Lip Seal Patents (Class 384/147)
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Patent number: 11366410Abstract: A developer container to store developer includes a rotator, a bearing, and a seal. The rotator includes a rotary shaft made of metal. The bearing supports the rotary shaft. The seal is made of fiber, disposed toward an inside of the developer container in the bearing, and contacts an outer circumferential surface of the rotary shaft.Type: GrantFiled: May 11, 2021Date of Patent: June 21, 2022Assignee: RICOH COMPANY, LTD.Inventors: Naohiro Kawashima, Kei Saito, Kentarou Matsumoto, Kunihiro Ohyama
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Publication number: 20150147121Abstract: An offshore structure comprises: an original structure comprising a main platform supported via a foundation on a seabed; and an extension structure comprising a platform extension positioned laterally of the main platform and a platform extension support, depending downwardly from the platform extension, into contact with the foundation, so as to support the extension structure directly on the foundation.Type: ApplicationFiled: April 9, 2013Publication date: May 28, 2015Inventors: David Leonard Hall, Gary Dean, Duncan Knight, Anthony Clark, Andrew Kirkpatrick, Paul Oliver, Bruce John Munro, Lindsay Mckay, Alan Rodger, Eric Reid, Donald Macleod
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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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Patent number: 9004769Abstract: A synthetic resin-made thrust sliding bearing 1 includes a synthetic resin-made upper casing 12, a synthetic resin-made lower casing 22, a synthetic resin-made thrust sliding bearing piece 33 interposed between the upper casing 12 and the lower casing 22, an outer elastic seal member 47 having an inner elastically deformable lip portion 43 and an outer elastically deformable lip portion 46, and an inner elastic seal member 54 having an outer elastically deformable lip portion 50 and an inner elastically deformable lip portion 53.Type: GrantFiled: March 12, 2014Date of Patent: April 14, 2015Assignee: Oiles CorporationInventors: Kouichi Morishige, Ryohei Kaneko
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Publication number: 20150036954Abstract: A railway axlebox assembly including a bearing including an inner ring adapted to be mounted on a shaft with an axial preload and an outer ring adapted to be mounted in a housing, a backing ring delivering axial support of the inner ring on an inner end portion of the shaft is provided. The assembly includes a seal that is disposed between the backing ring and the inner end portion of the housing. The sealing includes an elastomeric sealing lip bearing with a frictional contact on a sealing surface provided on the backing ring.Type: ApplicationFiled: July 31, 2014Publication date: February 5, 2015Applicant: AKTIEBOLAGET SKFInventors: Thierry Le Moigne, Laurent Paulin
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Patent number: 8783953Abstract: A bearing assembly includes an annular inner member defining a first outer surface and a first inner surface, and a shaft extending therefrom. The bearing assembly includes an annular outer member defining a second outer surface and a second inner surface which is adapted to engage a recess defined in the first outer surface. An annular flexible seal defines a base adapted to engage the outer member, a head adapted to engage a groove defined in one of the inner member or the shaft, and a neck having a curvilinear cross-section which is adapted to bias the base toward the recess and the head toward the groove. The flexible seal is positioned adjacent to one end of the outer member and extends between the inner member and outer member. An annular low-friction liner has a cross-section that defines an interior area adapted to engage the flexible seal head.Type: GrantFiled: July 9, 2012Date of Patent: July 22, 2014Assignee: Roller Bearing Company of America, Inc.Inventors: James Voisine, Bradley Smith
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Publication number: 20140199007Abstract: A synthetic resin-made thrust sliding bearing 1 includes a synthetic resin-made upper casing 12, a synthetic resin-made lower casing 22, a synthetic resin-made thrust sliding bearing piece 33 interposed between the upper casing 12 and the lower casing 22, an outer elastic seal member 47 having an inner elastically deformable lip portion 43 and an outer elastically deformable lip portion 46, and an inner elastic seal member 54 having an outer elastically deformable lip portion 50 and an inner elastically deformable lip portion 53.Type: ApplicationFiled: March 12, 2014Publication date: July 17, 2014Applicant: OILES CORPORATIONInventors: Kouichi MORISHIGE, Ryohei KANEKO
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Publication number: 20140169709Abstract: A system for providing sealed shaft bearing is disclosed. The system can include housing and one or more end caps. The end caps can house one or more seals and one or more bearings for supporting a shaft. The housing can be watertight to prevent water from infiltrating the housing and to prevent lubricant, if any, from escaping the housing into the environment. The system can use a multi-piece design to facilitate repair and maintenance. The system can be easily retrofitted into systems, such as marine systems, that use conventional plain shaft bearings.Type: ApplicationFiled: December 17, 2013Publication date: June 19, 2014Applicant: Ride the Ducks International, LLCInventors: Brian Deckard, Frank English
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Patent number: 8708568Abstract: A synthetic resin-made thrust sliding bearing 1 includes a synthetic resin-made upper casing 12, a synthetic resin-made lower casing 22, a synthetic resin-made thrust sliding bearing piece 33 interposed between the upper casing 12 and the lower casing 22, an outer elastic seal member 47 having an inner elastically deformable lip portion 43 and an outer elastically deformable lip portion 46, and an inner elastic seal member 54 having an outer elastically deformable lip portion 50 and an inner elastically deformable lip portion 53.Type: GrantFiled: February 15, 2012Date of Patent: April 29, 2014Assignee: Oiles CorporationInventors: Kouichi Morishige, Ryohei Kaneko
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Publication number: 20140093198Abstract: A bearing assembly includes an inner member having an outer engagement surface and an outer race. The outer race has an inner surface defining a first end and a second end and an inner engagement surface therebetween, the inner engagement surface is positioned on the outer engagement surface of the inner member. A first annular groove is formed in the inner surface, proximate one of the first end and the second end. A second annular groove is formed in the inner surface and is positioned axially inward from the first annular groove. An external seal is positioned in first annular groove and slidably engages the inner member. An internal seal is positioned in the second annular groove and slidingly engages the inner member.Type: ApplicationFiled: December 6, 2013Publication date: April 3, 2014Applicant: ROLLER BEARING COMPANY OF AMERICA, INC.Inventor: James Voisine
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Publication number: 20140016888Abstract: A sealed spherical bearing includes a ball disposed in a race, an annular seal extending between the race and the ball, and a retainer secured to the seal. A retainer first leg axially outward facing surface is secured to a seal first leg axially inward facing surface, and a retainer second leg radially inward facing surface is secured to a seal first leg radially outward facing surface. The retainer and the seal are separately formed elements. The retainer and the seal secured thereto is press-fit into a first annular groove of the race such that a first groove radially inward facing surface engages a retainer second leg radially outward facing surface, a first groove axially outward facing surface engages a retainer first leg axially inward facing surface, and the retainer is fixed relative to the race.Type: ApplicationFiled: July 8, 2013Publication date: January 16, 2014Inventors: Marc Harper, Andrew Henn
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Patent number: 8596870Abstract: A dust seal is provided with a tubular fitting portion, a bush end surface abutting portion, a lip portion and a sealing projection integrally formed. The sealing projection is formed to project in an axially opposite direction to the lip portion from a radial inner section of the bush end surface abutting portion and abuts against a chamfered portion of a bush in such a manner as to overlap the chamfered portion. Therefore, at the time of supplying lubricant between the bush and a connecting pin, the sealing projection can prevent a part of the lubricant from entering between an end surface of the bush and the bush end surface abutting portion of the dust seal to maintain a sealed state therebetween. In consequence, the dust seal can be stably held on the inner peripheral side of a boss member, preventing the pulling-out of the dust seal.Type: GrantFiled: March 26, 2009Date of Patent: December 3, 2013Assignees: Hitachi Construction Machinery Co., Ltd., Nippon Valqua Industries, Ltd.Inventors: Hideki Akita, Osamu Gokita, Akiko Sato, Eiji Negoro, Tomiyoshi Yamazaki
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Publication number: 20130279834Abstract: The invention relates to a sealing arrangement made of a preferably integral peripheral rubber-like sealing material for sealing the sealing space for use in a rotary connection, wherein the sealing space is confined by a sealing region (17) on the bearing side and the sealing arrangement is used between at least one outer ring (or outer rotatable bearing component) (7) and at least one inner ring (or inner rotatable bearing component) (8) rotatable against one another about the same central axis, wherein the sealing arrangement is not irretrievably fixed in a groove but is connected by positive and non-positive engagement, so as to be releasable and replaceable again, to a recess (2) introduced on a surface parallel to the horizontal outer surface (20; 21) of the rotatable bearing component.Type: ApplicationFiled: September 13, 2011Publication date: October 24, 2013Applicant: IMO HOLDING GMBHInventors: Hermann Willaczek, Henrik Albertsen
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Publication number: 20130022299Abstract: A sealing system for a spherical plain bearing assembly is provided and includes a flexible seal defining a base and a head. At least one low-friction liner is disposed on the flexible seal.Type: ApplicationFiled: July 9, 2012Publication date: January 24, 2013Applicant: ROLLER BEARING COMPANY OF AMERICA, INC.Inventors: James Voisine, Bradley Smith
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Patent number: 8348291Abstract: A suspension strut includes a suspension strut bearing and a deflector seal. The suspension strut bearing has an upper portion mounted above a lower portion and a bearing seal mounted therebetween. The upper portion does not rotate with a steerable assembly while the lower portion does, with the upper portion including a lower surface adjacent to a seal opening. The deflector seal is elastomeric and is a toroidal shape, having a radially inner portion and a radially outer portion. The inner portion is secured against the lower portion of the strut bearing, and the outer portion is cantilevered outward from the inner portion to allow for elastic flexing of the outer portion. The outer portion allows for upward elastic flexing into contact with the lower surface of the upper portion of the strut bearing when a fluid or contaminant impinges upon a lower surface of the outer portion.Type: GrantFiled: August 9, 2011Date of Patent: January 8, 2013Assignee: GM Global Technology Operations LLCInventors: Myron P. Sedman, David M. Caldwell, Ferdous M. Ghazi, James Logan, Jr., William A. Morris
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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: 20110262063Abstract: A sealing device is provided for sealing a space between a hub and a spindle pivotally connected by a bearing, the hub being coaxially mounted on the spindle and extending in an axial direction and the bearing having an inner ring. The sealing device includes a radial shaft seal including a shell portion having an outer static sealing surface disposeable against the hub and a hinge portion having a radial sealing lip. A sleeve member includes an inner static sealing surface disposeable against the spindle, a running surface contactable by the sealing lip and a sleeve portion. The sleeve portion extends in the axial direction beyond a side surface of the bearing inner ring and is disposeable about a shoulder diameter of the bearing inner ring.Type: ApplicationFiled: April 21, 2010Publication date: October 27, 2011Applicant: Aktiebolaget SKFInventors: Rico Dittmar, Thilo Beck, Bernd Stephan, Arno Stubenrauch, Peter Volpert, Thomas Will, John M. Dominguez, Linas L. Maskaliunas
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Patent number: 8016489Abstract: A sliding bearing 1 includes an upper casing 3 having an annular lower surface 2; a lower casing 5 which is superposed on the upper casing 3 so as to be rotatable about an axis O of the upper casing 3 and has an annular upper surface 4 opposed to the annular lower surface 2; an annular thrust sliding bearing piece 6 disposed in an annular space 36 between the annular lower surface 2 and the annular upper surface 4; and a seal means 38 disposed on an outer peripheral side of the annular space 36.Type: GrantFiled: May 10, 2007Date of Patent: September 13, 2011Assignee: Oiles CorporationInventors: Ryohei Kaneko, Atsushi Yoshida
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Publication number: 20110194873Abstract: A bearing seal unit comprises: a bearing member that supports a rotating shaft so as to freely rotate; a seal member provided integrally at one side along an axial direction of the bearing member to seal the rotating shaft; a connecting part extended along the axial direction from one member to the other member of the bearing member and the seal member and having an end side in the extending direction which protrudes more in the direction intersecting the axial direction than a base end side to connect the bearing member integrally with the seal member.Type: ApplicationFiled: August 17, 2010Publication date: August 11, 2011Applicant: FUJI XEROX CO., LTD.Inventor: Shinya ABE
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Publication number: 20110188791Abstract: A sealing arrangement which has a long or increased service life and high reliability even in soiled or aggressive surroundings. The sealing arrangement for a bearing has a first bearing ring and second bearing, which is rotatable relative to the first bearing ring, and a seal that is arranged in the region of the first bearing ring and that extends in the direction of the bearing periphery. The second bearing ring has a peripheral scaling surface and the seal has at least two peripheral sealing lips that sealingly rest on the sealing surface.Type: ApplicationFiled: August 27, 2008Publication date: August 4, 2011Applicant: SCHAEFFLER TECHNOLOGIES GMBH & CO. KGInventor: Christian Proeschel
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Publication number: 20110156464Abstract: According to a first aspect of the invention, there is provided a bearing structure including: a resin bush having a flange formed to be brought into contact with a plate face around a bearing hole from one side, a locking edge formed to be locked with the plate face around the bearing hole from the other side, and a circular through-hole formed to bear the support shaft inserted therethrough, wherein, upon receiving a load applied to the support shaft, the entire resin bush is flexibly displaced so that an inner circumferential surface of the through-hole is aligned with a hole edge of the bearing hole and the support shaft is born by the hole edge of the bearing hole.Type: ApplicationFiled: December 27, 2010Publication date: June 30, 2011Applicant: TS TECH CO., LTD.Inventors: Hiroshi IZAWA, Makoto TAKEUCHI, Takahiro KOBORI
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Publication number: 20110142385Abstract: The invention relates to a sealing element (3) for sealing a rolling bearing with respect to a rolling journal (2) of a roller (1), wherein the sealing element (3) comprises: —a first part (10) located away from the rolling journal in a peripheral groove (9) in the rolling bearing; and—a second part (11) located close to the rolling journal in the form of a sealing lip, abutting to the rolling journal; characterized by a part (10.5) located on the sealing side of a latching device for latching the part (10) of the sealing element located away from the rolling journal (2) to a part (9.5) on the rolling journal side of the latching device in the peripheral groove (9). The invention further relates to a rolling bearing and to a method for mounting the sealing element (3) in the rolling bearing.Type: ApplicationFiled: August 5, 2009Publication date: June 16, 2011Applicant: SMS SIEMAG AKTIENGESELLSCHAFTInventor: Karl Keller
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Patent number: 7914209Abstract: A bearing seal includes an outer seal easily displaceable in the radial direction, an inner ring as a ring-shaped rigid portion not extendable in the radial direction, an inner seal having a seal lip, and an outer ring arranged on the outer peripheral portion of the outer seal, in which the spring constant of the inner seal is set to be larger than the spring constant of the outer seal. The sealing performance between the inner seal and the pin is ensured by using the ring-shaped rigid portion as a boundary. When the pin is displaced in the radial direction, the ring-shaped rigid portion is integrally displaced with the pin via the inner seal, and the displacement of the ring-shaped rigid portion can be absorbed by the outer seal.Type: GrantFiled: February 5, 2009Date of Patent: March 29, 2011Assignee: Komatsu Ltd.Inventors: Hiroshi Yamamoto, Ryuusuke Komura, Jun Maruyama
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Patent number: 7901140Abstract: A bearing eye for a tensioning system used in flexible drives. For sealing an annular gap between a fixedly positioned support part and a longitudinal bore of the bearing eye a sealing element is provided which encompasses two radially aligned sealing lips. To this end, in the installed state, the sealing lip is respectively supported on a support disc positioned on the support part and the corresponding further sealing lip is supported on a wall of the bearing eye in the region of the installation space.Type: GrantFiled: June 16, 2006Date of Patent: March 8, 2011Assignee: Schaeffler KGInventor: Werner Petri
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Patent number: 7891878Abstract: The invention relates to a spherical plain bearing, having an inner ring with a spherically curved outer surface and an outer ring having a spherically curved inner surface, a seal being arranged in a continuous groove in the outer ring. The seal has an annular support and rubs against the outer surface of the inner ring. The seal has two mutually spaced resilient sealing lips facing in opposite directions. The first sealing lip being oriented outwards and the second sealing lip being oriented inwards.Type: GrantFiled: June 22, 2006Date of Patent: February 22, 2011Assignee: Schaeffler KGInventors: Harald Peschke, Olaf Wilhelm, Thomas Fickert
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Publication number: 20110019949Abstract: A dust seal is provided with a tubular fitting portion, a bush end surface abutting portion, a lip portion and a sealing projection integrally formed. The sealing projection is formed to project in an axially opposite direction to the lip portion from a radial inner section of the bush end surface abutting portion and abuts against a chamfered portion of a bush in such a manner as to overlap the chamfered portion. Therefore, at the time of supplying lubricant between the bush and a connecting pin, the sealing projection can prevent a part of the lubricant from entering between an end surface of the bush and the bush end surface abutting portion of the dust seal to maintain a sealed state therebetween. In consequence, the dust seal can be stably held on the inner peripheral side of a boss member, preventing the pulling-out of the dust seal.Type: ApplicationFiled: March 26, 2009Publication date: January 27, 2011Applicants: HITACHI CONSTRUCTION MACHINERY CO., LTD., NIPPON VALQUA INDUSTRIES, LTD.Inventors: Hideki Akita, Osamu Gokita, Akiko Sato, Eiji Negoro, Tomiyoshi Yamazaki
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Publication number: 20100239197Abstract: A bearing for bearing a torsion bar spring of a roll stabilization system of a track vehicle comprises a split bearing bush for the torsion bar spring and a split bearing shell which comprises said bearing bush and which can be connected to the body/bogie. A pair of seals is mounted at one end of the bearing and consists of an inner, flexible inner seal sitting on the torsion bar spring and an outer, flexible outer seal sitting in the bearing shell. Every seal of the pair of seals comprises at least one peripheral sealing lip and the seals interact with each other via the sealing lips in a sealing manner.Type: ApplicationFiled: December 7, 2006Publication date: September 23, 2010Applicant: SIEMENS AG OESTERREICHInventor: Gerhard Hojak
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Patent number: 7748907Abstract: A bearing seal includes an outer seal easily displaceable in the radial direction, an inner ring as a ring-shaped rigid portion not extendable in the radial direction, an inner seal having a seal lip, and an outer ring arranged on the outer peripheral portion of the outer seal, in which the spring constant of the inner seal is set to be larger than the spring constant of the outer seal. The sealing performance between the inner seal and the pin is ensured by using the ring-shaped rigid portion as a boundary. When the pin is displaced in the radial direction, the ring-shaped rigid portion is integrally displaced with the pin via the inner seal, and the displacement of the ring-shaped rigid portion can be absorbed by the outer seal.Type: GrantFiled: February 5, 2009Date of Patent: July 6, 2010Assignee: Komatsu Ltd.Inventors: Hiroshi Yamamoto, Ryuusuke Komura, Jun Maruyama
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Patent number: 7736138Abstract: A compressor comprises: a cylinder with a compression space; a suction port and a discharge port which communicate with the compression space in the cylinder; a support member which closes an opening of the cylinder; a rotary shaft which is rotatably supported on the support member; a compression member whose one surface crossing an axial direction of the rotary shaft is inclined continuously between a top dead center and a bottom dead center and which is rotated and compresses a fluid to discharge the fluid via the discharge port; and a vane which is disposed between a suction port and the discharge port, abuts on one surface of the compression member and partitions the compression space in the cylinder into high and low pressure chambers.Type: GrantFiled: June 13, 2007Date of Patent: June 15, 2010Assignee: Sanyo Electric Co., Ltd.Inventors: Takahiro Nishikawa, Hirotsugu Ogasawara, Takao Kanayama, Yoshiaki Hiruma, Manabu Takenaka, Masazumi Sakaniwa, Akira Hashimoto, Junichi Suzuki
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Publication number: 20100027926Abstract: A rotating seal for a gas turbine engine includes: (a) an annular seal body; (b) a sealing component carried by the seal body which is adapted to form one-half of a rotating seal interface; and (c) an impeller carried by the seal body which comprises a plurality of radially-inwardly-extending impeller blades.Type: ApplicationFiled: July 31, 2008Publication date: February 4, 2010Applicant: GENERAL ELECTRIC COMPANYInventors: Ning Fang, Ray Harris Kinnaird, Gary Paul Moscarino
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Publication number: 20100014791Abstract: A lubrication seal such as an oil seal is described for providing a lubrication barrier to confine lubrication in a bearing with a first bearing ring and second bearing ring, comprising a support ring that rotates with one of the bearing rings, mounted in the support ring are a first seal ring and a second seal ring which seal rings are suitable for forming the lubrication barrier with a sealing surface that rotates with the other bearing ring and which support ring is displaceable from a first sealing position in which the first seal ring forms the lubrication barrier with a first sealing area and the second seal ring does not engage the sealing surface to a second sealing position in which the second seal ring forms the lubrication barrier. The sealing surface comprises a second sealing area that only cooperates with the second seal ring after the support ring is displaced into the second sealing position.Type: ApplicationFiled: May 28, 2009Publication date: January 21, 2010Applicant: Darwind Development & Demonstration BVInventors: Cornelus Versteegh, Herman Luimes
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Patent number: 7585113Abstract: A MEMS switch and a method of manufacturing the same are disclosed. The MEMS switch includes: a substrate including a trench, a ground line and a signal line having an opened portion; a moving plate separated from the substrate at a predetermined space and including a contact member for connecting an electrode plate and the opened portion and having a deep corrugate to insert the trench; and a supporting member for supporting the moving plate. Such a MEMS switch prevents the thermal expansion and the stiction problem.Type: GrantFiled: May 24, 2006Date of Patent: September 8, 2009Assignee: Electronics and Telecommunications Research InstituteInventors: Jae Woo Lee, Chang Han Je, Sung Weon Kang
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Publication number: 20090180719Abstract: A sliding bearing 1 includes an upper casing 3 having an annular lower surface 2; a lower casing 5 which is superposed on the upper casing 3 so as to be rotatable about an axis O0 of the upper casing 3 and has an annular upper surface 4 opposed to the annular lower surface 2 of the upper casing 3; an annular thrust sliding bearing piece 7 disposed in an annular space 6 between the annular lower surface 2 and the annular upper surface 4; seal means 8 disposed on an outer peripheral side of the annular space 6; and seal means 9 disposed on an inner peripheral side of the annular space 6.Type: ApplicationFiled: May 10, 2007Publication date: July 16, 2009Inventors: Kazuyuki Miyata, Ryohei Kaneko
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Patent number: 7549647Abstract: The invention relates to a sealing device for roller bearings, comprising a journal seal (4), which is arranged upstream on the roller-ball side of the annular seal (8) which is connected in a rigid manner to an annular projection (7) of the bearing housing (5). The sealing lip (18) of the sealing device is applied to the front side (10) of the roller (1) by means of a sealing contact. The aim of the invention is to improve the sealing device in such a manner that the sealing lip of the annular seal is barely impinged upon by cooling means mixed by impurities, making it long lasting and ensuring that no undesired water can penetrate into said outlet.Type: GrantFiled: November 11, 2004Date of Patent: June 23, 2009Assignee: SMS Demag AGInventors: Konrad Roeingh, Karl Keller, Rolf Hücker
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Patent number: 7513690Abstract: A bearing seal includes an outer seal easily displaceable in the radial direction, an inner ring as a ring-shaped rigid portion not extendable in the radial direction, an inner seal having a seal lip, and an outer ring arranged on the outer peripheral portion of the outer seal, in which the spring constant of the inner seal is set to be larger than the spring constant of the outer seal. The sealing performance between the inner seal and the pin is ensured by using the ring-shaped rigid portion as a boundary. When the pin is displaced in the radial direction, the ring-shaped rigid portion is integrally displaced with the pin via the inner seal, and the displacement of the ring-shaped rigid portion can be absorbed by the outer seal.Type: GrantFiled: April 30, 2004Date of Patent: April 7, 2009Assignee: Komatsu Ltd.Inventors: Hiroshi Yamamoto, Ryuusuke Komura, Jun Maruyama
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Patent number: 7481635Abstract: A compressor having a compression element with a cylinder in which a compression space is constituted, a suction port and a discharge port which communicate with the compression space in the cylinder, a support member which closes an opening on the cylinder and a rotary shaft which is rotatably supported by a main bearing as a bearing formed on the support member. A compression member, whose one surface crosses an axial direction of the rotary shaft is inclined continuously between a top dead center and a bottom dead center and is disposed in the cylinder to be rotated by the rotary shaft, compresses a fluid sucked from the suction port to discharge the fluid via the discharge port. A vane which is disposed between the suction port and the discharge port to abut on one surface of the compression member partitions the compression space in the cylinder into a low pressure chamber and high pressure chamber.Type: GrantFiled: September 7, 2005Date of Patent: January 27, 2009Assignee: Sanyo Electric Co., Ltd.Inventors: Takahiro Nishikawa, Hirotsugu Ogasawara, Takao Kanayama, Yoshiaki Hiruma, Manabu Takenaka, Masazumi Sakaniwa, Akira Hashimoto, Junichi Suzuki
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Patent number: 7461977Abstract: A pivot assembly to permit relative pivotal motion of a sleeve of the pivot assembly about a pivot axis. The pivot assembly may contain a spherical bearing assembly therein. The spherical bearing assembly may include a spherical portion and a tubular portion, wherein the tubular portion is operable to form a sealing surface, e.g., a sealing member may seal directly with the tubular portion.Type: GrantFiled: September 3, 2004Date of Patent: December 9, 2008Assignee: Exmark Manufacturing Company, IncorporatedInventors: Benjamin P. Davis, Garry W. Busboom
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Patent number: 7458725Abstract: The present invention provides a bearing sealing method for sealing a bearing member which is interposed between a first member and a second member and allows relative rotation between the first member and the second member. The method includes the steps of keeping the bearing member under a sealed state by interposing a seal between the first member and second member; and releasing the bearing member from the sealed state by bending a first seal element of the seal outward only upon pressure increase in the sealed bearing member. The first seal element is normally in contact with one of the first member and the second member.Type: GrantFiled: December 7, 2005Date of Patent: December 2, 2008Assignee: Kabushiki Kaisha Toyota JidoshokkiInventor: Kenichi Katae
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Publication number: 20080019624Abstract: A sealing device can include a bearing having a first ring and a second ring, a metal ring connected to the first ring, an elastic body connected to the metal ring. The elastic body includes a projection part having a lip part extending from the metal ring toward the first ring so as to be elastically in contact with the first ring and grooves positioned adjacent the lip parts.Type: ApplicationFiled: July 17, 2007Publication date: January 24, 2008Applicant: JTEKT CorporationInventor: Tomomasa KUBO
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Patent number: 7063342Abstract: An improved apparatus is provided for use in a vehicular suspension arm. A through-hole is formed in one end of the suspension arm, and a bearing fits centrally in the through-hole. A pair of cylindrical spacer members are inserted into the opposed ends of the through-hole. Annular sealing members are interposed between the cylindrical spacer members and the through-hole. One end of the suspension arm is installed to the frame by means of a bolt inserted through the bearing and the cylindrical spacer members. At one end of each cylindrical spacer member, there is integrally molded a flange portion, having a larger outer diameter than the inner diameter of the through-hole. Using the described apparatus, it is possible to substantially prevent water splash, earth and sand from directly contacting the sealing member, in order to reduce the possibility of contamination.Type: GrantFiled: October 29, 2003Date of Patent: June 20, 2006Assignee: Honda Giken Kogyo Kabushiki KaishaInventor: Bunzo Seki
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Publication number: 20020186904Abstract: An improved seal configuration for use primarily with a spherical plain bearing wherein the sealing member includes a base with two outwardly extending lips, one extending in an inner direction and one extending in an outer direction. Both of the lips engage the bearing surface of an inner race member. The seal base member of the seal is mounted within a seal mounting groove defined in the bearing surface of the outer race member. The seal is preferably circular and includes a downwardly flexibly resilient inner and outer lip configuration which provide dual sealing and enhanced contaminant control for a spherical plain bearing.Type: ApplicationFiled: June 7, 2001Publication date: December 12, 2002Inventor: Werner Hartl
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Patent number: 6210041Abstract: An improved bearing usable, among other applications, in a suspension system for heavy vehicles and in other machines includes an internal member, a journal fitted to the internal member and an external member fitted to the journal member, at least one end of the external member extending beyond at least one and of the journal member and defining a recess for receiving a seal member, to seal against either the bushing, shaft or journal member, for preventing intake of extraneous matter such as dirt and for preventing leakage of lubricant from the bearing. A method of fabrication of bearings Alternatively, the journal and internal member may comprise a single part includes the steps of machining or pressfitting an inner member with a journal section in turn fitted or slipped into an external member. Apparatus for fabricating a bearing component comprises a slide tool with at least two adjustable receiving mounts for receiving a cutting tool and a pressblock.Type: GrantFiled: August 8, 1995Date of Patent: April 3, 2001Inventor: William A. West
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Patent number: 6129533Abstract: The invention relates to a fluid-conveying machine, in particular, a pump having a component rotating in a stationary housing part inside an annular gap. The stationary housing part separates an interior having a higher product pressure from an exterior having a lower pressure. A rotating component is mounted in an external bearing which is sealed with respect to the interior via a sealing system. In order to improve the sealing, the invention provides that the annular gap is formed between two sliding bearing shells which comprise extremely hard, wear-resistant materials and, in accordance with the operating principle of a radial sliding bearing, form a first pressure-reducing stage. A feedback device, which feeds back the leakage from this first sealing stage into the conveying process of the machine, is connected downstream of the first pressure-reducing stage. A second sealing stage is arranged axially downstream of the feedback device.Type: GrantFiled: March 18, 1999Date of Patent: October 10, 2000Assignee: Joh. Heinr. Bornemann GmbHInventors: Jens-Uwe Brandt, Gerhard Rohlfing, Vejen Hristov
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Patent number: 5957461Abstract: A unitary radial lip seal assembly to provide a fluid tight seal between a shaft and a housing bore through which the shaft extends includes an annular rigid retainer, a resilient body portion secured to the retainer and defining at least one sealing lip to seal against the rotatable shaft and a sleeve bearing member supported by said seal assembly outboard of the sealing lip. In one form the bearing member is rigidly connected to the retainer, in another, it is resiliently mounted to provide shaft vibration dampening. In the latter embodiment, the bearing member includes a radial wall urged into frictional engagement with a radial wall of the resilient body to restrict rotation of the bearing member.Type: GrantFiled: September 15, 1997Date of Patent: September 28, 1999Assignee: John Crane Inc.Inventor: Donald Charles Ulrich
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Patent number: 5947496Abstract: A low lash idler arm assembly includes upper and lower bushings which are provided for supporting a hub of an idler arm on a support member. The assembly uses the engagement of a flange nut onto the support member to axially position the bushings in their final position.Type: GrantFiled: October 2, 1997Date of Patent: September 7, 1999Assignee: American Axle & Manufacturing, Inc.Inventors: Kenneth G. Kraft, Jeffrey L. Kincaid
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Patent number: 5675862Abstract: In a wiper shaft channel sleeve for a protruding wiper shaft (2) of a wiper motor (1) attached to a vehicle outer body component, in which a channel sleeve (5), made of an elastic material, placed in an opening 3 in the vehicle outer skin, is provided with a sliding bearing (6) and a sealing lip (7) and, further, the wiper shaft is supported and protected, the sliding bearing (24) and the sealing lip (28) are placed in a sliding sleeve (22) axially movable in the channel sleeve (5), made of elastic material, and the channel sleeve (5), with its main body of a high-durometer elastic material and, by means of an attachment clip (17) made of a supple elastic material, is rigidly connected to the channel sleeve, and placed in the opening (3) of the body outer skin.Type: GrantFiled: November 26, 1996Date of Patent: October 14, 1997Assignee: Ford Global Technologies, Inc.Inventor: Hans-Georg Reinl
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Patent number: 5541710Abstract: A bearing unit is used to suspend shafts within a developer unit housing of a xerographic device. An annular bushing is used with a bearing surface to support an end journal of the shaft. The bushing also has a seal retention shoulder which extends axially from the bearing surface portion. An annular sealing member is positioned against the seal retention shoulder such that it remains stationary with the annular bushing. The sealing member includes two or more sealing lips for contacting the end journal with a stagnation zone between the sealing lips. The sealing lips are on deflection arms extending toward the interior of the developer unit housing.Type: GrantFiled: September 25, 1995Date of Patent: July 30, 1996Assignee: Katun CorporationInventors: Daniel A. Stewart, Paul A. Martinson
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Patent number: 5490730Abstract: The improved slide bearing assembly comprises at least a shaft and a bush that is formed of a porous iron-base sintered material and is characterized in that the bush is impregnated with a lubricant oil having a viscosity of 240-1500 cSt. The bearing assembly can be operated in slow- and high-pressure applications without oil refillings for a prolonged period of at least several years. The shaft is preferably formed of an iron or a steel member that have been subjected to a treatment of surface modification. The slide bearing assembly is preferably used in such an environment that the working pressure applied to the sliding surfaces is at least 6.0 kgf/mm.sup.2 and that the sliding speed is in the range 2-5 cm/sec.Type: GrantFiled: October 20, 1994Date of Patent: February 13, 1996Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Hideki Akita, Makoto Ota, Hideaki Nakatani, Kazuyoshi Hatano, Manabu Ogasawara
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Patent number: 5490731Abstract: The invention relates to a sleeve bearing provided with lip seals, which are each integrated into front areas of the sleeve bearing particularly for use in rough mixed friction operation. The lip seals each consist of a holding part, a support part and a pretensioned sealing lip, which rests linearly on an associated shaft/axis in the built-in state. The holding part force-lockingly engages into an annular groove. A cavity, which is formed between the shaft/axis and the holding part or rather the support part can be filled with a lubricant.Type: GrantFiled: January 12, 1995Date of Patent: February 13, 1996Assignee: Wieland-Werke AGInventors: Michael Scharf, Gert Schneider
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Patent number: RE36405Abstract: The improved slide bearing assembly comprises at least a shaft and a bush that is formed of a porous iron-base sintered material and is characterized in that the bush is impregnated with a lubricant oil having a viscosity of 240-1500 cSt. The bearing assembly can be operated in slow- and high-pressure applications without oil refillings for a prolonged period of at least several years. The shaft is preferably formed of an iron or a steel member that have been subjected to a treatment of surface modification. The slide bearing assembly is preferably used in such an environment that the working pressure applied to the sliding surfaces is at least 6.0 kgf/mm.sup.2 and that the sliding speed is in the range 2-5 cm/sec.Type: GrantFiled: February 2, 1998Date of Patent: November 23, 1999Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Hideki Akita, Makoto Ota, Hideaki Nakatani, Kazuyoshi Hatano, Manabu Ogasawara