Labyrinth Patents (Class 384/144)
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Patent number: 11668347Abstract: A rotation induction device for a vehicle includes: an upper case formed of a synthetic resin material, and having a piston rod passing therethrough; a lower case formed of a synthetic resin material and disposed under the upper case, wherein the piston rod passes through the lower case; a center plate formed of a synthetic resin material, disposed between the upper case and the lower case such that the piston rod passes through the center plate, and configured to induce the rotation of either one or both of the upper case and the lower case; and an inflow prevention part formed on either one or both of the upper case and the lower case, and configured to block an inflow of foreign matter through the piston rod.Type: GrantFiled: August 24, 2021Date of Patent: June 6, 2023Assignee: HYUNDAI MOBIS CO., LTD.Inventors: Jun Mo Kang, Byung Joon Choi
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Patent number: 11162421Abstract: The bearing chamber assembly can have a bearing chamber wall extending annularly and having a drain aperture, the drain aperture connecting a scavenge line, and a baffle, the baffle having an apertured sheet connected at one end to the bearing chamber wall, extending from the connected end over and past the scavenge port to a free edge, the free edge spaced from the bearing chamber wall.Type: GrantFiled: October 22, 2019Date of Patent: November 2, 2021Inventors: Jean-Sébastien Dick, Daniel Alecu, Kenneth Parkman
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Patent number: 10859204Abstract: This invention discloses a hoisting sheave shaft, a hoisting sheave and a lubricating device thereof, where the hoisting sheave shaft is provided with a first oil injection channel extending axially; an oil inlet of the first oil injection channel is arranged on an end surface of the hoisting sheave shaft; the hoisting sheave shaft is also radially provided with at least one second oil injection channel; the second oil injection channel intersects with the first oil injection channel; and an oil outlet of the second oil injection channel is arranged on an outer circular surface of the hoisting sheave shaft.Type: GrantFiled: April 30, 2020Date of Patent: December 8, 2020Assignee: TAIYUAN UNIVERSITY OF TECHNOLOGYInventors: Ziming Kou, Yongcun Guo, Juan Wu, Jianwei Yang, Fen Yang, Tengyu Li
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Patent number: 10508701Abstract: A vehicle suspension bushing assembly including an inner sleeve, a bearing, an intermediate sleeve, an outer sleeve, and a bushing. The inner sleeve extends longitudinally between first and second inner sleeve ends. The bearing extends annularly about the inner sleeve, the intermediate sleeve extends annularly about the bearing, and the outer sleeve extends annularly about the intermediate sleeve. The bushing is positioned radially between the outer sleeve and the intermediate sleeve. Axial retainers extend annularly about the first and second inner sleeve ends. The axial retainers are longitudinally moveable relative to the inner sleeve. The axial retainers have a preload feature including a flange segment that is resilient and deflects from an unbiased position when the axial retainers are in an uncompressed position to a biased position when the axial retainers are in a compressed position to apply a longitudinal preload force to the intermediate sleeve.Type: GrantFiled: April 6, 2017Date of Patent: December 17, 2019Assignee: The Pullman CompanyInventor: Joseph F. Cerri, III
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Patent number: 10457500Abstract: A pneumatic distribution system for pneumatically distributing material in an agricultural vehicle is described. In one example, the pneumatic distribution system comprises an air source having an outlet with different air pressures defining a pressure gradient across the outlet, and a plurality of inlet ports configured to receive air from the outlet for a plurality of distribution streams, comprising at least a first distribution stream with a first pressure loss value and a second distribution stream with a second pressure loss value that is greater than the first pressure loss value. The inlet ports for the first and second distribution streams are located relative to the pressure gradient such that the second distribution stream receives a higher air pressure than the first distribution stream.Type: GrantFiled: April 11, 2018Date of Patent: October 29, 2019Assignee: Deere & CompanyInventor: Stanley R. Borkgren
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Patent number: 10138813Abstract: An oil bearing to support a rotor of a turbine, especially of a gas turbine, wherein the rotor extends along a rotor axis coinciding with a bearing axis, has at least one oil bearing pad being lubricated by oil, including an oil sump suitable and located to collect the oil from the bearing pads by forces of gravity, including a drain system of the oil sump to conduct the oil away from the oil sump. The drain system includes at least three drain openings of the oil sump, wherein a first drain opening joining a first drain line is located between 4 o'clock and 5 o'clock according to the bearing axis, wherein a second drain opening joining a second drain line is located between 5:30 and 6:30, wherein a third drain opening joining a third drain line is located between 7 o'clock and 8 o'clock.Type: GrantFiled: July 7, 2014Date of Patent: November 27, 2018Assignee: Siemens AktiengesellschaftInventors: Thomas Andersson, Nigel Burns, Mikael Frejd
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Patent number: 9976444Abstract: A turbine engine case defines a centerline and a gaspath within the engine case. A fan is coupled to a fan shaft. A transmission couples the shaft to the fan shaft to drive the fan and comprises a gear system. A gutter system is positioned to capture lubricating fluid slung from the gear system. The gutter system includes a gutter extending partially circumferentially about the centerline having a first circumferential end edge. An inlet channel has an inlet at the gutter first circumferential end edge and locally radially outboard of the gutter. At least one vane is spaced apart from the gutter first circumferential end edge.Type: GrantFiled: June 29, 2016Date of Patent: May 22, 2018Assignee: United Technologies CorporationInventors: Fred NguyenLoc, San Quach
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Patent number: 9011009Abstract: A bearing seal particularly suitable for bearings in a direct acting end link of a vehicle suspension system includes a wiper seal between first and second bearing races of the bearing. The wiper seal is secured to one bearing race and extends radially outwardly toward and against the other bearing race.Type: GrantFiled: April 20, 2012Date of Patent: April 21, 2015Assignee: Illinois Tool Works Inc.Inventors: Jason K. Trotter, Dennis M. Mark, Troy S. Field
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Publication number: 20140286600Abstract: Provided herein is an apparatus including a stationary portion having a thrust cup; a rotating portion having a sleeve configured to be rotatable with respect to the stationary portion; a first axially extending space defined by the thrust cup and the sleeve, wherein the first axially extending space includes a second portion positioned above a first portion of the first axially extending space; a capillary seal in the first portion of the first axially extending space; and a labyrinth seal, in the second portion of the first axially extending space.Type: ApplicationFiled: June 9, 2014Publication date: September 25, 2014Inventors: Hiroki YAMADA, Junya MIZUKAMI, Tsuyoshi MORITA, Tetsuya MARUYAMA, Takuro IGUCHI, Troy Michael HERNDON, Norbert Steven PARSONEAULT, Jeffry Arnold LEBLANC
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Publication number: 20140270609Abstract: A synthetic resin-made thrust sliding bearing 1 includes a synthetic resin-made upper casing 2 which is fixed to a vehicle body side via a mounting member; a synthetic resin-made lower casing 3 which is superposed on the upper casing 2 so as to be rotatable about an axis O in a circumferential direction R relative to the upper casing 2; and a synthetic resin-made sliding bearing piece 5 disposed in a space 4 between the upper casing 2 and the lower casing 3.Type: ApplicationFiled: October 26, 2012Publication date: September 18, 2014Inventors: Kouichi Morishige, Takashi Horiguchi
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Publication number: 20140225344Abstract: A thrust sliding bearing 1 includes a synthetic resin-made lower casing 2, a synthetic resin-made upper casing 3 superposed on the lower casing 2, and a synthetic resin-made thrust sliding bearing piece 4 interposed between said upper casing 3 and the lower casing 2.Type: ApplicationFiled: April 21, 2014Publication date: August 14, 2014Applicant: Oiles CorporationInventors: Kouichi MORISHIGE, Ryohei Kaneko
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Publication number: 20130270790Abstract: A thrust sliding bearing 1 includes a synthetic resin-made lower casing 2, a synthetic resin-made upper casing 3 superposed on the lower casing 2, and a synthetic resin-made thrust sliding bearing piece 4 interposed between said upper casing 3 and the lower casing 2.Type: ApplicationFiled: December 20, 2011Publication date: October 17, 2013Applicant: OILES CORPORATIONInventors: Kouichi Morishige, Ryohei Kaneko
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Publication number: 20120326543Abstract: A bearing apparatus includes a stationary shaft, a first annular member, and a rotating member. The rotating member includes a first inner circumferential surface arranged opposite to the outer circumferential surface of the stationary shaft, and a second inner circumferential surface arranged opposite to an outer circumferential surface of the first annular member. A lubricating oil is arranged in a gap between a surface of a stationary member and the rotating member. On an upper side of an upper surface of the lubricating oil, the first annular member and the rotating member are arranged radially opposite to each other with a slight gap defined therebetween, so that a labyrinth seal is defined. The labyrinth seal and a fixing range over which the stationary shaft and the first annular member are fixed to each other are arranged to overlap with each other in a radial direction.Type: ApplicationFiled: September 4, 2012Publication date: December 27, 2012Applicant: Nidec CorporationInventors: Akihiro KIMURA, Teiichi HIRONO, Kunio SAKURADA, Kyoko HORISE, Takehito TAMAOKA, Kazuhiro SATO, Yoichi SEKII
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Patent number: 8328427Abstract: The sliding strut bearing has two rigid body positioned in a plastic housing and a synthetic resin sliding bearing positioned between the two rigid bodies. The rigid bodies are metal and provide structural rigidity allowing a spring seat to be incorporated into the plastic housing and an overall reduction in the height of the bearing.Type: GrantFiled: August 12, 2009Date of Patent: December 11, 2012Assignee: Schaeffler Technologies AG & Co. KGInventor: David M. Kellam
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Publication number: 20120267199Abstract: An exemplary bearing cartridge assembly includes an inner sleeve. An outer housing is supported for rotation relative to the inner sleeve. A bearing member within the outer housing and received about the inner sleeve facilitates rotation of the outer housing relative to the inner sleeve. The bearing member has an axial dimension (e.g., a width) that is smaller than an axial inner dimension of the outer housing. The bearing member is positioned relative to the inner sleeve and the outer housing to provide a first lubricant space between one side wall of the outer housing and the bearing member and a second lubricant space between an opposite side wall of the outer housing and the bearing member. There is at least one through passage between the first and second lubricant spaces to allow lubricant to move between them.Type: ApplicationFiled: November 13, 2009Publication date: October 25, 2012Inventor: Zlatko Strbuncelj
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Patent number: 8109674Abstract: A bearing assembly is presented having a novel lubricant sealing design that, in one embodiment, combines the sealing advantages of both a labyrinth-like seal in combination with a contact seal. The improved seal includes a non-rotating seal case working in closely spaced cooperation with a rotor to form a channel. The rotor is attached and turns with the shaft, inducing flow in the channel. Lubricant leakage is impeded by the tortuous fluid path formed by the convoluted channel of the labyrinth-like seal and the fluid shear forces developed by the turning shaft. Any lubricant leakage is further impeded by a resilient seal contacting the surface of the rotor and constricting the channel.Type: GrantFiled: April 27, 2009Date of Patent: February 7, 2012Assignee: Amsted Rail Company, Inc.Inventor: Paul A. Hubbard
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Publication number: 20100139270Abstract: A turbocharger oil discharge assembly (301, 501, 701, 901) can have a thrust collar (324, 524, 724, 924) with a first radially outwardly extending wall and a second radially outwardly extending wall to define a first annular channel. The first radially outwardly extending wall can have an annular flange that at least in part defines a second annular channel. The assembly can also have a thrust bearing (340, 540, 740, 940) having a radially inner end received in the first annular channel, and an insert (400, 600, 800, 1000). An oil collection chamber (440, 640, 840, 1040) can be defined at least in part by a drainage channel of the insert (400, 600, 800, 1000), the annular flange of the thrust collar (324, 524, 724, 924) and the thrust bearing (340, 540, 740, 940).Type: ApplicationFiled: September 27, 2007Publication date: June 10, 2010Applicant: BORGWARNER INC.Inventors: Silvio Koch, Edward R. Panek, Lauro Takabatake
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Patent number: 7661519Abstract: A roller device mountable rotatably on a spindle includes a roller body having a tubular wall with two opposite open-end portions. Each open-end portion is provided with a retaining member formed on an inner peripheral surface of the tubular wall. Two covers are inserted respectively into the open-end portions of the tubular wall, and are adapted to be sleeved rotatably around the spindle. Each cover has an annular end wall transverse to the corresponding open-end portion, a surrounding wall extending inwardly and axially from an outer periphery of the end wall and abutting against the inner peripheral surface of the tubular wall, and an engaging member formed on an outer peripheral surface of the surrounding wall and interlocking the retaining member. The retaining and engaging members have recess-and-protrusion interlocking surfaces.Type: GrantFiled: June 5, 2008Date of Patent: February 16, 2010Inventor: Shih-An Hong
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Patent number: 7367429Abstract: A device for feeding oil to a seat of a bearing (5) that supports a rotatable shaft (3) includes an annular oil reservoir (14) surrounding a seat of the bearing (5), an oil pump (8) having two spindles (10, 11) with oppositely extending, respectively feeding channels, oil delivery conduit means (20); and oil return conduit (24, 25, 26, 27) provided on axially opposite sides of the bearing seat.Type: GrantFiled: May 6, 2004Date of Patent: May 6, 2008Assignee: Pfeiffer Vacuum GmbHInventors: Armin Blecker, Heinrich Lotz
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Patent number: 7165891Abstract: A guide roller assembly includes a guide roller and a bearing that supports the roller body of the guide roller and is formed as a ring-shaped, segmented slide bearing.Type: GrantFiled: March 18, 2003Date of Patent: January 23, 2007Assignee: SMS Demag AGInventor: Klaus Giertz
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Patent number: 6986344Abstract: A bladeshaft assembly for a cutting saw includes a hollow tubular housing member. A shaft member extends coaxially through the tubular housing member and has at least one end that extends outwardly of the tubular housing member. At least one bearing member is disposed in surrounding relation to a portion of the shaft member. A seal is provided for sealing around the at least one end of the shaft member. A pulley member is mounted on the at least one end of the shaft member that extends outwardly of the tubular housing member. A tapered fit is formed cooperatively between the pulley member and the end of the shaft member so as to enable a press fit relation between the pulley member and the end of the shaft member. Additionally, first and second gauge points are formed respectively between the pulley member and the at least one end of said shaft member; the first and second gauge points engaging one another so as to establish a predetermined placement of the pulley member on the end of the shaft member.Type: GrantFiled: February 13, 2004Date of Patent: January 17, 2006Assignee: Electrolux Professional Outdoor Products, IncInventors: Donald F. Meister, Michael G. Kingsley, Douglas Dempsey
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Patent number: 6953284Abstract: A dustproof structure for a sleeve bearing includes an axial tube, a sleeve bearing, a dustproof cushion and a motor rotor. The motor rotor has a shaft seat and a shaft mounted thereto. The axial tube accommodates the sleeve bearing which bears an axial hole through which the shaft of the motor rotor is freely extended. The dustproof cushion is mounted in the axial tube and attached to an end surface of the sleeve bearing to prevent from entering foreign dust. An axial thickness of the dustproof cushion is used to compensate a clearance formed between the sleeve bearing and the shaft seat, and a diameter of the dustproof cushion is smaller than an outer diameter of the shaft seat to prevent from precipitation of dust on the sleeve bearing.Type: GrantFiled: December 19, 2003Date of Patent: October 11, 2005Assignee: Sunonwealth Electric Machine Industry Co., Ltd.Inventor: Wen-Kuan Chen
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Patent number: 6918701Abstract: A synthetic resin-made sliding bearing (1) includes a synthetic resin-made lower casing (2), a synthetic resin-made upper casing (3) superposed on the lower casing (2), a synthetic resin-made disk-shaped thrust sliding bearing piece (4) disposed between the upper and the lower casings (3) and (2), and a synthetic resin-made cylindrical radial sliding bearing piece (5) disposed between the upper and the lower casings (3) and (2).Type: GrantFiled: February 25, 2002Date of Patent: July 19, 2005Assignee: Oiles CorporationInventors: Atsushi Ueno, Kazuyuki Miyata
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Patent number: 6845986Abstract: A unitized seal assembly for use with roller or ball bearing assemblies is disclosed. The unitized seal assembly includes, among other things, a radially outer ring and a radially inner deflector ring. The outer ring includes a first shield element which defines a first sealing face. The radially inner deflector ring includes a second shield element which defines a second sealing face. The second sealing face is dimensioned and configured so as to correspond to the first sealing face such that when the first shield element is positioned in non-contacting proximity to the second shield element, a circuitous sealing labyrinth is formed between the first sealing face and the second sealing face.Type: GrantFiled: April 26, 2002Date of Patent: January 25, 2005Assignee: Stemco LLCInventors: Charles Robin Hood, Donald G. Wells, Mark N. Gold
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Patent number: 6814213Abstract: A molded plastics bearing housing for receiving a roller bearing which is press-fitted into and end of a conveyor roller tube is disclosed. The body portion of the housing extends radially inward as neck portion terminates in two rims, one rim sealing against the shaft supporting the conveyor roller and the other sealing against an inner race of the bearing. Both sealing rims are curved in section so as to make low angles with the roller shaft and bearing. The flexibility of this sealing arrangement absorbs axial movements between the conveyor shaft and the roller.Type: GrantFiled: November 25, 2002Date of Patent: November 9, 2004Assignee: JLV Industries Pty LTDInventors: Kingsley Bruce Dyson, Derek Alfred Sealey
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Publication number: 20030136628Abstract: Polyurethane conveyor roller end cap (10) internally houses rolling bearing (30) and externally is interference-fitted into an end of roller tube (52). The outside surface of body (12) of end cap (10), although arranged in large part to engage tube (52), has provided therein a circumferential line of blind recesses (44) designed to mininimise the amount of polyurethane used for the end cap while still allowing for the provision of load bearing column (58) of polyurethane.Type: ApplicationFiled: November 25, 2002Publication date: July 24, 2003Inventors: Kinglsey Bruce Dyson, Derek Alfred Sealey
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Patent number: 6283634Abstract: A transmission for automobiles comprising a casing, an input shaft and an output shaft, a power transmission member on the driving side, a power transmission member on the driven side, and a bearing comprising an outer ring, an inner ring, a plurality of balls between the outer and inner rings, and seal rings provided on the opposite ends of the bearing and having an inner peripheral edge fixed to the inner ring and an outer peripheral edge to form a small gap for a labyrinth seal between the outer peripheral edge and the outer ring whereby particle matter can go out of the bearing through the small gap during rotation of the bearing.Type: GrantFiled: April 12, 2000Date of Patent: September 4, 2001Assignee: NSK Ltd.Inventor: Kenji Tanaka
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Patent number: 6217218Abstract: A hydrodynamic bearing spindle motor comprising: a fixed member which has a radial bearing portion; a rotational member; a rotary shaft which is rotatably supported by the radial bearing portion of the fixed member and is secured to a substantially central location of the rotational member so as to extend in a vertical direction of the hydrodynamic bearing spindle motor such that the rotational member is disposed above the fixed member; lubricant which is provided between the radial bearing portion of the fixed member and the rotary shaft; a projection which is provided on a lower face of the rotational member so as to be disposed radially outwardly of the rotary shaft and has an oblique inner periphery expanding gradually radially outwardly towards a distal end of the projection; a lubricant receiving member which is secured to an upper face of the fixed member so as to be disposed radially outwardly of the projection; and oil repellent for repelling the lubricant, which is applied to the projection and itsType: GrantFiled: October 14, 1999Date of Patent: April 17, 2001Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroshi Inoue, Masashi Omura, Hiromichi Inomata, Kaoru Matsuoka, Shigeo Obata
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Patent number: 5925955Abstract: A labyrinth seal system of the present invention is found in a motor having a ball bearing ring, a shaft, and a labyrinth seal washer. The ball bearing ring has an inner bearing ring with an inner ring surface. In one embodiment the labyrinth seal system includes a shaft having a first shaft portion with a first shaft diameter and a second shaft portion with a second shaft diameter. The first shaft portion has a first outer shaft surface and the second shaft portion has a second outer shaft surface. A shaft shoulder may be formed between the first and second outer shaft surfaces. The second outer shaft surface is at least partially annularly adjacent the inner ring surface. Also included is a labyrinth seal washer having an annular leg that is positioned at least partially between the first outer shaft surface and the inner ring surface. The labyrinth seal system includes turbulence zones interspersed with narrow flow zones.Type: GrantFiled: May 15, 1997Date of Patent: July 20, 1999Assignee: SAE Magnetics (H.K.) Ltd.Inventor: Russell Hughes Norris
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Patent number: 5871282Abstract: The linear motion rolling guide unit has a top seal secured to the casing which comprises sealing members facing side areas of the upper surface of the track rail. Each of the sealing members comprises a lip seal portion and a labyrinth seal portion. The lip seal portion is inclined outwardly toward the raceway grooves of the casing and its front end contacts the side area of the upper surface of the track rail. The labyrinth seal portion is arranged on a central area side of the lip seal portion and does not contact the side area of the upper surface of the track rail. Hence, the labyrinth seal portions of the top seal prevent foreign matters from entering into the raceway grooves and the lip seal portions prevent leakage of grease.Type: GrantFiled: August 1, 1995Date of Patent: February 16, 1999Assignee: Nippon Thompson Co., Ltd.Inventor: Kouhei Yuasa
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Patent number: 5860746Abstract: A sealed roll bearing of a roll which has neck sleeves of high strength, preferably shrunk onto the roll necks of the roll, wherein the flanges of a profiled sealing ring sealingly engage over the end portions of the neck sleeve facing the end faces of the roll bodies and at least over portions of the end phases of the roll bodies. The flanges of the profiled sealing rings engaging over the end faces of the roll bodies are connected to the end faces of the roll bodies and the flanges of the profiled sealing rings engaging over the end portions of the neck sleeves surround the flanges of the profiled sealing rings engaging over the end portions of the neck sleeves so as to form a narrow gap, wherein the narrow gap is sealed by means of at least one sealing device.Type: GrantFiled: July 16, 1997Date of Patent: January 19, 1999Assignee: SMS Schloemann-Siemag AktiengesellschaftInventors: Konrad Roeingh, Matthias Tuschhoff, Karl-Friedrich Muller
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Patent number: 5714817Abstract: A labyrinth seal system of the present invention is found in a motor having a ball bearing ring, a shaft, and a labyrinth seal washer. The ball bearing ring has an inner bearing ring with an inner ring surface. In one embodiment the labyrinth seal system includes a shaft having a first shaft portion with a first shaft diameter and a second shaft portion with a second shaft diameter. The first shaft portion has a first outer shaft surface and the second shaft portion has a second outer shaft surface. A shaft shoulder may be formed between the first and second outer shaft surfaces. The second outer shaft surface is at least partially annularly adjacent the inner ring surface. Also included is a labyrinth seal washer having an annular leg that is positioned at least partially between the first outer shaft surface and the inner ring surface. The labyrinth seal system includes turbulence zones interspersed with narrow flow zones.Type: GrantFiled: September 13, 1996Date of Patent: February 3, 1998Assignee: Synektron CorporationInventor: Russell Hughes Norris
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Patent number: 5669717Abstract: A hydrodynamic sleeve bearing for supporting the shaft of a relatively large electromechanical machine. The bearing includes a base element and a cap element matable about the shaft to produce the bearing housing. The bearing housing when assembled includes a shaft receiving portion through which the shaft extends and a sump portion for containing a lubricant fluid. The design of the present invention minimizes the axial length of the shaft receiving portion to approximately that of the bearing liner contained therein. As a result, the weight of the cap element will be significantly reduced over many prior art constructions. Respective lubricant seals are attached at opposite end faces of the shaft receiving portion. The lubricant seals and the end faces are configured to permit lubricant fluid to flow directly back into the sump. The lubricant seals may be installed in a plurality of angular orientations, which may be particularly useful if a selected sensor device is installed thereon.Type: GrantFiled: October 15, 1996Date of Patent: September 23, 1997Assignee: Reliance Electric Industrial Co.Inventor: Gregory J. Kostrzewsky
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Patent number: 5666219Abstract: Rotary polygon mirror type light deflecting system having a labyrinth ring fixed to an end of a fixed shaft. An outer circumferential surface of a labyrinth ring is caused to confront an inner circumferential surface of a polygon mirror while interposing a small gap therebetween in a radial direction. Further, a lower portion of a circular hole of the polygon mirror is fitted with a cylindrical sleeve of a hub to fix the polygon mirror to the hub. The polygon mirror and the labyrinth ring are made of the same material, e.g., aluminum or an aluminum alloy. The small gap is made as small as possible.Type: GrantFiled: October 31, 1996Date of Patent: September 9, 1997Assignee: Kabushiki Kaisha Sankyo Seiki SeisakushoInventors: Yutaka Ishizuka, Koichi Katakura
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Patent number: 5494355Abstract: A bearing assembly includes a shaft rotating about an axis and a bearing being acted upon by a liquid lubricant and supporting the shaft. A device for removing the lubricant from the bearing assembly includes at least one sealing assembly adjacent the bearing. The sealing assembly has a seal surrounding the shaft and a collector chamber disposed between the seal and the bearing. The collector chamber surrounds the shaft and receives the lubricant from the bearing along the shaft. The lubricant is removed from the collector chamber through a drain conduit. According to one embodiment, a funnel protrudes into the collector chamber for collecting the lubricant and removing the lubricant to the drain conduit.Type: GrantFiled: January 5, 1995Date of Patent: February 27, 1996Assignee: Siemens AktiengesellschaftInventor: Detlef Haase
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Patent number: 5480232Abstract: In a rotor bearing housing comprised of split half sections (10) and adapted to be joined at horizontal joining surfaces (12) of the half sections, and wherein each half section includes a beating recess flanked on either side thereof by a seal recess (16, 18); and a pair of annular bearing seals (24), each comprising a pair of half segments (26, 28), each segment adapted to be received in a respective seal recess in a split half sections of the housing, each segment having a pair of substantially horizontal interface surfaces (30, 32) at diametrically opposite sides thereof, the improvement comprising a groove (46) formed in each interface surface (30, 32), extending across a radial thickness dimension of the segment, such that opposing grooves in opposing interface surfaces combine to form a pair of oil channels in each annular bearing seal.Type: GrantFiled: May 26, 1994Date of Patent: January 2, 1996Assignee: General Electric Co.Inventor: Joseph K. Lendway
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Patent number: 5478020Abstract: A solid waste material comminuting system having a electric motor for providing rotary motion, a pair of cutter stacks with cutter elements of one stack interleaved with cutter elements of the other, and gear means to transmit the rotary motion of the electric motor to counter-rotate cutter elements of one stack with cutter elements of the other. Each of the cutter stacks comprises a central shaft journaled for rotation and a bearing module at each end of the central shafts. Each bearing module comprises an end housing, and a pair of insertable pre-assembled bearing assemblies mountable in each of said end housings. One bearing assembly has a thru-hole for journaling a first shaft for rotation and a second bearing assembly has a thru-hole for journaling a second shaft for rotation.Type: GrantFiled: July 19, 1994Date of Patent: December 26, 1995Assignee: Disposable Waste Systems, Inc.Inventors: Joseph W. Chambers, Sr., Robert T. Sabol, Craig J. Fennessy
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Patent number: 5476326Abstract: A synthetic resin bearing comprised of synthetic resin-made upper and lower bearing cases and a synthetic resin-made bearing member having a disk-shaped thrust bearing piece and a hollow-cylindrical radial bearing piece with a radially extending slit. The bearing member is disposed such that the radial bearing piece is kept in sliding contact with an outer peripheral surface of a hollow cylindrical portion of the lower bearing case, and the thrust bearing piece is kept in sliding contact with a bottom of an annular recess formed in the lower bearing case. The upper bearing case is assembled to the lower bearing case such that an annular engaging hook portion is snappingly fitted over an annular engaging projecting portion of the lower bearing case.Type: GrantFiled: November 22, 1994Date of Patent: December 19, 1995Assignee: Oiles CorporationInventors: Atsushi Ueno, Tetsuya Aida, Kazuo Kato
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Patent number: 5301771Abstract: In the transmission of a centrifugal compressor, where a gear is located adjacent to a lubricated bearing, a barrier is provided between the bearing and the gear to restrain the flow of oil to the gear and thereby reduce the pumping and windage losses that would otherwise occur. An oil port is made to communicate with the internal area of the barrier to thereby provide drainage of the accumulated oil to a sump.Type: GrantFiled: August 22, 1991Date of Patent: April 12, 1994Assignee: Carrier CorporationInventors: Vishnu M. Sishtla, Thomas M. Zinsmeyer
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Patent number: 5271676Abstract: The bearing pedestal for the rotating shaft 12 includes journal and axial thrust bearings 16 and 26, respectively. Both of the journal and thrust bearings have passages 70 and 80, respectively, and recesses 74 and 82 in the respective pad faces for flowing high pressure lubricant between the pads and the shaft to displace the shaft and pads relative to one another to minimize the required breakaway torque and metal-to-metal contact. Each thrust bearing includes a plurality of circumferentially spaced pads 26 and lubricant directors 30 between the pads. The lubricant director includes a rib 34 extending generally tangentially and radially outwardly to channel lubricant from a preceding pad to a succeeding pad in the direction of shaft rotation and to channel the lubricant for flow tangentially from the thrust bearing into an annular cavity 39 for return to sump 42.Type: GrantFiled: July 30, 1992Date of Patent: December 21, 1993Assignee: General Electric CompanyInventors: Richard K. Keck, Blake Wilson, Steve Hendricks, Thomas R. Byrne
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Patent number: 5238166Abstract: A sealing assembly for regulating the flow of lubricant to a rotating shaft and to the bearings which support it. The shaft is supported on rolling-contact bearings to which are coupled bearing collars. The bearing collars serve as spray-off edges for removing lubricant from the bearings, which after removal, is received in a groove formed between the bearing and a seal member. This groove is in liquid communication with an opening to the surface of the shaft which, as it rotates, centrifuges lubricant from the groove. The shaft is encircled by the seal member which includes several chambers for receiving lubricant sprayed off the shaft at several spray-off edges. At the end of the seal member furthest from the rolling-contact bearings an outlet for the lubricant of the same size as the inlet is provided, thereby reducing pressure differences between the inlet and the outlet.Type: GrantFiled: November 18, 1992Date of Patent: August 24, 1993Assignee: Siemens AktiengesellschaftInventors: Egbert Schwarstein, Helmut Holzel
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Patent number: 5074567Abstract: A unitary structure comprising a mechanical seal for rotating shafts consisting of a single ring member. The ring member has at one end a series of radial grooves in the internal bore and a trough extending across the grooves to an end of the ring. The ring also has at a second end at least one external labyrinth groove extending radially and serving to inhibit contamination. A sloped collection chamber having an expulsion port lies between the inner radial grooves and the external labyrinth groove. A non-metallic, flexible rotor is fitted within the sloped collection chamber whereby free flow across the axial width of the collection chamber is arrested and fluids are directed outwardly towards said expulsion port.Type: GrantFiled: April 10, 1989Date of Patent: December 24, 1991Inventor: David C. Orlowski
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Patent number: 5005990Abstract: A centrifugal pump of the type specially adapted to be used as a boiler feed pump and including a bearing system at the driven end of the pump comprising a bearing chamber housing a flexible bearing supporting the pump shaft and being cooled by the fluid that is being pumped which is fed to the bearing through passages in the pump casing. The pump further includes controlled leakage seals located at each end of the bearing and adapted to leak the cooling fluid at controlled rates into both the chamber housing the pump impeller and a fluid collection chamber. The leakage into the fluid collection chamber is withdrawn and reused in the usual manner. The pump shaft engages additional seals which serve to prevent the pump cooling fluid from leaking to the outside of the pump.Type: GrantFiled: April 27, 1990Date of Patent: April 9, 1991Assignee: Ingersoll-Rand CompanyInventor: Timothy L. Wotring
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Patent number: 4875334Abstract: A spindle is provided which is intended especially for use in the mounting arrangement of a spinning rotor within the spinning housing of a textile spinning machine. The spindle comprises an outer sleeve, two rows of balls disposed in cages, and a shaft whose external end portion is adapted to be driven by a drive arrangement for inducing rotary motion. The internal end portion of the shaft is disposed within the outer sleeve and forms a dynamically elastic portion of the shaft having a smaller diameter than that of the main spindle shaft. The spinning rotor is pressed on the dynamically elastic portion of the shaft. Between the rotor space, behind the spinning rotor and a compensation space, a rotary, or non-rotary, gasket is provided which includes a labyrinth knife.Type: GrantFiled: November 17, 1988Date of Patent: October 24, 1989Assignee: Zavody na vyrobu lozisk, Povazska BystricaInventors: Zdenek Rajsigl, Frantisek Kriz
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Patent number: 4822182Abstract: A rotary motion driving apparatus includes a gas bearing assembly for supporting a rotatable shaft and is usable in any ambience such as a vacuum ambience. The rotatable shaft has two flange-like collar portions formed on the opposite ends of the rotatable shaft. The collars are used as the members to be supported by the gas bearing assembly with respect to the thrust direction. A driving motor has a rotor and a stator, the rotor being fixed to one of the collars of the rotatable shaft and the stator being fixed to the gas bearing assembly. The other collar of the rotatable shaft functions as an output end of the rotary drive produced by the motor. Around such drive outputting collar of the rotatable shaft, a sealing plate having a plurality of grooves or recesses is provided. The sealing plate is maintained out of contact with the collar, and suitable vacuum is supplied to the grooves of the sealing plate.Type: GrantFiled: July 20, 1988Date of Patent: April 18, 1989Assignee: Canon Kabushiki KaishaInventors: Koichi Matsushita, Hiroyuki Suzuki
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Patent number: 4741630Abstract: An assembly for the leakage-free removal of bearing oil from sliding bearings for rotating shafts of high-speed machines, includes a sliding bearing axially divided into bearing cups, contactless shaft seals near bearing end surface preventing escape to the surroundings of bearing oil fed to surfaces of the sliding bearing, an annular oil collecting canal disposed at least at one side of the sliding bearing between a shaft seal and a bearing end surface having an outer peripheral wall with an arcuate cutout formed therein with a slot-shaped opening arc defining an outlet opening through which the collecting canal discharges an oil flow, the opening arc covering a circumferential angular range of the shaft extending at least from the geodetically lowest point of the outer contour of the collecting canal at most to a position of the outer contour defined by the parting line of the cups as seen in shaft rotation direction, an oil collecting box with an oil flow space and an inlet opening matched to the outlet crType: GrantFiled: May 4, 1987Date of Patent: May 3, 1988Assignee: Kraftwerk Union AktiengesellschaftInventors: Heinrich Oeynhausen, Ernst Winkelhake
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Patent number: 4541773Abstract: This invention provides in centrifugal motor pumps and the like a safety structure embodying a bearing bushing coaxially mounted with respect to the pump shaft in a space between the shaft and the body of the pump, with the bushing designed to act as a hydrodynamic bearing in the case of decentering of the pump shaft or similar disfunction only.Type: GrantFiled: December 6, 1984Date of Patent: September 17, 1985Assignee: Jeumont-Schneider CorporationInventors: Michel Drevet, Jean Trouillet
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Patent number: 4465385Abstract: A flexible spring bearing comprising a substantially cylindrical configuration with an arcuate portion being disposed circumferentially about the cylindrical configuration. The arcuate portions may be convexly curved outward or concavely curved inward. Although many combinations are possible, the preferred embodiment is a concave portion at one end and a convex portion at the other end. A thrust cap is incorporated to be inserted over the convex portion thereby evenly distributing the applied pressure throughout the flexible spring bearing and also regulating the flexibility of the convex portion. Furthermore, a main bearing race and thrust race are incorporated to be contiguous to the end of the concave portion. The main bearing race along with the cylindrical configuration rotates, via a bearing means, upon the thrust race. The bearing means may be an annular protrusion disposed concentric with the cylindrical configuration.Type: GrantFiled: November 10, 1980Date of Patent: August 14, 1984Inventor: Hans U. Pannwitz
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Patent number: 4428629Abstract: A protection and seal member for rolling bearings, arranged to be interposed between the inner race and the outer race of the bearing in order to isolate the rolling bodies from the surrounding ambient by providing a seal between the said races. The main characteristics of the protection member consists in that it is configured like a ring and is made of an elastomeric material so as to be capable of being snap-coupled with the outer race of the bearing on which it is mounted, and exerting on the outer surface of the inner race and on the inner surface of the outer race a sealing action between the outer ambient and the cavity formed between the said outer and inner races.Type: GrantFiled: November 27, 1981Date of Patent: January 31, 1984Assignee: RIV-SKF Officine di Villar Perosa S.p.A.Inventors: Franco Colanzi, Angelo Vignotto
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Patent number: RE39948Abstract: A solid waste material comminuting system having a an electric motor for providing rotary motion, a pair of cutter stacks with cutter elements of one stack interleaved with cutter elements of the other, and gear means to transmit the rotary motion of the electric motor to counter-rotate cutter elements of one stack with cutter elements of the other. Each of the cutter stacks comprises a central shaft journaled for rotation and a seal-bearing assembly/module at each end of the central shafts. Each bearing assembly/module comprises an end housing, and a pair of insertable pre-assembled seal-bearing elements/assemblies mountable in each of said end housings. One seal-bearing element/assembly has a thru-hole for journaling a first shaft for rotation and a second seal-bearing element/assembly has a thru-hole for journaling a second shaft for rotation.Type: GrantFiled: April 22, 2005Date of Patent: December 25, 2007Assignee: JWC EnvironmentalInventors: Joseph W. Chambers, Sr., Robert T. Sabol, Craig J. Fennessy