a shoulder formed in the outer peripheral portion, and the wiper includes an outer peripheral fence for engaging with the peripheral shoulder of the end cap and for anchoring the wiper to the end cap.Type: GrantFiled: March 20, 2007Date of Patent: February 9, 2010Assignee: Hiwin Technologies Corp.Inventors: Tsung Jen Chen, Chiung Hui Tsai
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Patent number: 7651272Abstract: A method of assembling an air bearing, the air bearing having a guide on a fixed side, and a slider having a pair of opposing members arranged on opposite sides of the guide, the slider being float-supported so as to be able to move relative to the guide, the method having: contacting a first opposing member of the pair of opposing members to the guide; supplying compressed air of a predetermined pressure between the first opposing member and the guide contacting each other, so as to form a temporary gap twice as large as a target bearing gap between the first opposing member and the guide; maintaining contact between the guide and a second opposing member of the pair of opposing members; and supplying compressed air of a predetermined pressure between the first opposing member and the guide as well as the second opposing member and the guide, so as to form respective target bearing gaps between first and second opposing members and the guide, in place of the temporary gap.Type: GrantFiled: January 3, 2007Date of Patent: January 26, 2010Assignee: Fanuc LtdInventors: Tomohiko Kawai, Kenzo Ebihara, Hiroshi Minami
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Publication number: 20090310892Abstract: A linear motion guide device includes a slider slidably attached onto a guide rail, two end caps attached to two ends of the slider and each having a channel formed between two legs, two sealing members attached to the legs and located at two opposite side portions of the guide rail and each having a wiping member for engaging with the guide rail, and two further sealing members changeably attached to the legs and located farther away from the guide rail than the previous sealing members for making different sealing structures pr conditions with the guide rail, the end caps each include two anchoring slots formed in each leg for attaching the sealing members.Type: ApplicationFiled: June 17, 2008Publication date: December 17, 2009Inventors: Jen-Sheng Chen, Min Yao Hsieh
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Publication number: 20090290818Abstract: A cover strip for a linear guide rail, wherein a slide block is slidably disposed on the guide rail, a cover strip covers an upper surface of the guide rail, each of two sides of the guide rail extend outwards to form an extending surface with large slope, and each extending surface extends downward to form a flange, two sides of the central portion of the cover strip are provided with extending portions, and each extending portion extends downwards to form an engaging portion, the structures extending from two sides of the cover strip are configured in the shape of the corresponding structures of the guide rail, and a free end of each engaging portion extends downward to cover the ridge of each flange in such a manner that the cover strip can be positioned on the guide rail assuredly and stably.Type: ApplicationFiled: May 26, 2008Publication date: November 26, 2009Inventor: Tsung-Jen Chen
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Patent number: 7614790Abstract: A self-lubricating assembly for a linear driving device comprises an oil applying subassembly, an oil transmitting subassembly and an oil container. The oil transmitting subassembly transmits lubricating oil from the oil container to the oil applying subassembly, and the oil applying subassembly is driven by the linear driving device to perform lubricating action automatically. The oil container is provided for storing lubricating oil to prolong lubricating time of the linear driving device.Type: GrantFiled: May 15, 2007Date of Patent: November 10, 2009Assignee: Hiwin Technologies Corp.Inventors: Shin-Tai Liu, Min-Yao Hsieh
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Publication number: 20090257692Abstract: The guide rail has a longitudinal groove arranged along its upper rail side and a cover strip which closes off the groove and bears flush against the plane of the upper rail side. The spacing between opposite groove walls of the groove is smaller than the leveled cover strip. In order to retain the cover strip, each of the groove walls are provided with an undercut and retaining strips provided at both longitudinal sides of the cover strip engage into the undercuts. The cover strip is plastically curved around an axis which is parallel to the guide rail, such that the curved cover strip is smaller than the spacing between the groove walls, and after being inserted into the longitudinal groove, the curved cover strip is leveled by means of plastic deformation, such that the retaining strips are displaced into the undercuts.Type: ApplicationFiled: February 19, 2007Publication date: October 15, 2009Applicant: SCHAEFFLER KGInventor: Michael Sattler
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Publication number: 20090245701Abstract: By reducing the component count, a more compact linear motion guide unit having sealing structures capable of maintaining high sealing performance between slider and guide rail over a long term is realized. A rubber-made end seal, attached to each end face of a slider slidably straddling a guide rail, has a lip portion integrally formed on a contact face with the guide rail, and a recessed portion formed in a face opposite to a mounting face attached to the slider. A positional relationship is determined such that the lip portion is located closer to the slider than the recess bottom face is. An oil-impregnated wiper seal is mounted in the recessed portion of the end seal. A scraper is disposed along the outer side of the wiper seal mounted in the recessed portion, so that the wiper seal is fixedly interposed between the scraper and the recess bottom face.Type: ApplicationFiled: March 25, 2009Publication date: October 1, 2009Applicant: Nippon Thompson Co., Ltd.Inventors: Hideaki Ogura, Toshiaki Geka
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Patent number: 7578619Abstract: A linear guide has an under seal which is arranged on an under surface of a slider main body along an axial direction, has an axial end portion held by an end cap, comes in slide contact with a guide rail, and seals the under surface of the slider main body. In the linear guide, the under seal has an elastic lip portion, in a portion of the under seal coming in contact with the slider main body, which has a length approximately equal to an axial length of the slider main body and elastically comes in contact with the slider main body.Type: GrantFiled: March 31, 2005Date of Patent: August 25, 2009Assignees: NSK Ltd., NSK Precision Co., Ltd.Inventor: Takumi Nakagawa
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Publication number: 20090161997Abstract: A rotating flow diverter has a lubricated sealed bearing assembly for isolating bearing elements from wellbore fluids under pressure. The sealed bearing assembly is supported between an outer bearing housing and an axially rotatable quill. The bearing assembly further has bearing elements with a bearing lubricant under pressure and a seal assembly. The seal assembly has at least one sealing element which comprises a body, the body having an outer peripheral wall, an inner sealing surface having a plurality of sealing lips and an annular cavity, and a loading ring for compressionally fitting within the annular cavity to urge the sealing surface radially inwardly for sealing engagement with tubulars.Type: ApplicationFiled: June 11, 2008Publication date: June 25, 2009Applicant: OPTIMAL PRESSURE DRILLING SERVICES INC.Inventors: Jim BEAUCHAMP, Jed WOOD
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Patent number: 7549801Abstract: A fluid sealing mechanism for sealing fluid being fed into a fluid pressure pocket formed between sliding surfaces which are formed on the opposing surfaces of an article being supported and a support for supporting the article, wherein a ring groove being fitted with a resilient ring for sealing fluid is made in the sliding surface of the support. Under a state where a regulation ring for preventing the resilient ring from jumping out of the ring groove is fitted over the re-silient ring, the regulation ring is fitted in the ring groove along with the resilient ring. When the fluid fed into the fluid pressure pocket reaches a specified pressure, the regulation ring comes into pressure contact with the sliding surface of the support along with the resilient ring, thus preventing the resilient ring from jumping out.Type: GrantFiled: February 5, 2004Date of Patent: June 23, 2009Assignee: Yugen Kaisha Newly LaboratoryInventors: Takao Arai, Kouya Watanabe, Shumpei Ohtsuka
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Publication number: 20090148083Abstract: A movement guiding device for a vacuum environment is provided so that the device is able to suppress a base oil vaporized in the vacuum environment from leaking to the outside. The movement guiding device for a vacuum environment according to the present invention comprises a track member (1) having a rolling-element rolling part (1a), a moving member (2) having a rolling-element circulation passage containing a loaded rolling-element rolling part (2a) facing the rolling-element rolling part (1a) and being movable relatively to the track member (1), a plurality of rolling elements (3) arranged in the rolling-element circulation passage, clearance seals (5, 6) arranged with the moving member (2) and sealing a clearance formed between the track member (1) and the moving member (2) without coming in contact with the track member (1).Type: ApplicationFiled: October 31, 2005Publication date: June 11, 2009Applicant: THK CO., LTD.Inventors: Hidekazu Michioka, Masahiko Yoshino
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Patent number: 7488110Abstract: End-plates for linear motion sliders and linear motion sliders for use with the end-plates, particularly an end-plate for linear motion sliders and a linear motion slider for use with the end-plate, in which first and second support portions, which contact and support the outer surfaces of balls, are provided in the circumferential inner surface of the end-plate, and a space is defined between the outer surfaces of the balls and a junction surface between the first and second support portions. Therefore, the stiffness of the end-plate is increased, and the balls can stably circulate in a slider, thus reducing noise and vibration. Furthermore, the space serves to keep lubricant therein, whereby the balls can more efficiently circulate in the slider.Type: GrantFiled: May 22, 2006Date of Patent: February 10, 2009Assignee: SBC Linear Co., Ltd.Inventors: Jin-Kwoan Lee, Chang-Won Yang
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Patent number: 7478981Abstract: Disclosed herein is a contamination protection apparatus that includes a concealed linear glandular seal for providing continuous protection along an entire length of a movable table of a precision apparatus such as testing and metrology machines, laser machines, biomedical equipment, and precision fabricating machines. The disclosed glandular seal is formed on an inner structure of the protective apparatus, which includes a plurality of mechanical translation stages positioned in the inner structure and two normally closed linear parts of the glandular seal attached to respective mechanical translation stages. The linear parts interfere with each other and are opened by movement of a mechanical translation stage saddle.Type: GrantFiled: December 7, 2006Date of Patent: January 20, 2009Assignee: Nutec Components Inc.Inventors: Rene H. Schnetzler, Young A. Yoon
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Publication number: 20090010577Abstract: The present invention provides a structure for closing a track rail mounting hole, which prevents a closing cap from being press-fitted with an inclined state into the rail mounting hole, thereby being capable of positively preventing formation of a gap between the rail mounting hole and the closing cap. The closing cap (70) includes: a fitting portion (71) having an outer diameter larger than an inner diameter of the rail mounting hole (11b), to be press-fitted into the rail mounting hole (11b); and a leading end portion (72) to be inserted into the rail mounting hole (11b) before press-fitting the fitting portion (71) into the rail mounting hole (11b), for provisionally positioning the closing cap (70) with respect to the rail mounting hole (11b).Type: ApplicationFiled: December 15, 2005Publication date: January 8, 2009Applicants: THK CO., LTD., THK GMBHInventors: Katsuya Iida, Yoshiaki Saito, Masahiro Kumagai, Reinhard G. Welle
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Patent number: 7465091Abstract: A linear guide device comprises a rail, at least a slide member and multiple rows of rolling elements. The slide member comprises a rigid body; a bottom frame; a pair of end caps and a pair of reinforce plates. The rail and rigid body provide multiple rows of raceways opposed for the rolling elements. The bottom frame contains a plurality of lubricant reservoirs with lubrication pads inside and directly outstretch from the openings of said lubricant reservoirs to contact with the rolling elements in the raceway zone to supply lubricant on the rolling elements continuously. There are passages or tubes, having lubricating string inside, connecting the extending lubricant reservoirs. Two reinforce plates, each having two extending plates folded and stretched to the bottom of the two leg portions of the rigid body, and are attached on two end caps.Type: GrantFiled: March 20, 2006Date of Patent: December 16, 2008Assignee: Chiefiech Precision Co., Ltd.Inventors: Ming-Che Hsu, Lih-Fen Chen
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Patent number: 7465094Abstract: A linear guide apparatus is provided with two (upper and lower) tracks of rolling element race tracks formed on a guide rail and of rolling element race tracks formed on a slider main body so as to oppose the rolling element race tracks on the respective sides, i.e., four tracks of race tracks in total. A recess is provided below the lower rolling element race track on the slider main body and the end cap fixed to an end face of the slider main body is provided with a projection that engages with the recess so as to determine a position of the end cap.Type: GrantFiled: September 15, 2006Date of Patent: December 16, 2008Assignee: NSK Ltd.Inventors: Xu Wei, Masaru Akiyama
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Publication number: 20080304773Abstract: A linear motion guide device includes a slider slidably attached onto a guide rail, an end cap attached to each side of the slider, a cover band engaged onto the upper portion of the guide rail and having an end portion extended out of the end portion of the guide rail, and a block attached to the end portion of the guide rail and having an opening for receiving the end portion of the cover band, a wedge member is slidably engaged into the opening of the block and includes an inclined surface for slidably engaging with the inclined surface of the block and for securing the end portion of the cover band to the block when the wedge member is engaged into the opening of the block, a fastener may force the wedge member to secure the end portion of the cover band to the block.Type: ApplicationFiled: June 5, 2007Publication date: December 11, 2008Inventors: Tsung Jen Chen, Min Yao Hsieh
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Patent number: 7458720Abstract: A linear motion rolling guide unit capable of being adapted to an ultra-reduction in size. A recessed portion 23 is provided in each of the side faces 18 of a track rail R below a lower raceway face 2 and extends parallel to the axis of the track rail R. An underside seal 24 has a seal portion 24d facing the recessed portion 23. Engaging hooks 24c are provided at the two ends of the underside seal 24. End caps 3, 4 have engaging holes 26 engaging with the respective engaging hooks 24c. The underside seals 24 and the end caps 3 and 4 are each formed of a synthetic resin in one piece.Type: GrantFiled: April 17, 2006Date of Patent: December 2, 2008Assignee: Nippon Thompson Co., Ltd.Inventor: Hideki Kuwabara
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Publication number: 20080292226Abstract: A linear motion guide device includes a slider and two end caps attached to side portions of the slider, and two holding assemblies attached to two side legs of the slider and the end caps for forming four endless ball guiding channels and for smoothly receiving four chains of rolling members, the holding assemblies each include two L-shaped holding devices and a retaining device attached to the leg of the slider and the end caps, and the holding devices each include two detachable halves for allowing the holding devices to be easily and quickly molded and for allowing the holding devices to be easily disengaged from the mold devices.Type: ApplicationFiled: May 22, 2007Publication date: November 27, 2008Inventors: Scotte Chen, Tsung Jen Chen
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Publication number: 20080279489Abstract: A linear motion guide unit makes sure of smooth sliding movement of a slider over a guide rail even under harsh working environment in which much foreign materials or contaminants may occur. Load-carrying races are kept free of foreign materials that have already creped into the inside of the slider. An inside seal is installed in a recess open downward in the slider. The inside seal is composed of a metallic core and a sealing member that includes a joint portion secured to the metallic core and a major portion integral with the joint portion. The joint portion has a mating surface to come into engagement with a downward surface deep inside the recess cut in a carriage while the major portion includes a first lip to come into sliding engagement with a top surface of the guide rail, a second lip come into abutment against an inward sidewall of the recess, and third lip to come into abutment against a downward surface deep inside a recess cut in an end cap.Type: ApplicationFiled: April 23, 2008Publication date: November 13, 2008Applicant: NIPPON THOMPSON CO., LTDInventor: Masatoshi KONDO
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Publication number: 20080260306Abstract: A linear motion rolling guide unit, which has underside seals prevented from falling off a slider, comprises a slider S having a pair of end caps 2 secured at ends of a casing 1, and underside seals 6 provided between the pair of end caps 2 having engaging projections 12. Insertion holes 10 are formed in the underside seals 6 and engaged with the engaging projections 12 to secure the underside seals 6 to the slider S. Fallout-inhibiting protrusions 9 are provided at ends of each underside seal 6 in the longitudinal direction. The slider S has holding portions 14 each having a hole or a recess into which each of the fallout-inhibiting protrusions 9 is inserted when the underside seal is secured to the slider S. A gap is maintained between the holding portion 14 having the hole or the recess and the outer periphery of the fallout-inhibiting protrusion 9.Type: ApplicationFiled: March 13, 2008Publication date: October 23, 2008Applicant: Nippon Thompson Co., Ltd.Inventor: Hideki Kuwabara
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Patent number: 7435000Abstract: A guide carriage of a linear roller bearing, having at least one endless raceway for rolling bodies (9), and having a carrying body (1), on the two longitudinal sides of which in each case one carrying section (2, 3) and one return section (5, 6) of the endless raceway is provided, the carrying section (2, 3) being provided rolling bodies (9) which roll under load and the return section (5, 6) being provided for rolling bodies (9) which return without load, and having head pieces (13) which are arranged on end sides of the carrying body (1) and in each case have one deflection section (11, 12) which connects the return section (5, 6) to the carrying section (5, 6) a lubricant channel (24) being provided for the supply of lubricant, which lubricant channel (24) can be connected to the raceway of the rolling body (9) via a valve (30), the valve (30) having a slot (33) which is provide for the passage of lubricant, crosses the cross section of the lubricant channel (24) and is delimited by slot faces (34), the sType: GrantFiled: June 23, 2004Date of Patent: October 14, 2008Assignee: INA-Schaeffler KGInventors: Lothar Neufang, Peter Keller
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Publication number: 20080247688Abstract: A linear motion guide device includes a slider slidably attached onto a guide rail, an end cap and a wiper device attached to each side of the slider, the wiper device includes two wiping members to be easily and detachably attached to each of the end cap without tools and fasteners. The wiping members each include one or more projections or one or more latches for engaging with the end cap and for anchoring and positioning the wiping members to the end cap without tools and fasteners. The end cap includes a space separated into two chambers and for receiving the wiping members respectively. The wiping members each include a soft wiping portion for resiliently engaging with the guide rail.Type: ApplicationFiled: April 4, 2007Publication date: October 9, 2008Inventors: Shih-Hsin Hung, Tsung-Jen Chen
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Publication number: 20080159669Abstract: A linear motion guide device includes a slider slidably attached onto a guide rail, an end cap and a wiper attached to the slider, the wiper includes one or more catches engaged with the end cap for anchoring the wiper to the end cap, and includes one or more spring-biased latches for resiliently engaging with the end cap and for detachably anchoring the wiper to the end cap and for allowing the wiper to be easily and readily attached to the end cap or disengaged from the end cap without additional tools, the wiper includes one or more levers for resiliently supporting the spring-biased latch.Type: ApplicationFiled: December 27, 2006Publication date: July 3, 2008Inventors: Tsung Jen Chen, Chiung Hui Tsai
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Publication number: 20080157607Abstract: The present invention relates to a linear unit comprising at least one guide rail 12, at least one substantially U shaped carriage 40 displaceable on the guide rail 12, and a transverse support segment 42 and two lateral leg segments 44, where the segments 42, 44 partly enclose the guide rail 12, further a playfree bearing configured between the guide rail 12 and the carriage 40 and at least two bearing elements and at least two bearing surfaces 14 constituted at the guide rail 12 to brace and guide the bearing elements, and means to adjust the bearing in playfree manner. In the invention, the bearing elements are designed in a manner that they are rotatable relative to the guide rail 12 and the carriage 40 to adjust the bearing in playfree manner. The rotatable design of the bearing elements of the invention assures that they automatically align themselves with respect to the corresponding bearing surfaces when the bearing is being adjusted.Type: ApplicationFiled: November 27, 2007Publication date: July 3, 2008Inventors: Hubert Scheich, Hugo Isert
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Publication number: 20080144980Abstract: Linear rolling bearing, having a guide carriage (2) which is mounted by means of rolling bearings on a guide rail (1), and having at least one approximately u-shaped scraper (3), arranged at the end side on the guide carriage (2), for scraping foreign objects such as chips, dust and cooling liquids from the guide rail, with the scraper (3) being in scraping contact, by means of its scraping system (16), preferably sealing lip (16a) or sealing edge, with the guide rail (1), wherein the scraper (3) has a preferably plate-shaped seal (16a) which is provided with the scraping system (16) and at whose points, for example corners, which are of increased stiffness on account of the shape of the seal, are provided targeted material weakenings which increase the flexibility of the scraping system at said points.Type: ApplicationFiled: December 17, 2005Publication date: June 19, 2008Applicant: SCHAEFFLER KGInventors: Peter Keller, Dietmar Rudy
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Publication number: 20080138001Abstract: The invention relates to a roller bearing for linear movements, said roller bearing comprising a guiding carriage which is essentially C-shaped in the cross-section thereof, is displaceably guided on a guiding rail in the longitudinal direction thereof, and comprises two lateral limbs. The carrier body of the roller bearing is supported in the region of each lateral limb in such a way that it can be displaced on the guiding rail by means of at least one series of rolling bodies. The series of rolling bodies respectively comprises a load-transmitting row of rolling bodies, which engages with a load-carrying running path of the carrier body and a load-carrying running path of the guiding rail, in addition to an inverted row of rolling bodies and two defecting rows of rolling bodies. In order to form the load-carrying running path of the carrier body, a running path element is provided parallel to the longitudinal direction of the guiding rail.Type: ApplicationFiled: November 10, 2005Publication date: June 12, 2008Applicant: SCHAEFFLER KGInventor: Thomas Winkler
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Publication number: 20080131036Abstract: Linear rolling bearing, having a guide carriage (2) which is mounted by means of rolling bearings on a guide rail (1), and having a scraper (3), arranged at at least one of the two end sides of the guide carriage (2), for scraping foreign objects such as chips, dust and cooling liquids from the guide rail, with the scraper (3) being in scraping contact, by means of its scraping system (16), preferably sealing lip (16a) or sealing edge, with the guide rail (1), wherein the scraper (3) has a housing (17) which optionally holds one or more preferably plate-shaped, removable seals (18), with the seal (18) being provided with the scraping system (16).Type: ApplicationFiled: December 17, 2005Publication date: June 5, 2008Applicant: SCHAEFFLER KGInventors: Peter Keller, Dietmar Rudy
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Publication number: 20080131037Abstract: Linear rolling bearing, having a guide carriage (2) which is mounted by means of rolling bearings on a guide rail (1), and having a scraper (3), arranged at at least one end side of the guide carriage (2), for scraping foreign objects such as chips, dust and cooling liquids from the guide rail (1), with the scraper (3) being in scraping contact, by means of its scraping system (16), preferably sealing lip (16a) or sealing edge, with the guide rail (1), wherein the scraper (3) has a first stop (31) for abutment against the guide rail (1), with the abutment of the first stop (31) indicating an impermissible position of the scraper (3) on the guide rail (1).Type: ApplicationFiled: December 17, 2005Publication date: June 5, 2008Applicant: SCHAEFFLER KGInventors: Peter Keller, Dietmar Rudy
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Patent number: 7380988Abstract: A linear motion guide device includes a slide having a housing, and two end caps secured to sides of the housing and each including a space aligned with a chamber of the housing, for slidably receiving an elongate track rail. One or more dust shields each includes one end detachably anchored to one of the end caps with such as one or more catches, and the other end detachably anchored to the other end cap with such as one or more latches or fingers, for detachably securing the dust shield to the end caps and the housing without additional fasteners. The end caps and the housing each includes a recess for receiving and seating the dust shield.Type: GrantFiled: November 15, 2005Date of Patent: June 3, 2008Assignee: Hiwin Technologies Corp.Inventors: Scotte Chen, Yu Wen Tsai
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Patent number: 7374339Abstract: A seal device fixed to an end portion of a slider of a guide device includes: a casing; a plurality of seal members; and elastic members, wherein each seal member has a recess portion in which a rail penetrates. An inner circumferential face of the recess portion comes into contact with an outer surface of the rail when the seal member is pushed onto one side of the rail by the elastic members. The plurality of seal members are arranged in the casing in such a manner that when a seal portion of one seal member is pushed by the elastic member and contacted with one side of the rail, a seal portion of the next seal member is pushed by the elastic member and contacted with the other side of the rail.Type: GrantFiled: February 9, 2005Date of Patent: May 20, 2008Assignee: THK Co., Ltd.Inventors: Hiroaki Mochizuki, Tetsuhiro Nishide
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Publication number: 20080089622Abstract: A linear guide device includes a guide base with two lateral surfaces and a top surface covered with a cover strip, a rotor that wraps around at least a portion of the guide base, so that the rotor is supported on the guide base as it moves longitudinally along its longitudinal axis, and at least one scraper unit installed on the rotor on its end faces extending orthogonally to the longitudinal axis, wherein the scraper unit includes a main body and at least one sealing lip, which is at least partially in contact with the top surface and the lateral surfaces of the guide base. The sealing lip of the scraper unit is equipped, at least partially, with at least one reinforcing element.Type: ApplicationFiled: August 14, 2007Publication date: April 17, 2008Inventor: Alfred Haub
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Publication number: 20080036270Abstract: In one aspect of the invention, a degradation assembly comprises a holder. The holder is attached to a driving mechanism and comprises a longitudinal central bore. A pick comprises a body intermediate a shank and an impact tip, and the shank is disposed in the central bore of the holder. The impact tip comprises an impact surface diamond or cubic boron nitride. At least one rolling element is disposed intermediate an inner bore surface and the shank, and is adapted for low-friction rotation with respect to both the inner bore surface and the shank.Type: ApplicationFiled: April 30, 2007Publication date: February 14, 2008Inventors: David R. Hall, Ronald B. Crockett, Jeff Jepson, Francis Leany