O-rings Patents (Class 384/152)
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Patent number: 11795995Abstract: Provided is a journal bearing, including: a carrier ring; a pad; and an oil supply nozzle configured to supply oil to a portion between a rotation shaft and the pad. The pad includes: an inner peripheral surface opposed to the rotation shaft; and an upstream end surface located on an upstream side of the inner peripheral surface in a rotating direction of the rotation shaft. The inner peripheral surface includes a partially cylindrical surface, and a recessed portion, which is arranged on an upstream side of the partially cylindrical surface, and forms an opening space for storing the oil. The opening space includes: an oil inlet port opened at the upstream end surface; and an oil outlet port opened toward the rotation shaft. The pad includes a backflow preventing portion configured to prevent the oil in the opening space from flowing back to the oil inlet port.Type: GrantFiled: November 5, 2019Date of Patent: October 24, 2023Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Naokatsu Takara, Yosuke Uchida, Saya Okano
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Patent number: 11525480Abstract: A split bearing protector with a flexible design that adds improved moisture protection to a bearing and can be installed without removing the bearing from the machine in which it is installed.Type: GrantFiled: March 2, 2021Date of Patent: December 13, 2022Assignee: Evapco, Inc.Inventor: Davey Joe Vadder
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Patent number: 11085491Abstract: A bearing sleeve element comprising a thin sheet of metal like bronze or brass with “dog bone” shaped pattern cut out through metal sheet in combination with a thin sheet of Teflon compressed and trapped inside “dog bone” shaped cavities of metal sheet in order to serve as a low friction bearing between two sliding surfaces.Type: GrantFiled: June 8, 2020Date of Patent: August 10, 2021Inventor: Robert Janian
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Patent number: 9618048Abstract: A bypass cooling system and method for tilting pad journal and titling pad thrust bearings wherein the cooling may be achieved by spraying the cool inlet oil downhill with gravity instead of always in the direction of the shaft rotation. A bypass cooling system always sprays the cool inlet oil downhill, with gravity instead of always in the direction of shaft rotation.Type: GrantFiled: August 12, 2014Date of Patent: April 11, 2017Assignee: Lufkin Industries, LLCInventors: John C. Nicholas, Thomas P. Shoup, Adam Fiegl, Don H. Rockefeller, Josh Ronan
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Patent number: 9097260Abstract: A fan bearing retaining structure includes a base and a ring member. The base has a bearing cup projected from one side thereof, and the bearing cup internally defines an axial bore for receiving a bearing therein. The ring member is fitted around an outer side of the bearing cup and defines an opening, such that an inner side of the opening tightly contacts with the outer side of the bearing cup to apply a radially inward compression toward the axial bore. With these arrangements, a portion of the axial bore corresponding to the ring member fitted around the bearing cup has a reduced inner diameter to thereby effectively retain the bearing in the bearing cup, enabling a fan to be manufactured at reduced cost.Type: GrantFiled: May 15, 2012Date of Patent: August 4, 2015Assignee: Asia Vital Components Co., Ltd.Inventors: Chu-Hsien Chou, Shao-Jun Hong
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Patent number: 8870459Abstract: In a self-adjusting bushing bearing for engagement with a bearing shaft, a bearing housing is provided. A bearing sub-assembly is received inside of said bearing housing, and said bearing sub-assembly being adapted to receive said bearing shaft. The bearing sub-assembly comprises at least two bearing segments and at least one springy element engaged with the bearing housing which compresses the bearing segments toward one another.Type: GrantFiled: June 26, 2013Date of Patent: October 28, 2014Assignee: CADventures, Inc.Inventor: Thomas J. Danowski
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Patent number: 8814432Abstract: A seal-bearing assembly to be inserted into the seal cavity of a mechanical device to provide a seal and a bearing surface to eliminate whip in a rotating and/or reciprocal cylindrical member. The seal-bearing assembly is particularly well suited for use in a reciprocal pump and between the steam lance and fixed steam tube in a sootblower. The assembly includes at least a pair of outer substantially rigid cylindrical bearings having an inner bore to be positioned over the cylindrical member and at least one complimentary flexible textile packing ring disposed between the two outer bearing members. In assemblies including an additional bearing, it is surrounded by at least one flexible packing on each side. The inner bore of the bearing members provide a bearing surface for eliminating whip of the moving elements in the device.Type: GrantFiled: March 13, 2013Date of Patent: August 26, 2014Assignee: Seal-Ryt CorporationInventors: Lynne A. Thoma, Mark R. Wilkinson
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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: 8641285Abstract: A sliding bearing (10) having a bearing body (11) which receives a shaft (1) in a guide bore (26) and is fabricated by a noncutting production process, wherein the bearing body (11) serves for at least indirect arrangement in a preferably fixedly arranged element (2), in particular a housing. According to the invention, it is provided that the bearing body (11) is provided on its outer circumference with a receptacle (14) for an elastic bearing element (12) for bearing against the fixed element (2).Type: GrantFiled: October 7, 2011Date of Patent: February 4, 2014Assignee: Robert Bosch GmbHInventor: Uwe Roessler
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Publication number: 20140003748Abstract: In a self-adjusting bushing bearing for engagement with a bearing shaft, a bearing housing is provided. A bearing sub-assembly is received inside of said bearing housing, and said bearing sub-assembly being adapted to receive said bearing shaft. The bearing sub-assembly comprises at least two bearing segments and at least one springy element engaged with the bearing housing which compresses the bearing segments toward one another.Type: ApplicationFiled: June 26, 2013Publication date: January 2, 2014Applicant: CADVENTURES, INC.Inventor: Thomas J. Danowski
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Patent number: 8231275Abstract: A slide bearing bush with an integrated sealing element permits a relatively simple and economical production of the slide bearing bush. The slide bearing bush includes a bush part and a cover part. The bush part and/or the cover part is provided with an annular groove formed for holding the sealing element, and the slide bearing bush comprised of the bush part and the cover part possesses a cylindrical outside contour.Type: GrantFiled: July 25, 2008Date of Patent: July 31, 2012Assignee: Aktiebolaget SKFInventors: Thomas Krause, Burkard Beck, Peter Schmehr
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Patent number: 8038351Abstract: A self-lubricating bearing assembly for a hinge of a turbine engine nozzle is described. The hinge includes a bolt and a bell crank housing. The bearing assembly includes a sleeve, a pair of bushings, liners, a thrust washer and a nut. The sleeve includes a tubular and a shoulder portion. Each bushing has an inner and an outer diameter. The liners include first liners, each bonded to the inner diameter of a respective one of the bushings, a second liner disposed between the shoulder portion and a bushing, and a third liner disposed between the thrust washer and a bushing. When assembled, the tubular portion is disposed over an outer diameter of the bolt, the outer diameters of the bushings are disposed within an inner diameter of the bell crank housing, and the nut is affixed between the thrust washer and the bolt to secure the hinge assembly.Type: GrantFiled: March 27, 2008Date of Patent: October 18, 2011Assignee: Roller Bearing Company of America, Inc.Inventors: Robert Arnold, Phillip Beausoleil
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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: 7278840Abstract: A viscous seal for fluid transfer devices that deviates from the conventional wisdom of avoiding contact between the seal and a rotating drive shaft of the fluid transfer device. Instead of avoiding contact, contact between the seal and drive shaft is used to effect axial alignment of a sealing sleeve with the shaft. As a result, the viscous seal is compliant in that the sealing sleeve can follow the axis of the drive shaft. Accordingly, the sealing sleeve can fit snugly around the drive shaft for more effective prevention of leakage of low or any viscosity fluid along the drive shaft, but without any significant radial load being applied to the sealing sleeve that might cause undue wear or damage due to galling.Type: GrantFiled: June 28, 2004Date of Patent: October 9, 2007Assignee: Parker-Hannifin CorporationInventor: Robert E. Oehman, Jr.
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Patent number: 6558630Abstract: A device and method of continuous introduction of liquid solution samples into a system from a chamber containing the solution.Type: GrantFiled: June 14, 2000Date of Patent: May 6, 2003Inventors: Hans Degn, Henrik Ørsnes, Thomas Graf
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Patent number: 6132096Abstract: A bearing bush (1) having a groove (7) which has a curved contour and is located inside an annular bead (2) projecting outwards with respect to the bush body (6). A sealing member in the form of an o-ring (4) may be inserted into the groove (7). The bead for accommodating the sealing member is produced by an upsetting process.Type: GrantFiled: December 18, 1998Date of Patent: October 17, 2000Assignee: Glyco-Metal-Werke Glyco B.V. & Co. KGInventors: Philippe Damour, Klaus Kirchhof
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Patent number: 5964325Abstract: An improved bushing assembly for the inboard end of a brake cam shaft is provided with a bushing which establishes a grease flow pathway within the bushing assembly. Grease enters a cavity formed from a pair of housing halves which contain the bushing through a grease zerk which is directly connected to a first radial hole in the bushing, so the fresh grease injected goes directly to the grease reservoir between the bushing and the shaft. Flow channels provided in the bushing interior surface guide the grease around the shaft to a second radial hole which is diametrically opposite the first radial hole. A seal on the shaft restricts grease flow outwardly from the bushing along the shaft. Grease may be purged through the second radial hole to an annular space between the bushing and the interior surfaces of the housing halves, from which the grease may exit the housing around the periphery of a window in one of the housing halves through which the grease zerk passes.Type: GrantFiled: October 10, 1997Date of Patent: October 12, 1999Assignee: Dana CorporationInventors: Kent Eugene Davison, Martin G. Blessing
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Patent number: 5938343Abstract: A rotating shaft motor or cartridge incorporates an o-ring which surrounds the rotating shaft and is borne on a carrier. As supported on the carrier, the o-ring does not normally block the bearing passages which would prevent the smooth distribution of oil throughout the motor. However, the carrier and o-ring combination are designed to allow the o-ring to be forced into an opening between the shaft and sleeve for completely sealing the remaining portion of the bearing during filling. The rotating shaft includes a central reservoir, having one or more grooves or passages communicating with the hydrodynamic bearing surfaces and ending in a septum or rubber plug which is inserted in an opening in the shaft.Type: GrantFiled: November 3, 1997Date of Patent: August 17, 1999Assignee: Seagate Technology, Inc.Inventors: Alan L. Grantz, Klaus Kloeppel, John Dunfield
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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: 5547288Abstract: An external metal housing (10) is formed of two abutting metal plates (11, 12), each having a perimeter support wall (13) and an outwardly extending annular protruding wall (14) defining a bushing receiving area. An internal annular bushing (22) is accommodated within the receiving area and has two annular grooves (28) receiving two O-rings (30). A zerk fitting (38) extends through a closed-edge opening (16) of the external metal housing (10) and threads through the internal bushing (22) to deliver lubricant directly to the internal cylindrical surface of the internal annular bushing and to the facing surface of a camshaft extending through said internal bushing. The bushing is made of molybdenum impregnated nylon.Type: GrantFiled: February 24, 1995Date of Patent: August 20, 1996Assignee: Euclid Industries, Inc.Inventors: Paul R. Quinn, Richard R. Kempski, Douglas J. King
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Patent number: 5490021Abstract: A support device (1) with a first bearing part (33) and a second bearing part (51). The first bearing part (33) is in a housing (11), while the second bearing part (51) is provided on a locking piece (53) fastened to the housing (11). Leakage along the locking piece (53) of a fluid present between the bearing parts (33, 51) is prevented by the use of a sealing element (59). The sealing element (59) is provided under pretension between the locking piece (53) and a pressure member (61, 87) fastened to the housing (11), the locking piece (53) bearing on the housing (11) under the influence of the pretension of the sealing element (59). Since the locking piece (53) bears on the housing (11) under the influence of the pretension of the sealing element (59), the locking piece (53) is fixed in an accurate position relative to the housing (11 ). An accurately defined mutual position of the first and the second bearing part (33, 51) is achieved in this manner.Type: GrantFiled: April 5, 1994Date of Patent: February 6, 1996Assignee: U.S. Philips CorporationInventors: Johannes C. A. Muller, Robert C. H. Boereboom, Jelm Franse
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Patent number: 5460454Abstract: The invention comprises a bearing arrangement for a rotating shaft in a windshield wiper driving mechanism, of the kind comprising a housing having a bore through which the shaft passes and including a bearing sleeve which comprises at least an inner radial flange, a first face of which forms a first shoulder for the axial positioning of a seal provided in the bore which cooperates with the opposite cylindrical surfaces of the bore and of the shaft. According to the invention, one of the ends of the bearing sleeve abuts against a second shoulder formed by the second face of the radial flange, and the internal diameter of the inner radial flange is greater than the internal diameter of the bearing sleeve.Type: GrantFiled: July 20, 1994Date of Patent: October 24, 1995Assignee: Valeo Systemes d'EssuyageInventor: Pascal Renoux
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Patent number: 5312116Abstract: The present invention provides an O-Ring mounted in a square shaped chamber in a housing. The O-Ring contains a groove adapted to move the O-Ring inner bore toward the center of the shaft in response to a pressurized fluid. The chamber is fed by a liquid or a gas. Internal pressure in the housing created primarily by rotation of the shaft, or by a pump from an outside source, feeds fluid to the chamber through openings in the housing, thereby expanding the O-Ring to lightly contact the shaft. This is a major benefit over conventional O-Rings, seals and prior art that enables the O-Ring to provide minimum drag and maximum sealing of internal lubricants for bearing operation. Another major benefit of this self-adjusting O-Ring is that it automatically compensates for wear, increasing its service life to many times that of conventional O-Rings.Type: GrantFiled: June 21, 1991Date of Patent: May 17, 1994Assignee: Lawrence D. QuagliaInventor: Lawrence D. Quaglia
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Patent number: 5281034Abstract: The support of a shaft (7) which is rotatably supported in through-holes of the housing (1) of a pressure chamber in bushes (11, 12) provided with sealing rings and which is secured against axial displacement by securing rings (21, 22) is to be improved in such a way that a low-wear and secure arrangement of the shaft (7) and bearing bushes (11, 12) is achieved. For this purpose, it is suggested that each through-hole (9, 10) of the housing (1) comprise a collar (15, 16) which projects radially inward and forms a support for a projection which is directed radially outward and with which each bush (11, 12) is provided, the front side (19, 20) of the latter facing the pressure chamber simultaneously forming a support for a securing ring (21, 22) arranged on the shaft (7), wherein the two bearing sides of the shaft (7) have the same diameter.Type: GrantFiled: June 16, 1992Date of Patent: January 25, 1994Assignee: H & K Antriebstechnik GmbHInventor: Walter J. Hertlein
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Patent number: 4869601Abstract: Hydrostatic journal bearing assemblies are described which include a housing member having a generally circular bore therethrough, a journal bearing member having a bore therethrough for the support of a shaft, the journal bearing member being located within the bore of the housing wherein the journal bearing member comprises at least one generally annular sleeve portion, an increased diameter flange portion at the axially inner end of the journal bearing member, the journal bearing member being sealed against the ingress of pressurized fluid into a space between the bore of the housing member and the outer surface of the annular sleeve portion, the annular sleeve portion being pivotally supported intermediate the axially outer end of the journal bearing member and the flange portion and the bearing member having means for access of a source of pressurized fluid between the bore of the journal member and the shaft to be supported.Type: GrantFiled: July 11, 1988Date of Patent: September 26, 1989Assignee: T&N Technology LimitedInventor: Peter A. J. Scott
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Patent number: 4863290Abstract: A marine propulsion lower unit including a gear case supporting a propeller shaft adapted to carry a propeller, which gear case has an upper surface including therein a cylindrical well defined by cylindrical peripheral wall and a bottom wall having therein an axial bore, a combined shift rod bushing and gear case seal assembly comprising a hub having an axis and axially spaced first and second ends, which hub also includes therein an axial bore extending from the first end, and which hub also includes therein a counter bore extending from the second end, and communicating with the axial bore in coaxial relation thereto, a flange extending from the hub and received in the well in the gear case, a pair of attachment arms extending from the hub in transverse radially outward relation to the axis of the hub and fixedly connected to the gear case, a plug member received in the counter bore and having an axial bore communicating with the axial bore in the hub, a shift rod extending through the axial bore in the plType: GrantFiled: April 21, 1988Date of Patent: September 5, 1989Assignee: Outboard Marine CorporationInventors: Steven R. McNeill, Scott N. Burmeister, Matthew H. Mondek, Roger B. Whipple
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Patent number: 4768889Abstract: A seal assembly for sealing between a pair of bearing rings wherein one of the rings has an annular groove for the seal comprising elastic annular ring member having at least one circumferential projection and at least one sealing disk and a retainer member. The volume of the elastic ring, which has been increased by the retaining sections for the parts to be held in place being in the preinstalled state at least the same as that of annular groove in one of the bearing rings.Type: GrantFiled: December 19, 1986Date of Patent: September 6, 1988Assignee: SKF GmbHInventors: Norbert Loser, Peter Schmehr, Leopold Tilgner
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Patent number: 4764035Abstract: A bearing assembly comprised of a split-ring annular bearing member having overlapping free ends and being molded of self-lubricating plastic material having a pressure velocity value at least equal to 1800 at 100 feet per minute surface speed and an annular continuous elastomeric combined sealing member and spring mounted in supporting relation to the split-ring bearing member and formed of a flowable rubber-like material, the combined sealing and spring member being mounted within a groove behind the bearing member so as to continually apply light pressure thereto to urge the same against the bearing surface so as to maintain a seal thereat; the combined sealing and spring member being of right-angled polyganol cross-sectional configuration and have concaved sides and convex corner lobes and being more narrow than the groove and sufficiently forgiving to avoid undue pressure and consequent wear upon the bearing member over the full range of temperature variations, created by high speed relative movement betType: GrantFiled: November 6, 1987Date of Patent: August 16, 1988Assignee: Quadion CorporationInventor: Richard M. Boyd
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Patent number: 4718779Abstract: A compound bearing consisting of an outer and an inner member movable relative to each other and between which are disposed load carrying annular members. The load carrying annular members comprise a pair of deformable plastic rings held between the outer and inner members under compression, and a metallic ring insert disposed between and separating the two deformable rings. The outer member is formed of two cup-shaped tubular members press-fitted over the metallic ring insert.Type: GrantFiled: September 2, 1986Date of Patent: January 12, 1988Assignee: O & S Manufacturing CompanyInventor: William H. Trudeau
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Patent number: 4671430Abstract: An apparatus for apportioning powdered material into each of a series of containers is disclosed which includes a powdered material hopper having a dispensing opening and a rotatable filling head contiguous to the dispensing opening. The rotatable filling head includes a plurality of radially situated chambers each having an open outer end for displacement between the material hopper and the series of containers. A conventional pneumatic source is provided for assisting the filling and emptying of the chambers during the apportioning process. Within each chamber, the volume of powdered material received is defined by a piston having a porous surface. The piston engages a threaded stem longitudinally fixed in position yet rotatable about its longitudinal axis to effect displacement of the piston head and support longitudinally within the chamber. A seal is provided at the radially inner end of the threaded stem to ensure positive pneumatic action through the porous piston surface.Type: GrantFiled: May 20, 1985Date of Patent: June 9, 1987Assignee: Eli Lilly and CompanyInventor: Harold B. Dinius
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Patent number: 4659240Abstract: A bearing protector attached to a shaft abuts against the inner race of a bearing mounted to a housing. The body of the protector extends over substantially all of the outer race. The protector does not contact the outer race due to a running clearance. Side loads which would otherwise contact the bearing seals are held by the protector which is secured to and rotates with the shaft.Type: GrantFiled: July 14, 1986Date of Patent: April 21, 1987Inventor: Thomas E. Rogus
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Patent number: 4619534Abstract: A rotary drill bit comprising a bit body having at least one depending leg at its lower end having a generally cylindrical bearing journal, a roller cutter of generally conical shape having a recess therein receiving the journal a bearing system for rotatably mounting the roller cutter on the journal, and a lubrication system for providing lubricant to the bearing system comprising a reservoir of lubricant, passaging in the bit body for fluid communication between the reservoir and the bearing system, and a seal member between the roller cutter and the journal blocking flow of lubricant out of the bit body. The seal member is of annular shape and is held in a seal cavity between the roller cutter or the journal, with an annular engagement face thereof in sealing, sliding frictional engagement with one of the bearing members.Type: GrantFiled: September 12, 1984Date of Patent: October 28, 1986Assignee: Reed Tool CompanyInventors: Jeffery E. Daly, Robert J. Kotch
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Patent number: 4588310Abstract: A bearing assembly comprises an outer bearing housing and at least one inner bearing element, which serves for rotatably mounting a component. The bearing assembly is intended to be submerged in water or in a slurry and defines outwardly open gaps, which are inclined to the axis of the bearing arrangement and disposed at the ends of the bearing element and axially and radially outwardly of the bearing element. The gaps are defined between relatively rotatable parts of the bearing assembly. Each gap contains at least one sealing ring at a distance from the outer end of the gap. Lubricating means are provided in each shaft beside the sealing ring.Type: GrantFiled: June 13, 1984Date of Patent: May 13, 1986Inventor: Gunter Kupczik
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Patent number: 4568204Abstract: A shoe journal bearing having a series of shoes with a leading edge distribution groove, and bleed grooves so as to prevent oil starvation of any area of the shoe, and an oil feed tube connected between the outer end of the oil distribution groove and an oil supply hole in a shoe retaining ring. The oil feed tube is provided with O-ring seals to seal the oil supply system against leakage and directs the oil against the working faces of the shoes where it is needed and prevents the oil from leaking into areas where it is not needed or useful.Type: GrantFiled: September 4, 1984Date of Patent: February 4, 1986Assignee: Kingsbury, Inc.Inventor: William S. Chambers
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Patent number: 4501505Abstract: A thrust bearing for use with a shaft having a collar mounted thereon, comprising a base ring, a thrust bearing shoe having a leading edge connected to a trailing edge by an inner diameter edge and an outer diameter edge and having a working face with a bearing liner on its surface, a series of shoes positioned on the base ring, a shoe pivot on each shoe allowing the shoe to pivot in any direction, an oil distribution groove formed in the working face near the leading edge of the shoe and extending radially for substantially the entire distance between the inner and outer diameter edges of the shoe, said oil distribution groove having an inner end and an outer end connected by a leading edge and a trailing edge, and a bleed groove extending radially from the inner end of the oil distribution groove to the inner diameter edge of the shoe for supplying oil to the inner diameter area of the shoe downstream of the bleed groove which downstream inner diameter area would otherwise be starved by oil by the centrifugType: GrantFiled: June 6, 1984Date of Patent: February 26, 1985Inventor: William S. Chambers
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Patent number: 4488825Abstract: A bearing and seal assembly for use in an electric motor rotor or stator bore about a central shaft. The bearing and seal assembly comprises a drawn aluminum sleeve disposed in and secured to the wall of the bore and having opposite end portions projecting beyond the bore wall. A sleeve bearing is press fit in the sleeve with the sleeve press fit or adhesively secured in the bore. An annular seal is press fit in one projecting end portion of the sleeve and is thus held in precise coaxial relationship with the bearing. The opposite projecting end portion of the sleeve provides a seat for an O-ring at a diametrically enlarged portion thereof. A cap in snap engagement with the rotor or stator, or alternatively with the sleeve, engages the O-ring and closes a lubricant chamber surrounding the bearing and within the sleeve. The assembly method includes press fitting of the bearing and seal in the sleeve with the elements mounted on an assembly pin for precise concentricity or coaxial relationship.Type: GrantFiled: December 27, 1983Date of Patent: December 18, 1984Assignee: Clevepak CorporationInventors: Erman V. Cavagnero, George A. English, Charles R. Marracino
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Patent number: 4466629Abstract: An improved bicycle headset is disclosed having ball bearing races sealed by O-rings against contamination by dust, dirt, moisture and the like. This bicycle headset includes a lower assembly comprising a lower cup fitted to the lower end of a head tube, a crown cone upon which the shoulder of a front fork bears, a lower ball bearing race positioned between the lower cup and the crown cone, and a lower O-ring seal mounted on the crown cone to isolate the lower ball bearing race from the external environment. Also included, is an upper headset assembly comprising an upper stationary cone fitted to the upper end of the head tube and an upper cup threadedly attached to the upper end of a fork tube. A weatherproof lock nut is tightened down against the top portion of said upper cup so as to lock the position of the upper cup on the fork tube about a handlebar stem, and seal the upper part thereof.Type: GrantFiled: June 16, 1983Date of Patent: August 21, 1984Inventor: Michael W. Sinyard
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Patent number: 4460285Abstract: A bearing mounting member having a first portion adapted to engage and hold a bearing housing, and a second portion in the form of a flange for engaging and being secured to a cooperating support surface, and including an annular groove formed in such second portion for enhancing the strength of such flange and concomitants facilitating the formation of a seal to such support surface.Type: GrantFiled: October 18, 1982Date of Patent: July 17, 1984Assignee: Development Engineering and AssociatesInventor: John F. O'Donnell
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Patent number: 4391474Abstract: A seal for a thrust shaft in a body wherein the body has a bore and a counterbore, the bottom of the counterbore providing a shoulder for the thrust force of the shaft. The seal includes a bearing sleeve which is slidably mounted on the shaft, the bearing sleeve having a static O-ring which seals the interior of the sleeve to the shaft and a flange which extends into the counterbore. Provision is made for radially fixing the bearing sleeve to the shaft. A ring-shaped seal housing is mounted about the shaft below the bearing sleeve and extends into the counterbore, the seal housing having an interior dynamic O-ring sealing the housing to the shaft and an exterior static O-ring which seals the housing to the counterbore.Type: GrantFiled: February 26, 1981Date of Patent: July 5, 1983Inventor: Leonard J. Martini