Lubrication Patents (Class 74/89.44)
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Patent number: 11560939Abstract: An actuator includes a housing, an extension arm, and a threaded spindle. The threaded spindle is mounted on the housing in such a way as to be rotatable with respect to an axis of rotation by a first rotary bearing. The extension arm projects out of the housing in such a way that it can be moved in a direction of the axis of rotation. The housing and the extension arm together delimit an internal space, the volume of which changes when the extension arm moves. A first end of the threaded spindle that is remote from the first rotary bearing, projects into a tubular section of the extension arm, irrespective of a position in which the extension arm is situated. The tubular section extends with a constant internal cross-sectional shape along the axis of rotation.Type: GrantFiled: October 6, 2021Date of Patent: January 24, 2023Assignee: Robert Bosch GmbHInventors: Bernhard Keller, Markus Rumpel, Steffen Pfister
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Patent number: 11543021Abstract: A screw actuator comprises a nut having an internal helical formation and a screw having an external helical formation and rotatably received within the nut, relative rotational movement of the nut and screw causing axial movement of one of the nut and screw relative to the other of the nut and screw. The actuator further comprises a lubricant reservoir and a lubricant pressuriser for pressurising lubricant within the lubricant reservoir. A lubricant receiving chamber is formed in the nut. The screw extends through the lubricant receiving chamber. A lubricant supply passage fluidly connects the lubricant reservoir and the lubricant receiving chamber. A valve controls the flow of lubricant between the lubricant reservoir and the lubricant receiving chamber. A lubricant supply piston is received in the lubricant receiving chamber and is mounted on the external helical formation of the screw.Type: GrantFiled: September 28, 2020Date of Patent: January 3, 2023Assignee: RATIER-FIGEAC SASInventor: Frédéric Vermande
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Patent number: 11105604Abstract: An apparatus of measuring axial clearance of a ball screw device is capable of measuring axial clearance with high accuracy by easily attaching a ball screw device to be measured without requiring special attention. This apparatus includes a support unit that supports a nut as one member of the nut and a screw shaft threadedly engaged with each other, a measuring unit that measures a displacement amount of the screw shaft as the other member in an axial direction, a load applying unit that applies a load to the screw shaft in directions opposite to each other along the axial direction, and a posture correction unit that is provided between the screw shaft and the load applying unit to hold the nut and the screw shaft to be relatively displaceable.Type: GrantFiled: July 18, 2018Date of Patent: August 31, 2021Assignee: NSK LTD.Inventor: Kouhei Dobashi
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Patent number: 10913484Abstract: An electromechanical power steering device may include a servomotor that drives an axially movable component via a ball nut mounted in a bearing such that the ball nut can be rotated about a longitudinal axis in a housing. The ball nut may be engaged with a threaded spindle configured on the axially movable component. The ball nut may include a ball screw on its inner side for balls to roll on, and an external ball return means that connects a start of the ball screw to an end of the ball screw to make endless circulation of the balls possible. A return channel of the ball return means may be formed by way of a deflecting body and a pulley wheel.Type: GrantFiled: June 22, 2017Date of Patent: February 9, 2021Assignees: THYSSENKRUPP PRESTA AG, THYSSENKRUPP AGInventors: András Illés, Wolfram Raither
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Patent number: 10704667Abstract: A gear box assembly includes an outer housing and a gear box shaft at least partially disposed in the outer housing. The gear box shaft includes an interior region, a reservoir dam that separates the interior region into a reservoir volume and a spline volume and one or more gear box shaft venting holes formed through the gear box shaft near an end thereof. The assembly also includes a regulator disposed at least partially within the gear box shaft, the regulator including one or more regulator vent holes, wherein at least one of the regulator venting holes is in fluid communication with one of the one or more gear box shaft vent holes.Type: GrantFiled: January 29, 2019Date of Patent: July 7, 2020Assignee: HAMILTON SUNSTRAND CORPORATIONInventors: Matthew Allen Slayter, Jeffrey Todd Roberts
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Patent number: 10004930Abstract: A tool for inserting a flame arrestor assembly into a process control device having a first passageway of a first depth and a second passageway of a second depth different from the first depth. The tool includes a head portion having a first diameter, and a tip portion having a second diameter less than the first diameter. The tip portion has a first portion, a second portion, and a third portion, the first and second portions being separated by a first notch, and the second and third portions being separated by a second notch. The first notch is arranged to indicate when the flame arrestor assembly is fully inserted into the first passageway, and the second notch is arranged to indicate when the flame arrestor assembly is fully inserted into the second passageway.Type: GrantFiled: June 27, 2016Date of Patent: June 26, 2018Assignee: TESCOM CORPORATIONInventors: Eric J. Burgett, Jacob T. R. Renollett
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Patent number: 9500224Abstract: A linear motion screw assembly is provided herein which comprises (a) at least a first end support, (b) a screw shaft rotatably mounted to the first end support and defining a longitudinal direction, (c) a linear guide means mounted to the first end support and oriented parallel to the screw shaft, (d) a follower assembly mounted to the screw shaft and, associated therewith, an anti-rotation means in translatable contact with the guide means and movable in a longitudinal direction along the guide means, and (e) a cartridge non-rotatably mounted within said follower assembly, said cartridge including a guide nut having an axial bore through which the screw shaft is rotatably disposed.Type: GrantFiled: April 12, 2012Date of Patent: November 22, 2016Assignee: Thomson Industries Inc.Inventors: Matthew Asher, Robert A. Lipsett, Jeffrey G. Johnson
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Patent number: 9400047Abstract: A cartridge assembly for use in conjunction with a linear motion guided screw assembly includes (a) a cylindrical housing having an axial bore, at least a portion of the bore being defined by a threaded surface configured to engage a screw shaft; (b) at least one bearing disposed in the axial bore of the housing; (c) at least one retainer ring disposed in the axial bore of the housing; and, (d) a cylindrical lubricant block disposed in the axial bore of the housing, the lubricant block being fabricated from a microporous polymer which is impregnated with a lubricant oil.Type: GrantFiled: January 18, 2013Date of Patent: July 26, 2016Assignee: Balls Screws and Actuators Co.Inventors: Jeffrey G. Johnson, Robert A. Lipsett, Matthew Asher
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Patent number: 9157520Abstract: A motion guide apparatus includes a cylindrical member having a peripheral protrusion formed between two outer peripheral recesses, a housing engaged onto the cylindrical member and having a peripheral swelling formed between two peripheral depressions, a number of bearing members engaged between the cylindrical member and the housing, and two actuating ring members each having a number of orifices for engaging with the bearing members and each having an inner side portion directed toward the peripheral protrusion and the peripheral swelling, and each having an operating device extended into the gap that is formed between the peripheral protrusion and the peripheral swelling for wiping the lubricating oil.Type: GrantFiled: March 15, 2013Date of Patent: October 13, 2015Assignee: Hiwin Technologies Corp.Inventors: Che Kang Chang, Zong Sian Jiang, Zong Sian Tsai
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Patent number: 8931358Abstract: A ball screw with a dust-proof and lubricating device comprises: a screw, a nut, a plurality of balls, an oil-absorbing member, a return unit, and two dust-proof members. The nut includes an axial oil-guiding hole, a plurality of radial oil holes in communication with the oil-guiding hole and the helical groove of the nut, and an oil-feeding hole in communication with one of the radial oil holes. The oil-absorbing member is disposed in the oil-guiding hole and the radial oil holes. The return unit is disposed in the nut to enable the turning and circulation of the balls. The two dust-proof members are located at both ends of the axial hole. The ball screw can still be lubricated when it is disposed in a vertical position, and the dust-proof and lubricating device which won't add axial length to the nut.Type: GrantFiled: July 13, 2012Date of Patent: January 13, 2015Assignee: Hiwin Technologies Corp.Inventors: Che Kang Chang, Dian-Yu Jan
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Publication number: 20150007677Abstract: A mechanical actuator for translating rotational motion to linear motion. The actuator includes a motor, a screw assembly, a bearing assembly, and first and second lubrication systems. The screw assembly includes a housing, a threaded screw shaft disposed within the housing, a nut assembly, and an extension tube. The threaded screw shaft is rotatable by the motor. The nut assembly is arranged to move in either direction along a longitudinal axis of the threaded screw shaft when the threaded screw shaft is in rotational motion, thereby moving the extension tube between an extended position and a retracted position. The bearing assembly is arranged to provide support to at least a portion of a length of the threaded screw shaft. A pathway of the first lubrication system is remote and isolated from a pathway of the second lubrication system.Type: ApplicationFiled: April 2, 2014Publication date: January 8, 2015Applicant: Nook Industries, Inc.Inventors: William Vincent Jacob, Raymond A. Karmansky, Nathan Ryan Daniher
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Patent number: 8893570Abstract: A ball screw with an oil-storage unit, the oil-storage unit includes an oil tank and a connector. The connector has one end formed in the form of a convex or concave structure, and the connecting end of the oil tank is also in the form of a concave or convex structure for engaging with the connector, so as to achieve quick assembling of the connector onto the oil tank through the engagement of the convex and concave structures. Since the oil-storage unit can be quickly replaced after the oil is used up, which provides an automatic and continuous self-lubricating function to the ball screw, and consequently extending the service life of the ball screw.Type: GrantFiled: June 28, 2012Date of Patent: November 25, 2014Assignee: Hiwin Technologies Corp.Inventor: Yung-Tsai Chuo
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Publication number: 20140331799Abstract: The invention relates to a mechanical member wherein a first part in contact with a second part movable relative to the first part, at least one of the parts including a coating of solid lubricant at least at contact zones between the first part and the second part, the solid lubricant being suitable on its own for lubricating the mechanical member. According to the invention, the mechanical member includes retention and capillary distribution means for distributing a fluid between the parts in such a manner as to form a film between said parts, which film can be pierced temporarily at each contact zone.Type: ApplicationFiled: December 3, 2012Publication date: November 13, 2014Inventors: Julie Rafaitin, Etienne Merlet
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Publication number: 20140260734Abstract: A motion guide apparatus includes a cylindrical member having a peripheral protrusion formed between two outer peripheral recesses, a housing engaged onto the cylindrical member and having a peripheral swelling formed between two peripheral depressions, a number of bearing members engaged between the cylindrical member and the housing, and two actuating ring members each having a number of orifices for engaging with the bearing members and each having an inner side portion directed toward the peripheral protrusion and the peripheral swelling, and each having an operating device extended into the gap that is formed between the peripheral protrusion and the peripheral swelling for wiping the lubricating oil.Type: ApplicationFiled: March 15, 2013Publication date: September 18, 2014Applicant: HIWIN TECHNOLOGIES CORP.Inventors: Che Kang CHANG, Zong Sian JIANG, Zong Sian TSAI
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Publication number: 20140245848Abstract: An electric linear actuator has a housing, an electric motor, a speed reduction mechanism, and a ball screw mechanism. The ball screw mechanism has a nut and a screw shaft. The nut is rotationally supported by bearings on the housing but is axially immovable. The screw shaft is rotationally supported on the housing but is axially immovable. The housing has a first housing and a second housing abutting against one another. Bores contain the screw shaft in the housing. The speed reduction mechanism has an input gear, an intermediate gear, and an output gear, secured on the nut, mating with the intermediate gear. The intermediate gear is rotationally supported, via a bearing, on a shaft. The shaft is supported at its opposite ends on the first and second housings.Type: ApplicationFiled: May 9, 2014Publication date: September 4, 2014Inventor: Yoshinori IKEDA
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Patent number: 8794095Abstract: The invention relates to a rotolinear actuator that comprises: a central rod having an outer thread and surrounded by a ring with an inner thread, and threaded satellite rollers distributed between the central rod and the outer ring engaged with the threaded faces thereof. The actuator includes means for dispensing by capillarity a liquid lubricant at least one contact area of at least one satellite roller with the central rod and with the outer ring, wherein the lubricant is economically dispensed by capillarity in an amount that is just sufficient and precisely at the contact locations of the interacting members, from a tank that may be sufficient for the lifetime of the actuator.Type: GrantFiled: December 17, 2008Date of Patent: August 5, 2014Assignee: Sagem Defense SecuriteInventors: Etienne Merlet, Jean-François Weibel, Marie-Noëlle Raymonde Agathe Besold
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Patent number: 8746409Abstract: A linear transmission assembly having a lubricant recovery module is composed of a movable member having a chamber; a first oil wick inserted into the movable member and the chamber and having a first oil-absorbable portion and a first oil-dischargeable portion; an oil tank mounted to the movable member and having an oil room for storage of lubricating oil; a second oil wick mounted to the oil tank and having a second oil-absorbable portion and a second oil-dischargeable portion, the former of which extends into the oil room for contact with the lubricating oil and the latter of which reaches the chamber; and a third oil wick having a third oil-absorbable portion and a third oil-dischargeable portion, the former of which reaches the chamber and the latter of which does not contact the lubricating oil. Thus, the lubricating can be prevented from overspill and staining the linear transmission device.Type: GrantFiled: September 30, 2011Date of Patent: June 10, 2014Assignee: Hiwin Technologies Corp.Inventors: Tsung-Hsien Chiang, Fu-Chun Huang
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Publication number: 20140007719Abstract: An electromechanical linear drive having a housing and having at least one piston rod that passes through an end-located housing cover, projects at one end out of the housing, and is carried by a spindle nut arranged longitudinally displaceably in a housing interior space, the spindle nut sitting on a threaded spindle that extends through the housing interior space and can have a rotary motion imparted to it by means of an electric motor, and is displaceable back and forth in the housing interior space as a result of the rotary motion of the threaded spindle, is characterized in that a lubrication nipple (22) accessible on the outer side of the housing (11), and at least one lubrication passage (23, 24) joined to said nipple (22) and opening into a stop surface (21), located in the housing interior space (31), for the spindle nut (18), are arranged in a housing region (14) constituting an end stop for the motion of the spindle nut (18); and at least one lubrication conduit (25) leading to the lubrication siteType: ApplicationFiled: October 21, 2011Publication date: January 9, 2014Applicant: PARKER HANNIFIN CORPORATIONInventors: Andreas Geppert, Jochen Kullick
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Publication number: 20140000395Abstract: Spindle drive (1), in particular for a linear actuator, having a spindle (3), a spindle nut (7) which interacts with the spindle (3), and a lubricating channel outlet (20) which opens into an intermediate space between the spindle (3) and the spindle nut (7) for lubricating the spindle (3) and the spindle nut (7), the spindle drive (1) comprising, moreover, a stationary channel system and a rotatable channel system which is connected to the stationary channel system for feeding lubricant to the lubricating channel outlet (20).Type: ApplicationFiled: June 25, 2013Publication date: January 2, 2014Inventor: Michael Schwarzbach
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Publication number: 20130276563Abstract: The present invention provides a grease composition which contains a small amount (not more than 0.06 wt %) of molybdenum and yet is capable of achieving an excellent low friction property when mechanical parts in which the grease composition has been packed are operated under a severe sliding condition in which they are subjected to a high speed and a high contact pressure. The present invention also provides a bearing, a universal joint, and a linear motion device in which the grease composition of the present invention is packed. A grease composition (7) is packed inside a grease-packed bearing (1) in such a way that the grease composition (7) is applied to at least the circumference of each rolling element (4). The grease composition (7) contains base oil, a thickener, and an additive. The additive includes molybdenum dithiocarbamate and sodium dithiocarbamate. The content of the molybdenum for the whole weight of the grease composition (7) is set to not more than 0.06 wt %.Type: ApplicationFiled: December 16, 2011Publication date: October 24, 2013Applicant: NTN CORPORATIONInventors: Takayuki Kawamura, Mitsunari Asao
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Patent number: 8495924Abstract: In an electric actuator, a connector is coupled to one end of a screw shaft that makes up a displacement mechanism, the screw shaft being rotatably supported by first and second bearings. Further, on the other end of the screw shaft, a support ring is disposed through a holder, wherein the support ring is slidable along an inner circumferential surface of a piston rod. On the outer circumferential surface of a piston, a rotation-stopping member is provided, which includes projections thereon that project in a radial direction from the outer circumferential surface, the projections being inserted into grooves of said body.Type: GrantFiled: March 31, 2009Date of Patent: July 30, 2013Assignee: SMC Kabushiki KaishaInventors: Yoshihiro Fukano, Toru Sugiyama, Masaki Miyahara
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Publication number: 20130160586Abstract: A cartridge assembly for use in conjunction with a linear motion guided screw assembly includes (a) a cylindrical housing having an axial bore, at least a portion of said bore being defined by a threaded surface configured to engage a screw shaft; (b) at least one bearing disposed in the axial bore of the housing; (c) at least one retainer ring disposed in the axial bore of the housing; and, (d) a cylindrical lubricant block disposed in the axial bore of the housing, said lubricant block being fabricated from a microporous polymer which is impregnated with a lubricant oil.Type: ApplicationFiled: January 18, 2013Publication date: June 27, 2013Applicant: Ball Screws and Actuators Co.Inventor: Ball Screws and Actuators Co.
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Publication number: 20130081490Abstract: A linear transmission assembly having a lubricant recovery module is composed of a movable member having a chamber; a first oil wick inserted into the movable member and the chamber and having a first oil-absorbable portion and a first oil-dischargeable portion; an oil tank mounted to the movable member and having an oil room for storage of lubricating oil; a second oil wick mounted to the oil tank and having a second oil-absorbable portion and a second oil-dischargeable portion, the former of which extends into the oil room for contact with the lubricating oil and the latter of which reaches the chamber; and a third oil wick having a third oil-absorbable portion and a third oil-dischargeable portion, the former of which reaches the chamber and the latter of which does not contact the lubricating oil. Thus, the lubricating can be prevented from overspill and staining the linear transmission device.Type: ApplicationFiled: September 30, 2011Publication date: April 4, 2013Inventors: Tsung-Hsien Chiang, Fu-Chun Huang
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Patent number: 8387474Abstract: A motion guide device includes an elongated shaft having a groove formed on an outer peripheral surface, a movable member attached onto the shaft and having a bore for receiving the shaft, a housing attached to the movable member and having a space for receiving a lubricating oil, the housing includes a passage communicative with the bore and the space of the housing for allowing the lubricating oil to flow from the space into the groove of the shaft, and an oil applying member is rotatably engaged in the passage of the housing to carry and to apply or distribute the lubricating oil through the passage of the housing and then into the groove of the elongated shaft.Type: GrantFiled: May 21, 2009Date of Patent: March 5, 2013Assignee: Hiwin Technologies Corp.Inventors: Ming Yao Lin, Chia Min Liu, Chun Lin Yu, Yu Shan Lee
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Patent number: 8375815Abstract: A rolling-element screw device includes: a large number of rolling elements; a screw shaft having an outer periphery on which a rolling groove for the large number of rolling elements is helically formed; a nut member which has a through-hole through which the screw shaft is passed and which is threadedly engaged with the screw shaft through intermediation of the large number of rolling elements; a lubricant supply hole formed through the nut member from an outer peripheral surface of the nut member to an inner peripheral surface of the nut member; a lubricant tank mounted to the outer peripheral surface of the nut member and comprising an accommodating chamber for lubricant; and a lubricant applying body standing from the lubricant tank, and inserted into the lubricant supply hole along with amounting operation of the lubricant tank with respect to the nut member.Type: GrantFiled: April 9, 2010Date of Patent: February 19, 2013Assignee: THK Co., Ltd.Inventors: Soshi Miyahara, Hideo Saito, Toshiaki Kadono, Masahiko Yoshino, Takashi Sakuyama, Tsutomu Togashi, Kazuhiro Tani, Eri Kameda, Futoshi Nakamura
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Patent number: 8302499Abstract: A transmission system with a lubrication device is disclosed. The lubrication device is defined with an accommodation trough and an oil hole. In the accommodation trough is disposed a guiding assembly. The guiding assembly cooperates with the accommodation trough to define an oil storage space for accommodation of lubricating grease. The oil storage space is in communication with the oil hole. A power module is connected to the guiding assembly to drive the guiding assembly at regular intervals to make the lubricating grease overflow to the linear transmission system through the oil hole to perform the lubrication.Type: GrantFiled: December 17, 2009Date of Patent: November 6, 2012Assignee: Hiwin Technologies Corp.Inventors: Yan-Yu Chen, Zong-Sian Jiang, Chia-Min Liu
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Publication number: 20120266703Abstract: A ball screw with an oil-storage unit, the oil-storage unit includes an oil tank and a connector. The connector has one end formed in the form of a convex or concave structure, and the connecting end of the oil tank is also in the form of a concave or convex structure for engaging with the connector, so as to achieve quick assembling of the connector onto the oil tank through the engagement of the convex and concave structures. Since the oil-storage unit can be quickly replaced after the oil is used up, which provides an automatic and continuous self-lubricating function to the ball screw, and consequently extending the service life of the ball screw.Type: ApplicationFiled: June 28, 2012Publication date: October 25, 2012Inventor: Yung-Tsai CHUO
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Patent number: 8196484Abstract: An electrically powered linear actuator having a thrust assembly, a motor with a hollow rotor surrounding at least a portion of the thrust assembly, and a lubricant passage for replenishing lubricant to the force transmitting components of the actuator.Type: GrantFiled: April 16, 2009Date of Patent: June 12, 2012Assignee: Tol-O-Matic, Inc.Inventors: Brett C. Holker, Jeff Karls, Jeremy R. Forbord
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Patent number: 8162106Abstract: The invention provides a ball screw lubricative sealing device having a simplified lubrication mechanism. It is attachable to an installed standard ball screw nut, capable of retaining larger amount of lubricant and long supply of lubricant to the contacting screw parts, and further includes a sealing function. It includes: generally cylindrical case members having attachment part to be attached to both ends of a screw nut, respectively; plural thin seal plates made of lubricating oil impregnated felt-like fiber material which is a three-dimensionally crosslinked plastic fiber and resilient rubber members, and having a hole each and fitted inside said case member in such a state that they circumferentially overlap with each other, the hole having a shape corresponding to a lateral cross-sectional shape of a screw groove of ball screw shaft; and a plastic wiper fitted with a space from the thin seal plates inside each of the case member.Type: GrantFiled: July 30, 2010Date of Patent: April 24, 2012Assignee: Kuroda Precision Industries Ltd.Inventor: Hiroki Sakurai
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Publication number: 20120042741Abstract: A mechanical actuator for translating rotational motion to linear motion. The actuator includes a motor, a screw assembly, a bearing assembly, and first and second lubrication systems. The screw assembly includes a housing, a threaded screw shaft disposed within the housing, a nut assembly, and an extension tube. The threaded screw shaft is rotatable by the motor. The nut assembly is arranged to move in either direction along a longitudinal axis of the threaded screw shaft when the threaded screw shaft is in rotational motion, thereby moving the extension tube between an extended position and a retracted position. The bearing assembly is arranged to provide support to at least a portion of a length of the threaded screw shaft. A pathway of the first lubrication system is remote and isolated from a pathway of the second lubrication system.Type: ApplicationFiled: February 15, 2011Publication date: February 23, 2012Applicant: NOOK INDUSTRIES, INC.Inventors: William Vincent Jacob, Raymond A. Karmansky, Nathan Ryan Daniher
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Patent number: 8082814Abstract: A ball screw device includes a ball nut rotatably engaged onto a screw shaft for forming a gap between the ball nut and the screw shaft and for receiving a lubricating oil and for forming a helical raceway between the ball nut and the screw shaft, a number of bearing members engaged between the ball nut and the screw shaft and in the helical raceway, and a forcing device includes a barrel having an outer helical member for forming a helical channel and for receiving the lubricating oil, and for forcing the lubricating oil to flow into the gap between the ball nut and the screw shaft and to effectively lubricate the bearing members when the barrel is rotated relative to the screw shaft.Type: GrantFiled: June 17, 2008Date of Patent: December 27, 2011Assignee: Hiwin Technologies Corp.Inventors: Zong Sian Jiang, Xin He Chen, Wuteng Hsieh
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Patent number: 8056428Abstract: The present invention relates to a lubricating element (12) for rolling element tracks, in particular linear systems, with a body composed of a lubricant-storing material, which includes an application section (34) capable of being brought in contact with a rolling element bearing surface to supply lubricant, and which includes a storage region (22) for lubricant that abuts the application section (34), the body being provided with at least one recess (38) in the storage region (22), on an end opposite to the application section (34).Type: GrantFiled: July 15, 2008Date of Patent: November 15, 2011Assignee: Robert Bosch GmbHInventors: Gerald Vierheilig, Matthias Zeier, Juergen Mueller
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Patent number: 8051730Abstract: A lubrication apparatus is for a ball screw unit in which the grease state lubricant is used. There is formed a helical guide track in the lubrication apparatus. When the ball screw unit operates, a guide member rotates with the bolt, the grease stored in the guide track will flow ahead to the front terminal of the guide track and ooze out of the grease outlet to lubricate the bolt with the aid of a pressure produced due to the inertia of the flowing fluid, and the quantity of the oozed grease is determined by the size of the grease outlet. The lubrication of the ball screw unit can be performed automatically without relying on the external force.Type: GrantFiled: December 15, 2008Date of Patent: November 8, 2011Assignee: HIWIN Technologies Corp.Inventors: Zong-Sian Jiang, Edward Hsu
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Patent number: 8028595Abstract: An adjusting device for seating and reclining furniture includes a basis case, a screw rotatable axis, a guide area, an adjuster and a side cover. A notching is set at the upper end face of the guide area. A slider inside of the adjuster is combined with the upper wall of a perforating in the guide area by a connection portion. The width of the connection portion is set corresponding to the width of the notching of the guide area, and a perforated panel is set at the center of the connection portion to make a fender board impenetrate. The fender board may shield the notching of the guide area. A chamber is set in the upper end face of the adjuster corresponding to the position of the perforated panel from top to bottom. The chamber may hold a felt containing lubricating oil. There is a bearing chamber in the inner wall of the side cover. The bearing chamber may make the bearings embed in, and a bearing are pivoted and combined with the end of the screw rotatable axis.Type: GrantFiled: February 26, 2009Date of Patent: October 4, 2011Inventor: Kuo-An Wang
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Patent number: 8025128Abstract: The invention provides a ball screw lubricative sealing device having a simplified lubrication mechanism. It is attachable to an installed standard ball screw nut, capable of retaining larger amount of lubricant and long supply of lubricant to the contacting screw parts, and further includes a sealing function. It includes: generally cylindrical case members having attachment part to be attached to both ends of a screw nut, respectively; plural thin seal plates made of lubricating oil impregnated felt-like fiber material which is a three-dimensionally crosslinked plastic fiber and resilient rubber members, and having a hole each and fitted inside said case member in such a state that they circumferentially overlap with each other, the hole having a shape corresponding to a lateral cross-sectional shape of a screw groove of ball screw shaft; and a plastic wiper fitted with a space from the thin seal plates inside each of the case member.Type: GrantFiled: July 30, 2010Date of Patent: September 27, 2011Assignee: Kuroda Precision Industries Ltd.Inventor: Yoshimi Iwasaki
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Publication number: 20110185831Abstract: The interchangeable-core adjuster assembly for optical mounts comprises a carrier bushing and an internally-threaded core bushing that fits snuggly inside the carrier bushing. The carrier bushing is fixedly fitted into the hole the stage plate of the optical mount, and the core bushing slides inside it. The core bushing is irrotatably locked into position within the carrier bushing by conjugate key-keyway structures on carrier and core bushings. While the carrier bushing remains in the stage plate of the optical mount, the core bushing can be removed and replaced with another core bushing having a different pitch. In this way, the same mount may be used with either fine adjuster screw or ultra-fine adjuster screws by simply interchanging core bushings having the corresponding pitches.Type: ApplicationFiled: January 21, 2011Publication date: August 4, 2011Inventor: Eugeniusz Kozak
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Publication number: 20110146430Abstract: A transmission system with a lubrication device is disclosed. The lubrication device is defined with an accommodation trough and an oil hole. In the accommodation trough is disposed a guiding assembly. The guiding assembly cooperates with the accommodation trough to define an oil storage space for accommodation of lubricating grease. The oil storage space is in communication with the oil hole. A power module is connected to the guiding assembly to drive the guiding assembly at regular intervals to make the lubricating grease overflow to the linear transmission system through the oil hole to perform the lubrication.Type: ApplicationFiled: December 17, 2009Publication date: June 23, 2011Inventors: Yan-Yu Chen, Zong-Sian Jiang, Chia-Min Liu
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Publication number: 20110113905Abstract: A lubricating unit (20) for use with a threaded unit drive (10), composed of a spindle (12) extending in a longitudinal direction (11) and a nut (14) enclosing the spindle (12), includes a hollow-cylindrical housing (30) that has a base body (31) with an annular cavity (32) closed on the end face using a separate cover (36). A storage slab (70) composed of foam material is accommodated in the cavity (32) and is bent to form a ring. At least one oil-filling recess (79) extends through the storage slab (70). Fastening means (23) are provided on the longitudinal end face of the housing (30) opposite the cover (36) for fastening the housing (30) to the nut (14). The cover (36) is connected in an adhesive manner to the base body (31). At least one oil-filling opening (37) open toward the oil-filling recess (79) is provided in the housing (30).Type: ApplicationFiled: November 10, 2010Publication date: May 19, 2011Inventors: Paul Dietz, Andre Ziegler
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Patent number: 7934438Abstract: A ball screw device includes a screw shaft rotatably engaged with a ball nut, and a number of bearing members received between the ball nut and the screw shaft, and a circulating device for circulating the bearing members, the circulating device includes an elongate member having two end blocks for engaging into the ball nut and having a passage for receiving the bearing members, and includes a housing member and a casing member each having a portion of the passage of the elongate member for allowing the passage of the elongate member to be opened and exposed and for allowing the housing member and the casing member to be formed with molding procedures.Type: GrantFiled: October 31, 2007Date of Patent: May 3, 2011Assignee: Hiwin Technologies Corp.Inventors: Yan Yu Chen, Yueh Ling Chiu
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Patent number: 7870935Abstract: A traction drive power transmission device, where a lubrication oil can be stably and continuously applied for a long period to portions at which rollers and a shaft are in contact with each other, shortage of the lubrication oil does not occur at the contact portions, the lubrication oil is not wasted, and which does not impair work environment by contaminating floor surface etc. A traction drive power transmission device has at least one drive roller (12a), a follower roller (12b), and a circular cylinder-like shaft (11). The shaft (11) is held between the drive roller (12a) and the follower roller (12b). When the drive roller (12a) is rotated, rotational force by the rotation is transmitted to the shaft (11) to drive it in its axial direction. The device has a lubrication oil-delivering portion (20) with application bodies (22-1, 22-2) for applying a lubrication oil only to portions where the shaft (11) is in contact with the drive roller (12a) and the follower roller (12b).Type: GrantFiled: December 26, 2003Date of Patent: January 18, 2011Assignees: THK Co., Ltd., Mitutoyo CorporationInventors: Daisuke Yatsushiro, Takeki Shirai, Hidekazu Michioka, Takahiro Kawaguchi, Haruo Kusakabe, Mitsuru Fukuda, Seiichi Otsubo
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Patent number: 7857100Abstract: The invention provides a ball screw lubricative sealing device having a simplified lubrication mechanism. It is attachable to an installed standard ball screw nut, capable of retaining larger amount of lubricant and long supply of lubricant to the contacting screw parts, and further includes a sealing function. It includes: generally cylindrical case members having attachment part to be attached to both ends of a screw nut, respectively; plural thin seal plates made of lubricating oil impregnated felt-like fiber material which is a three-dimensionally crosslinked plastic fiber and resilient rubber members, and having a hole each and fitted inside said case member in such a state that they circumferentially overlap with each other, the hole having a shape corresponding to a lateral cross-sectional shape of a screw groove of ball screw shaft; and a plastic wiper fitted with a space from the thin seal plates inside each of the case member.Type: GrantFiled: October 20, 2005Date of Patent: December 28, 2010Assignee: Kuroda Precision Industries Ltd.Inventor: Hiroki Sakurai
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Publication number: 20100294056Abstract: A motion guide device includes an elongated shaft having a groove formed on an outer peripheral surface, a movable member attached onto the shaft and having a bore for receiving the shaft, a housing attached to the movable member and having a space for receiving a lubricating oil, the housing includes a passage communicative with the bore and the space of the housing for allowing the lubricating oil to flow from the space into the groove of the shaft, and an oil applying member is rotatably engaged in the passage of the housing to carry and to apply or distribute the lubricating oil through the passage of the housing and then into the groove of the elongated shaft.Type: ApplicationFiled: May 21, 2009Publication date: November 25, 2010Inventors: Ming Yao Lin, Chia Min Liu, Chun Lin Yu, Yu Shan Lee
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Patent number: 7788987Abstract: A self-lubricating ball screw comprises a nut, a screw shaft, at least one lubricating unit and at least one external oil tank. The lubricating unit is disposed in the nut, an end of the lubricating unit protrudes out of the nut and contacts the screw shaft, and another end of the lubricating unit is connected to the oil tank for absorbing the lubricating oil to the lubricating unit from the oil tank. An opening is formed in a side of the respective oil tanks, allowing for radial movement of the screw shaft. With the opening, the oil tank can be replaced at any time. The lubricating unit straddles the wipers and transmits lubricating oil to the protrusion without affecting the original arrangement of the wiper at either end of the nut, thus effectively saving the space of the oil tank, simplifying the structure and improving the maintenance efficiency.Type: GrantFiled: March 29, 2006Date of Patent: September 7, 2010Assignee: Hiwin Technologies Corp.Inventors: Yan-yu Chen, Chung-Hsueh Lin
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Publication number: 20100206104Abstract: A linear motion device has a first assembly and a second assembly which is linearly movable relative to the first assembly; a row of rolling elements that may circulate endlessly is located between the first and second assemblies, the first assembly including a rotatable threaded spindle that extends parallel to the longitudinal direction, and that is engaged in a screw-type manner with a threaded nut, the threaded nut being a component of the second assembly; the first assembly also includes an electric motor that is connected to the threaded spindle in a rotationally driving manner, and the rotational axis of which extends parallel to the threaded spindle; the first assembly includes a single-pieced, first body.Type: ApplicationFiled: January 25, 2010Publication date: August 19, 2010Inventors: Steffen Pfister, Bernhard Keller
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Patent number: 7748284Abstract: A lubricating element for rolling element tracks, particularly linear motion systems, has a body composed of a lubricant-storing material, which includes an application section capable of being brought in contact with a rolling element bearing surface to supply lubricant; the body has an elongated shape in a first storage region adjacent to the application section, and a lubricant flow through the first storage region triggered via the dispensing of lubricant at the application section is essentially oriented in the longitudinal direction of the first storage region.Type: GrantFiled: July 23, 2007Date of Patent: July 6, 2010Assignee: Robert Bosch GmbHInventors: Gerald Vierheilig, Rudolf Schlereth, Andre Ziegler, Michael Klein
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Publication number: 20100147092Abstract: A lubrication apparatus for the ball screw unit in which the grease state lubricant is used. There is formed a helical guide track in the lubrication apparatus. When the ball screw unit operates, a guide member rotates with the bolt, the grease stored in the guide track will flow ahead to the front terminal of the guide track and ooze out of the grease outlet to lubricate the bolt with the aid of a pressure produced due to the inertia of the flowing fluid, and the quantity of the oozed grease is determined by the size of the grease outlet. The lubrication of the ball screw unit can be performed automatically without relying on the external force.Type: ApplicationFiled: December 15, 2008Publication date: June 17, 2010Inventors: Zong-Sian JIANG, Edward Hsu
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Patent number: 7650806Abstract: A ring-like lubricant supply device 6 is fitted into a recess 4 of a nut member 2. The lubricant supply device 6 contains a lubricant and is formed in an outer peripheral surface with notches 7. Tubular members 8 each having an outer diameter larger than the diameter of the notch 7 are inserted into the notches, pushing and widening the notches 7 in a circumferential direction. One end of the tubular member 8 is fitted into a recess 9b of a retaining ring 9 and the retaining ring 9 is fixed to a nut member 2.Type: GrantFiled: January 26, 2004Date of Patent: January 26, 2010Assignee: NSK Ltd.Inventors: Toru Tsukada, Soichiro Kato
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Patent number: 7634952Abstract: The rotating nut ball screw unit with lubricating arrangement has a lubricating device composed of a main body, a collar and a bearing. The main body is provided with several oil holes and is attached to the end surface of the nut. The main body is relatively rotatable with respect to the collar intercalating the bearing therebetween. An oil storage forces the lubricant into an oil reserving space surrounded by the main body, the collar and the bearing. The oil reserving space is in communication with the oil holes and allows the lubricant to be forced into the main body and then to reach the surface of the screw bolt via oil holes. The forced lubrication arrangement of the present invention ensures a better lubricating effect.Type: GrantFiled: November 26, 2007Date of Patent: December 22, 2009Assignee: HIWIN Technologies Corp.Inventors: Xin-He Chen, Chieh-Hung Tsai, Wu-Teng Hsieh
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Publication number: 20090260464Abstract: An electrically powered linear actuator having a thrust assembly, a motor with a hollow rotor surrounding at least a portion of the thrust assembly, and a lubricant passage for replenishing lubricant to the force transmitting components of the actuator.Type: ApplicationFiled: April 16, 2009Publication date: October 22, 2009Inventors: Brett C. Holker, Jeff Karls, Jeremy R. Forbord
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Publication number: 20090255606Abstract: A land clearing device for use in conjunction with a hydraulic boom crane includes a body (2) which can be connected to the head of the hydraulic boom crane (1), a hydraulic motor (3,4), supported on the body, and a blade (5), operated by the hydraulic motor. In accordance with the invention, two elongated blade guides (6) are supported on the body (2), with two blade panels (7), reciprocating at the same pace and in opposite directions, supported between the blade guides, which blade panels are connected to the hydraulic motor (3,4) and both include knife-like blade rows (8), extending flush with each other in opposite directions.Type: ApplicationFiled: April 27, 2007Publication date: October 15, 2009Applicant: MENSE OYInventor: Seppo Ensio Mentula