Combined With Seal Or Guard Patents (Class 384/15)
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Publication number: 20080028620Abstract: A detachable cover for a hand-held power tool has a sliding guide, a locking device configured to hold the cover in a closed position, and a handle, the handle being configured as a tilt-thrust element actable upon with a manual actuating force, the tilt-thrust element being tilted around a horizontal axis and forming an acute angle with a sliding direction of the sliding guide, which acute angle is located in front of a horizontal axis as viewed in a sliding-open direction.Type: ApplicationFiled: July 30, 2007Publication date: February 7, 2008Inventor: Albrecht Kreissig
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Publication number: 20080013870Abstract: 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: ApplicationFiled: July 12, 2007Publication date: January 17, 2008Applicant: Nippon Thompson Co., Ltd.Inventor: Hideki Kuwabara
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Patent number: 7293916Abstract: A linear guidance device has an elongated guiding rail having at least one throughgoing opening extending from the upper surface for receiving a mounting element for mounting the guiding rail on a lower component. A guidance car is displaceably guided on the guiding rail in a longitudinal direction of the guiding rail. A cover band can be attached to an upper surface of the guiding rail, the cover band formed so that a limiting line of a free end of the cover band is formed so that when a point of the cover band coincides with a boundary line of the throughgoing opening in a selected direction, a portion of the limiting line is arranged completely outside of a boundary line of the throughgoing opening.Type: GrantFiled: April 22, 2004Date of Patent: November 13, 2007Assignee: Bosch Rexroth AGInventor: Bruno Hotz
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Publication number: 20070242906Abstract: 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: ApplicationFiled: April 11, 2007Publication date: October 18, 2007Applicant: Nippon Thompson Co., Ltd.Inventor: Shigeki Kakei
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Publication number: 20070230836Abstract: In a cover arrangement for a machine tool for covering guide and drive structures, comprising a pleated wall arrangement which can be expanded and compressed upon movement of a carriage between which and a machine wall it is connected. The pleated wall structures is provided with armor lamellas which are anchored to the pleat sections of the wall structures and over-lap for covering the pleated wall structure which is movably supported on guide tracks which are disposed in planes extending at an obtuse angle facilitating installation and removal of the cover arrangement.Type: ApplicationFiled: March 28, 2007Publication date: October 4, 2007Inventor: Michael Schirling
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Publication number: 20070223845Abstract: 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: ApplicationFiled: March 22, 2007Publication date: September 27, 2007Applicant: Nippon Thompson Co., Ltd.Inventors: Shigeki Kakei, Takashi Yatsu, Hideaki Ogura
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Patent number: 7255479Abstract: In a linear guide apparatus including an axially extending guide rail, a slider engaged with the guide rail, and a plurality of rolling elements loaded into the slider, the linear guide apparatus further includes a sealing device fixed to the slider in slidable contact with the guide rail for sealing a clearance existing between the guide rail and the slider, in which the sealing device includes: a lubricant-containing polymer member formed of a synthetic resin containing a lubricant, and having a contact portion contacting with the guide rail to surround the guide rail, both wing portions, a connecting portion connecting the wing portions to be C-shaped substantially, and a pair of first recesses formed in the respective wing portions for fixing the lubricant-containing polymer member to the slider; a first plate member fitted to the lubricant-containing polymer member opposed to the slider; and a pair of first cylindrical members inserted to the respective first recesses.Type: GrantFiled: March 20, 2006Date of Patent: August 14, 2007Assignee: NSK Ltd.Inventors: Toru Tsukada, Yutaka Igarashi, Soichiro Kato, Toshikazu Yabe, Fumio Ueki
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Patent number: 7241047Abstract: 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: May 26, 2005Date of Patent: July 10, 2007Assignee: Rexroth Star GmbHInventor: Siegfried Bauer
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Patent number: 7229213Abstract: In a linear guide device including: a rail having on either side surface thereof a track recess with a track surface formed thereon; a rail cover covering a rail upper surface of the rail; a saddle-like slider moving linearly on the rail; and a rolling member circulating through a connection path provided in the slider and adapted to roll on the track surface of the rail, the rail cover is equipped with a side edge portion having an engagement portion, an upper track surface serving as an engagement surface is provided in a lower portion of an upper side surface of the rail, the engagement surface being a slope gradually diminishing in the rail width direction downwardly from the upper side surface, and an engagement portion of the rail cover is engaged with the engagement surface, whereby it is possible to achieve an increase in the speed of the rail grinding work for allowing engagement of the rail cover covering the rail upper surface of the liner guide device.Type: GrantFiled: October 7, 2004Date of Patent: June 12, 2007Assignee: NSK, Ltd.Inventors: Toshiaki Yamaguchi, Soichiro Kato, Xu Wei
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Patent number: 7207720Abstract: An apparatus includes a static gas bearing provided upon a first object and configured to form a gas layer between the first object and a second object by use of gas supplied thereto, and to support the first object movably relative to the second object, a plurality of exhaust grooves provided upon the first object and configured to surround the static gas bearing, and a plurality of exhaust flowpassages provided through the first object, connecting to a respective one of the plurality of exhaust grooves, and configured to exhaust gas from a respective one of the plurality of exhaust grooves.Type: GrantFiled: November 19, 2004Date of Patent: April 24, 2007Assignee: Canon Kabushiki KaishaInventors: Choshoku Sai, Kotaro Akutsu
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Patent number: 7188542Abstract: A liner motion device has a liner motion element fitted on a shaft and moving straight along the shaft; a plurality of balls which are retained in a rolling element groove formed on the inner side of the liner motion element and roll over between the rolling element groove and the shaft; a separator interposed between the rolling elements; and, a circulating path formed in the liner motion element through which the rolling elements are circulated from one end of the rolling element groove to the other, wherein the separator is a product of a synthetic resin containing a lubricating oil in an amount of 3 to 25% by volume.Type: GrantFiled: December 16, 2004Date of Patent: March 13, 2007Assignee: NSK Ltd.Inventors: Toshikazu Yabe, Hiroyuki Ito, Tuyoshi Saito, Toyohisa Yamamoto
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Patent number: 7153027Abstract: In a linear guide device including: a rail having on either side surface thereof a track recess with a track surface formed thereon; a rail cover covering a rail upper surface of the rail; a saddle-like slider moving linearly on the rail; and a rolling member circulating through a connection path provided in the slider and adapted to roll on the track surface of the rail, the rail cover is equipped with a side edge portion having an engagement portion, an upper track surface serving as an engagement surface is provided in a lower portion of an upper side surface of the rail, the engagement surface being a slope gradually diminishing in the rail width direction downwardly from the upper side surface, and an engagement portion of the rail cover is engaged with the engagement surface, whereby it is possible to achieve an increase in the speed of the rail grinding work for allowing engagement of the rail cover covering the rail upper surface of the liner guide device.Type: GrantFiled: July 10, 2006Date of Patent: December 26, 2006Inventors: Toshiaki Yamaguchi, Soichiro Kato, Xu Wei
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Patent number: 7150564Abstract: An improved structure of linear sliding rail circulating device is primarily composed of: a rail, which laterally forms a sliding path; a sliding base, which slides to operate along said rail, and is provided with an aperture at the interior for receiving the rolling elements; and combination ends, which are circulating system correspondingly formed subject to the H-shape or U-shape rail for connecting to the front and rear ends of the sliding base to serve as closes of the rolling path of the rolling elements and U turns for the rolling elements. Accordingly, rails of various types can be partially altered common components, thereby easing device maintenance and minimizing manufacture costs.Type: GrantFiled: October 12, 2004Date of Patent: December 19, 2006Assignee: Linear Tech Co., Ltd.Inventor: Mao-Tu Lee
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Patent number: 7134668Abstract: A differential pumping seal apparatus includes a differential pumping seal for sealing a first space and a second space from each other in a non-contact manner, and a back up seal mechanism for sealing the first space and the second space from each other in a contact manner. The back up seal mechanism is operated to seal the first space and the second space from each other only when the differential pumping seal is stopped or while operation of said differential pumping seal is stopped.Type: GrantFiled: October 23, 2002Date of Patent: November 14, 2006Assignee: Ebara CorporationInventor: Hiroyuki Shinozaki
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Patent number: 7118046Abstract: In a sliding structure in which a shaft member is retained slidably in a guide hole, the lack of an oil film caused by the edge contact of the shaft member to which a pressing load in the axial direction is applied is prevented. With the fact being taken into account that end portions 25c1 and 25c2, which are always in slidable contact with a side surface 1232a of a guide hole 1232, of a side surface 25c of a shaft member 251 are the partial edge portion, a plurality of labyrinth grooves 2501 and 2502 are formed in the end portions 25c1 and 25c2, respectively, thereby it is possible for an oil film to cover the entire contact portion without increasing the groove width extremely. Because the groove width is not increased extremely, the length of the sliding portions can be ensured.Type: GrantFiled: January 20, 2004Date of Patent: October 10, 2006Assignee: Denso CorporationInventors: Tetsuya Yoshimura, Shuichi Matsumoto
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Patent number: 7066649Abstract: In an actuator, displacement resistance in axial movement of a slider is reduced to improve durability and enhance maintainability. At each side of the actuator, a slit is made between a top cover and a side cover. Magnetic bodies are provided on the surfaces of both side walls of the slit which face a fixing block of a slider and a magnetic fluid with a viscosity, surface tension, etc. is held between the magnetic bodies. At each side, the fixing block of the slider axially moves along the slit which is closed by the magnetic bodies.Type: GrantFiled: March 30, 2004Date of Patent: June 27, 2006Assignee: SMC CorporationInventors: Shigekazu Nagai, Akio Saitoh
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Patent number: 7048443Abstract: In a linear guide apparatus including an axially extending guide rail, a slider engaged with the guide-rail, and a plurality of rolling elements loaded into the slider, the linear guide apparatus further includes a sealing device fixed to the slider in slidable contact with the guide rail for sealing a clearance existing between the guide rail and the slider, in which the sealing device includes a lubricant-containing polymer member formed of a synthetic resin containing a lubricant, and having a contact portion contacting with the guide rail to surround the guide rail, both wing portions, a connecting portion connecting the wing portions to be C-shaped substantially, and a pair of first recesses formed in the respective wing portions for fixing the lubricant-containing polymer member to the slider; a first plate member fitted to the lubricant-containing polymer member opposed to the slider; and a pair of first cylindrical members inserted to the respective first recesses.Type: GrantFiled: April 27, 2005Date of Patent: May 23, 2006Assignee: NSK Ltd.Inventors: Toru Tsukada, Yutaka Igarashi, Soichiro Kato, Toshikazu Yabe, Fumio Ueki
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Patent number: 6902322Abstract: A linear guide bearing apparatus has a guide rail including a first raceway groove; a movable element including a second raceway groove and a rolling element return groove connected continuously with the second raceway groove through curved grooves respectively formed in the two end portions of the second raceway groove, the movable element being movably fitted with the guide rail; a plurality of rolling elements loaded in a circulation passage including the first raceway groove, the second raceway groove, the curved grooves, and the rolling element return groove for moving the movable element along the guide rail; and, an under-seal disposed in the movable element for sealing a space between the guide rail and the movable element, wherein the under-seal includes a sliding contact portion elastically contacted with the guide rail to thereby receive an upward-going force from the guide rail.Type: GrantFiled: April 15, 2003Date of Patent: June 7, 2005Assignee: NSK Ltd.Inventor: Jun Matsumoto
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Patent number: 6877900Abstract: 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: September 20, 2002Date of Patent: April 12, 2005Assignee: THK Co., Ltd.Inventors: Hiroaki Mochizuki, Tetsuhiro Nishide
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Patent number: 6857780Abstract: A rodless slide assembly is provided having first and second longitudinally extending chambers. A piston assembly is disposed in the first longitudinally extending chamber and is movable relative thereto. A slide assembly is disposed in the second longitudinally extending chamber and also movable relative thereto.Type: GrantFiled: November 12, 2003Date of Patent: February 22, 2005Assignee: PHD, Inc.Inventors: Glen A. Morr, Larry E. Keeling, Jr., Scott A. Shepherd
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Patent number: 6851857Abstract: A linear motion guide unit makes it possible to mount precisely a track rail to a machine bed and also reduce sliding resistance that might be encountered when a slider moves over the track rail. On a sidewise outside surface of a side wall of the track rail there is made a bulged portion that spreads in width H from a lower surface of the side wall up to a level above the center of gravity G of the track rail. The bulged portion has a sidewise outermost surface that is processed to provide a surface of reference, which can match a mating surface of reference made on the fixed bed. The slider has an upper seal to close a clearance left between a fore-and-aft side of the slider and a lengthwise inside surface of any one of the side walls of the track rail, while a recess is cut in the inside surface of the side wall in a way extending lengthwise of the track rail so as to allow the upper seal to come in sliding contact at a lip thereof with the recess.Type: GrantFiled: February 7, 2003Date of Patent: February 8, 2005Assignee: Nippon Thompson Co., Ltd.Inventor: Yoshiharu Miyata
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Patent number: 6832680Abstract: In a work conveying system including at least a work holder for holding a work and a horizontal mover for moving the work holder horizontally in an upper ceiling space within a clean room, the work being conveyed to each of plural processing apparatuses. The horizontal mover has at least one linear moving mechanism including a duct with an internal guide, a traveling body engaging the guide and traveling through the traveling path defined by the duct, and a slider connected to the traveling body for travel with the traveling body on the exterior of the traveling path. The work holder is attached to the slider. Air cleaners are disposed at suitable intervals in the traveling path to clean the air therein and to discharge the cleaned air to the exterior. The traveling path accommodates a drive source, a drive mechanism, and a power supply.Type: GrantFiled: October 2, 2003Date of Patent: December 21, 2004Assignee: Hirata CorporationInventor: Kazuyuki Matsumura
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Publication number: 20040228551Abstract: In a linear guide apparatus including an axially extending guide rail, a slider engaged with the guide rail, and a plurality of rolling elements loaded into the slider, the linear guide apparatus further includes a sealing device fixed to the slider in slidable contact with the guide rail for sealing a clearance existing between the guide rail and the slider, in which the sealing device includes: a lubricant-containing polymer member formed of a synthetic resin containing a lubricant, and having a contact portion contacting with the guide rail to surround the guide rail, both wing portions, a connecting portion connecting the wing portions to be C-shaped substantially, and a pair of first recesses formed in the respective wing portions for fixing the lubricant-containing polymer member to the slider; a first plate member fitted to the lubricant-containing polymer member opposed to the slider; and a pair of first cylindrical members inserted to the respective first recesses.Type: ApplicationFiled: November 14, 2003Publication date: November 18, 2004Applicant: NSK LTD.Inventors: Toru Tsukada, Yutaka Igarashi, Soichiro Kato, Toshikazu Yabe, Fumio Ueki
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Patent number: 6817765Abstract: A protection hood mechanism for linear sliding rails is disclosed. The hood mechanism has a sliding seat and a saddle seat, and the sliding rails is provided at the two lateral sides at the top of the sliding seat, characterized in that the bottom face of the saddle seat, corresponding to the sliding rail, is formed into an engaging slot, and the bottom face of the saddle seat, corresponding to the engaging slot, is provided with a resisting block, and the center of each resisting block extended along the engaging slot is formed into a protruded section, such that a partitioned space is formed between the engaging slot and the resisting block, and the space allows the sliding rail protection hood to be inserted, and the two ends of the protection hood are locked to the sliding rail seat, thereby a protection hood for the linear sliding rail is obtained.Type: GrantFiled: December 4, 2002Date of Patent: November 16, 2004Inventor: I Tsung Liao
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Patent number: 6766895Abstract: In a work conveying system including at least a work holder for holding a work and a horizontal mover for moving the work holder horizontally in an upper ceiling space within a clean room, the work being conveyed to each of plural processing apparatuses. The horizontal mover has at least one linear moving mechanism including a duct with an internal guide, a traveling body engaging the guide and traveling through the traveling path defined by the duct, and a slider connected to the traveling body for travel with the traveling body on the exterior of the traveling path. The work holder is attached to the slider. Air cleaners are disposed at suitable intervals in the traveling path to clean the air therein and to discharge the cleaned air to the exterior. The traveling path accommodates a drive source, a drive mechanism, and a power supply.Type: GrantFiled: August 29, 2002Date of Patent: July 27, 2004Assignee: Hirata CorporationInventor: Kazuyuki Matsumura
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Patent number: 6749338Abstract: A cover band on a linear guide for closing holes that are provided for fastening screws of a guide rail. The cover band is inserted in a longitudinal groove of the guide rail and has an outer surface in the plane of a wiping surface of the guide rail. Two retaining strips on the cover band bear inside the longitudinal groove against those lateral groove walls and are locked together. The cover band is composed of an outer facing layer and an inner deformation layer. The inner layer contains the retaining strips. The outer and inner layers of the cover band are of two different materials, e.g., steel and aluminum, which are inseparably connected mechanically by cold roll bonding.Type: GrantFiled: October 24, 2002Date of Patent: June 15, 2004Assignee: Ina-Schaeffler KGInventor: Roland Schmidt
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Patent number: 6742729Abstract: An air jet type linear guide way contains an air chamber in the sliding block for injecting pressurized air therefrom along the track way so as to forcibly blow junks such as wastes, powder dust, or oil scales away before passing of the slide block assembly therefore no fear of infringement of contaminative foreign materials into the main structure of the linear guide way assembly that causes severe injury to its performance. The device of this invention will be well-suited for using in high contaminated working environments such as carpentry, stone cutting, or textiles and dyeing engineering where powder dusts are usually pervading in the air.Type: GrantFiled: September 6, 2002Date of Patent: June 1, 2004Assignee: Hiwin Technologies Corp.Inventor: Ming-Yuan Lin
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Patent number: 6715920Abstract: A linear rolling bearing element for mounting on a running surface of a guide rail, said element having a carrier body that comprises, for a rolling element circuit, a load-bearing zone and a return channel that are parallel to a direction of movement of the carrier body while being connected to each other by two deflecting channels disposed in head pieces that are arranged on ends of the carrier body. The head pieces comprise lubricant ducts, and a rolling element guiding means in the form of a plastic coating is arranged in the load-bearing zone, the return channel and the deflecting channels. Each head-piece is formed by a cage arranged on an end of the carrier body and by a one-piece sealing plate comprising lubricant ducts, said plate being adapted to and disposed on the cage.Type: GrantFiled: May 30, 2002Date of Patent: April 6, 2004Assignee: INA Schaeffler KGInventors: Martin Menges, Thomas Elicker, Ralf Franz
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Patent number: 6698931Abstract: The present invention relates to a dynamic pressure-type liquid bearing unit which can prevent lubricating oil from flowing outside by discharging air that is trapped in the bearing. A sleeve and a thrust plate that is attached to one end side of the sleeve sandwich a thrust bearing leaving a gap around the thrust bearing. Unsymmetrical herringbone-shaped dynamic pressure-generating grooves are formed on at least one of the outer circumferential surface of the stationary shaft and the inner circumferential surface of the sleeve. A first capillary sealing portion is formed between one end of the stationary shaft and the sleeve, and a second capillary sealing portion is formed between the other end of the stationary shaft and the thrust plate. Groove portions for removing air are formed between the first capillary sealing portion and the second capillary sealing portion.Type: GrantFiled: October 24, 2001Date of Patent: March 2, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventor: Toshifumi Hino
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Patent number: 6672764Abstract: In a linear guide apparatus including an axially extending guide rail, a slider engaged with the guide rail, and a plurality of rolling elements loaded into the slider, the linear guide apparatus further includes a sealing device fixed to the slider in slidable contact with the guide rail for sealing a clearance existing between the guide rail and the slider, in which the sealing device includes a lubricant-containing polymer member formed of a synthetic resin containing a lubricant, and having a contact portion contacting with the guide rail to surround the guide rail, both wing portions, a connecting portion connecting the wing portions to be C-shaped substantially, and a pair of first recesses formed in the respective wing portions for fixing the lubricant-containing polymer member to the slider; a first plate member fitted to the lubricant-containing polymer member opposed to the slider; and a pair of first cylindrical members inserted to the respective first recesses.Type: GrantFiled: October 4, 2002Date of Patent: January 6, 2004Assignee: NSK Ltd.Inventors: Toru Tsukada, Yutaka Igarashi, Soichiro Kato, Toshikazu Yabe, Fumio Ueki
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Publication number: 20030215166Abstract: A linear guide bearing apparatus has a guide rail including a first raceway groove; a movable element including a second raceway groove and a rolling element return groove connected continuously with the second raceway groove through curved grooves respectively formed in the two end portions of the second raceway groove, the movable element being movably fitted with the guide rail; a plurality of rolling elements loaded in a circulation passage including the first raceway groove, the second raceway groove, the curved grooves, and the rolling element return groove for moving the movable element along the guide rail; and, an under-seal disposed in the movable element for sealing a space between the guide rail and the movable element, wherein the under-seal includes a sliding contact portion elastically contacted with the guide rail to thereby receive an upward-going force from the guide rail.Type: ApplicationFiled: April 15, 2003Publication date: November 20, 2003Applicant: NSK LTD.Inventor: Jun Matsumoto
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Patent number: 6629779Abstract: A linear displacement guide, comprising a guide rail and slide that is supported via roller elements on the guide rail. The guide rail contains a groove extending essentially in longitudinal direction and through openings that can be covered for fastening the guide rail, wherein at least one of the through openings is located in the groove region. The linear displacement guide is provided with a covering means to be arranged on and secured to the guide rail to permit a simple and tolerance-insensitive assembly. The invention suggests securing the covering means, designed as cover band (4), on the guide rail. The cover band should comprise a center section (20) and two adjoining clamping legs (21), which are angled relative to the center section (20), wherein the cover band (4) can be fastened to the guide rail (1) by fitting the two clamping legs against the side walls (15) of groove (14).Type: GrantFiled: June 27, 2001Date of Patent: October 7, 2003Assignee: Schneeberger Holding AGInventors: Ernst Mischler, Heinz Rotzetter
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Patent number: 6626571Abstract: In sealing means for a slider unit in which sealing members of foam rubber are arranged to close sidewise clearances left open between a dustproof cover and side walls of a track rail, the improved sealing means is directed to making sure of effective sealing performance, prolonging a durable service life of the sealing member, and also making mounting of the sealing member to the clearances easier. Sealing members of flexible foam rubber rich in restoring force are arranged in the clearance between the dustproof cover and the side walls of the track rail. The sealing members, while fastened to the dustproof cover, are allowed to experience any deformation of expansion/collapse when sideward wings of the slider moves back and forward between the confronting sealing members and the side walls, with keeping close sliding engagement with the associated surfaces of the wings.Type: GrantFiled: October 25, 2001Date of Patent: September 30, 2003Assignee: Nippon Thompson Co., Ltd.Inventors: Masataka Kato, Ikuhisa Miwa
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Publication number: 20030161557Abstract: A linear motion guide unit has a track rail of a pair of side walls on which raceway grooves are formed. In the depths or bottom of the raceway grooves there are cut deeply relief flutes, one to each raceway groove, where retainer bands to keep rolling elements against coming apart are allowed to step aside therein. The raceway groove is made in so specific form as to make it possible to produce the raceway groove and do the relief flute at the same time. The retainer band is installed in the slider, with stepping aside in the relief flute for linear movement relative to the track rail as the slider travels along the track rail. The relief flute is cut in a fashion at least one lengthwise flank thereof on the side nearer the upward opening between the side walls of the track rail is made slantwise to provide a tapered flank because of which the relief flute can be produced together with the associated raceway groove at a single process.Type: ApplicationFiled: February 26, 2003Publication date: August 28, 2003Applicant: Nippon Thompson Co., Ltd.Inventors: Toyohisa Ishihara, Yoshiharu Miyata
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Publication number: 20030161555Abstract: A protection hood mechanism for linear sliding rails is disclosed. The hood mechanism has a sliding seat and a saddle seat, and the sliding rails is provided at the two lateral sides at the top of the sliding seat, characterized in that the bottom face of the saddle seat, corresponding to the sliding rail, is formed into an engaging slot, and the bottom face of the saddle seat, corresponding to the engaging slot, is provided with a resisting block, and the center of each resisting block extended along the engaging slot is formed into a protruded section, such that a partitioned space is formed between the engaging slot and the resisting block, and the space allows the sliding rail protection hood to be inserted, and the two ends of the protection hood are locked to the sliding rail seat, thereby a protection hood for the linear sliding rail is obtained.Type: ApplicationFiled: December 4, 2002Publication date: August 28, 2003Inventor: I Tsung Liao
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Patent number: 6592261Abstract: A motion guide device generally includes a track member having a horizontal surface and two side surfaces continuous to the horizontal surface, a movable member mounted to the track member to be relatively movable with respect to the track member to be relatively movable with respect to the track member along a longitudinal direction thereof, and a cover member covering the horizontal surface of the track member along an entire width direction thereof. The track member is formed with undercut portions formed to side edge portions of the side surfaces of the track member on the horizontal surface sides, and the undercut portions are recessed towards a central side of the track member in the width direction thereof. The cover member includes a central flat portion and engaging portions formed at both end portions in the width direction thereof to be engaged with the undercut portions, respectively, so as to clamp the track member therebetween in the width direction.Type: GrantFiled: February 14, 2001Date of Patent: July 15, 2003Assignee: THK Co., Ltd.Inventor: Hiroaki Mochizuki
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Patent number: 6588289Abstract: A contamination resistant lead screw or ball screw-driven linear actuator has the lead screw and drive nut enclosed within a specially constructed guide chassis. A carriage is slidably mounted on parallel rails attached to the guide chassis. The carriage is attached to the drive nut through a slot in the guide chassis. An enclosure surrounds the guide chassis. The enclosure and the guide chassis create a labyrinth seal that effectively contains internally generated debris and contamination and excludes environmental dirt, debris and contamination.Type: GrantFiled: July 6, 2001Date of Patent: July 8, 2003Assignee: Danaher Motion Technology, LLCInventors: Tom Thang Ung, Robert Alexander Lipsett
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Patent number: 6572269Abstract: A linear guide apparatus includes a slider, a guide rail opposing the slider with a clearance provided therebetween, a plurality of rolling elements which are rotatably interposed there between, and a contact seal device for sealing an opening of the clearance. A side seal member of the contact seal device is made of a rubber material composition containing fluoro rubber. The rubber basically comprises at least one of copolymers that are vinylidenefluoride-tetrafluoroethylene-polypropylene terpolymer and tetrafluoroethylene-polypropylene copolymer.Type: GrantFiled: November 30, 2001Date of Patent: June 3, 2003Assignee: NSK Ltd.Inventors: Toshikazu Yabe, Takahiko Uchiyama, Keisuke Yokoyama, Nariaki Aihara
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Publication number: 20030081866Abstract: A cover band on a linear guide for closing holes that are provided for fastening screws of a guide rail. The cover band is inserted in a longitudinal groove of the guide rail and has an outer surface in the plane of a wiping surface of the guide rail. Two retaining strips on the cover band bear inside the longitudinal groove against those lateral groove walls and are locked together. The cover band is composed of an outer facing layer and an inner deformation layer. The inner layer contains the retaining strips. The outer and inner layers of the cover band are of two different materials, e.g., steel and aluminum, which are inseparably connected mechanically by cold roll bonding.Type: ApplicationFiled: October 24, 2002Publication date: May 1, 2003Applicant: INA-Schaeffler KGInventor: Roland Schmidt
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Patent number: 6550968Abstract: In a linear guide apparatus including an axially extending guide rail, a slider engaged with the guide rail, and a plurality of rolling elements loaded into the slider, the linear guide apparatus further includes a sealing device fixed to the slider in slidable contact with the guide rail for sealing a clearance existing between the guide rail and the slider, in which the sealing device includes a lubricant-containing polymer member formed of a synthetic resin containing a lubricant, and having a contact portion contacting with the guide rail to surround the guide rail, both wing portions, a connecting portion connecting the wing portions to be C-shaped substantially, and a pair of first recesses formed in the respective wing portions for fixing the lubricant-containing polymer member to the slider; a first plate member fitted to the lubricant-containing polymer member opposed to the slider; and a pair of first cylindrical members inserted to the respective first recesses.Type: GrantFiled: June 7, 2001Date of Patent: April 22, 2003Assignee: NSK Ltd.Inventors: Toru Tsukada, Yutaka Igarashi, Soichiro Kato, Toshikazu Yabe, Fumio Ueki
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Patent number: 6547437Abstract: In a curvilinear motion guide unit in which sliders are allowed to move along a track rail extending curved with a preselected curvature, this unit makes the slider reduced in size with well balance. An end cap may be made common in specification to a variety of sliders, which are modified in specification depending on diverse variations in curvature of track rail. To this end, a casing for the slider has forward and aft end faces that are arranged, regardless of the variations in length of the casing, such that imaginary planes including the end faces and normal to a top surface of the track rail coincide with radial planes extending through the center of curvature of the track rail. The return passages are opened on the forward and aft end faces at locations that are closer to the centroidal axis of the track rail than the loaded raceways. Moreover, the return passages are linear bores that run straight through the casing.Type: GrantFiled: February 20, 2001Date of Patent: April 15, 2003Assignee: Nippon Thompson Co., Ltd.Inventors: Akihiko Kamimura, Norimasa Agari, Toyohisa Ishihara
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Publication number: 20030059134Abstract: 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: ApplicationFiled: September 20, 2002Publication date: March 27, 2003Applicant: THK CO., LTD.Inventors: Hiroaki Mochizuki, Tetsuhiro Nishide
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Patent number: 6533349Abstract: An open roof construction for a vehicle having an opening in its fixed roof comprises a stationary part with at least one guide rail, which is to be secured to the roof. An adjustable closure panel is supported by a mechanism which is capable of sliding movement in the guide rail. The closure panel can be adjusted between a closed position, in which it closes the roof opening, and an open position, in which it at least partially releases the roof opening. The guide rail is provided with an adjustable cover, which can be adjusted synchronously with the movements of the mechanism, or can be made deformable locally.Type: GrantFiled: January 19, 2001Date of Patent: March 18, 2003Assignee: Inalfa Industries B.V.Inventor: Martinus Wilhelmus Maria Nabuurs
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Publication number: 20030039413Abstract: In a linear guide apparatus including an axially extending guide rail, a slider engaged with the guide-rail, and a plurality of rolling elements loaded into the slider, the linear guide apparatus further includes a sealing device fixed to the slider in slidable contact with the guide rail for sealing a clearance existing between the guide rail and the slider, in which the sealing device includes a lubricant-containing polymer member formed of a synthetic resin containing a lubricant, and having a contact portion contacting with the guide rail to surround the guide rail, both wing portions, a connecting portion connecting the wing portions to be C-shaped substantially, and a pair of first recesses formed in the respective wing portions for fixing the lubricant-containing polymer member to the slider; a first plate member fitted to the lubricant-containing polymer member opposed to the slider; and a pair of first cylindrical members inserted to the respective first recesses.Type: ApplicationFiled: October 4, 2002Publication date: February 27, 2003Applicant: NSK LTD.Inventors: Toru Tsukada, Yutaka Igarashi, Soichiro Kato, Toshikazu Yabe, Fumio Ueki
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Patent number: 6513976Abstract: In a linear guide arrangement (10a) with an elongated guide rail (12a) and a guide carriage (14a) that can travel thereon in the lengthwise direction (L) of the guide rail (12a), a surface of the guide rail (12a) facing the guide carriage (14a) is covered by a cover band (24a). A band securing element (32a) is placed in the vicinity of each of the two longitudinal ends (30a) of the guide rail (12a). The two band securing elements (32a) jointly secure the cover band (24a) at least with respect to its displacement in lengthwise direction (L) of the guide rail (12a), wherein each of the band securing elements (32a) at least impedes movement of the cover band (24a) relative to the guide rail (12a) directed towards the other band securing element (32a). At least one of the band securing elements (32a) can be non-positively engaged with the cover band (24a) as well as with the guide rail (12a).Type: GrantFiled: October 4, 2001Date of Patent: February 4, 2003Assignee: Rexroth Star GmbHInventors: Harald Maiss, Richard Weidner, Günter Blaurock, Herbert Kirchner, Holger Schmitt, German Dütsch, Alfred Haub
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Patent number: 6502988Abstract: In the inventive arrangement of a cover strip (27) on a linear guide, the cover strip (27) is supported through its flat inner surface (32) on a flat support surface (28) of a guide rail (26), which flat support surface delimits a longitudinal groove (25) of the guide rail (26) in inward direction. Two recesses (31) made in the inner surface (32) of the cover strip (27) in the regions of the long sides of the cover strip (27), extend in longitudinal direction and lead to the formation of resilient retaining ledges (33) which serve to fix the cover strip (27) on the guide rail (26).Type: GrantFiled: July 30, 2001Date of Patent: January 7, 2003Assignee: Ina Walzlager Schaeffler oHGInventors: Richard Koch, Johann Kremer
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Publication number: 20020154838Abstract: A linear guide apparatus includes a slider, a guide rail opposing the slider with a clearance provided therebetween, a plurality of rolling elements which are rotatably interposed there between, and a contact seal device for sealing an opening of the clearance. A side seal member of the contact seal device is made of a rubber material composition containing fluoro rubber. The rubber basically comprises at least one of copolymers that are vinylidenefluoride-tetrafluoroethylene-polypropylene terpolymer and tetrafluoroethylene-polypropylene copolymer.Type: ApplicationFiled: November 30, 2001Publication date: October 24, 2002Applicant: NSK LTD.Inventors: Toshikazu Yabe, Takahiko Uchiyama, Keisuke Yokoyama, Nariaki Aihara
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Patent number: 6467960Abstract: Apparatus associated with air bearings which are suitable for use in an environment with high vacuum levels. According to one aspect, an air bearing linear guide that is suitable for use in a vacuum environment is arranged to substantially wrap around a portion of a guide beam without covering the ends of the guide beam. The air bearing linear guide includes a sleeve that has an inner surface, and a first air pad that is located on the inner surface of the sleeve. A first land is arranged on the inner surface of the sleeve at least partially around the first air pad, e.g., such that the land is substantially offset from the perimeter of the air pad. The first land and the air pad define a first channel therebetween.Type: GrantFiled: August 18, 2000Date of Patent: October 22, 2002Assignee: Nikon CorporationInventors: Douglas C. Watson, W. Thomas Novak
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Patent number: 6443618Abstract: A particulate free air bearing and seal is formed between a slide and an air bearing body. Pressurized gas is supplied to an air bearing region between the slide and the air bearing body. The pressurized gas causes the slide to float on the air bearing body thus avoiding particulate generation due to friction between the slide and the air bearing body. Vacuum is simultaneously supplied to a collector. The collector captures the pressurized gas and any particulates entrained within the pressurized gas preventing the particulates from entering and contaminating a clean area.Type: GrantFiled: July 24, 2000Date of Patent: September 3, 2002Assignee: Moore Epitaxial, Inc.Inventors: Katsuhito Nishikawa, Thomas F. Carlos
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Patent number: 6443619Abstract: For protecting a guide rail (10) between two guide carriages with fixed spacing (A) running on the guide rail (10), a covering means (20) which adjoins each of the guide carriages (12) and has a rigid configuration in the axial direction (X) over a substantial part of its length is provided between the two guide carriages (12).Type: GrantFiled: December 21, 1999Date of Patent: September 3, 2002Assignee: Rexroth Star GmbHInventor: German Dütsch