O-rings Patents (Class 384/152)
  • Patent number: 11085491
    Abstract: 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: Grant
    Filed: June 8, 2020
    Date of Patent: August 10, 2021
    Inventor: Robert Janian
  • Patent number: 9618048
    Abstract: 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: Grant
    Filed: August 12, 2014
    Date of Patent: April 11, 2017
    Assignee: Lufkin Industries, LLC
    Inventors: John C. Nicholas, Thomas P. Shoup, Adam Fiegl, Don H. Rockefeller, Josh Ronan
  • Patent number: 9097260
    Abstract: 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: Grant
    Filed: May 15, 2012
    Date of Patent: August 4, 2015
    Assignee: Asia Vital Components Co., Ltd.
    Inventors: Chu-Hsien Chou, Shao-Jun Hong
  • Patent number: 8870459
    Abstract: 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: Grant
    Filed: June 26, 2013
    Date of Patent: October 28, 2014
    Assignee: CADventures, Inc.
    Inventor: Thomas J. Danowski
  • Patent number: 8814432
    Abstract: 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: Grant
    Filed: March 13, 2013
    Date of Patent: August 26, 2014
    Assignee: Seal-Ryt Corporation
    Inventors: Lynne A. Thoma, Mark R. Wilkinson
  • Publication number: 20140169709
    Abstract: 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: Application
    Filed: December 17, 2013
    Publication date: June 19, 2014
    Applicant: Ride the Ducks International, LLC
    Inventors: Brian Deckard, Frank English
  • Patent number: 8641285
    Abstract: 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: Grant
    Filed: October 7, 2011
    Date of Patent: February 4, 2014
    Assignee: Robert Bosch GmbH
    Inventor: Uwe Roessler
  • Publication number: 20140003748
    Abstract: 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: Application
    Filed: June 26, 2013
    Publication date: January 2, 2014
    Applicant: CADVENTURES, INC.
    Inventor: Thomas J. Danowski
  • Patent number: 8231275
    Abstract: 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: Grant
    Filed: July 25, 2008
    Date of Patent: July 31, 2012
    Assignee: Aktiebolaget SKF
    Inventors: Thomas Krause, Burkard Beck, Peter Schmehr
  • Patent number: 8038351
    Abstract: 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: Grant
    Filed: March 27, 2008
    Date of Patent: October 18, 2011
    Assignee: Roller Bearing Company of America, Inc.
    Inventors: Robert Arnold, Phillip Beausoleil
  • Patent number: 7461977
    Abstract: 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: Grant
    Filed: September 3, 2004
    Date of Patent: December 9, 2008
    Assignee: Exmark Manufacturing Company, Incorporated
    Inventors: Benjamin P. Davis, Garry W. Busboom
  • Patent number: 7278840
    Abstract: 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: Grant
    Filed: June 28, 2004
    Date of Patent: October 9, 2007
    Assignee: Parker-Hannifin Corporation
    Inventor: Robert E. Oehman, Jr.
  • Patent number: 6558630
    Abstract: A device and method of continuous introduction of liquid solution samples into a system from a chamber containing the solution.
    Type: Grant
    Filed: June 14, 2000
    Date of Patent: May 6, 2003
    Inventors: Hans Degn, Henrik Ørsnes, Thomas Graf
  • Patent number: 6132096
    Abstract: 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: Grant
    Filed: December 18, 1998
    Date of Patent: October 17, 2000
    Assignee: Glyco-Metal-Werke Glyco B.V. & Co. KG
    Inventors: Philippe Damour, Klaus Kirchhof
  • Patent number: 5964325
    Abstract: 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: Grant
    Filed: October 10, 1997
    Date of Patent: October 12, 1999
    Assignee: Dana Corporation
    Inventors: Kent Eugene Davison, Martin G. Blessing
  • Patent number: 5938343
    Abstract: 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: Grant
    Filed: November 3, 1997
    Date of Patent: August 17, 1999
    Assignee: Seagate Technology, Inc.
    Inventors: Alan L. Grantz, Klaus Kloeppel, John Dunfield
  • Patent number: 5860746
    Abstract: 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: Grant
    Filed: July 16, 1997
    Date of Patent: January 19, 1999
    Assignee: SMS Schloemann-Siemag Aktiengesellschaft
    Inventors: Konrad Roeingh, Matthias Tuschhoff, Karl-Friedrich Muller
  • Patent number: 5547288
    Abstract: 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: Grant
    Filed: February 24, 1995
    Date of Patent: August 20, 1996
    Assignee: Euclid Industries, Inc.
    Inventors: Paul R. Quinn, Richard R. Kempski, Douglas J. King
  • Patent number: 5490021
    Abstract: 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: Grant
    Filed: April 5, 1994
    Date of Patent: February 6, 1996
    Assignee: U.S. Philips Corporation
    Inventors: Johannes C. A. Muller, Robert C. H. Boereboom, Jelm Franse
  • Patent number: 5460454
    Abstract: 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: Grant
    Filed: July 20, 1994
    Date of Patent: October 24, 1995
    Assignee: Valeo Systemes d'Essuyage
    Inventor: Pascal Renoux
  • Patent number: 5312116
    Abstract: 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: Grant
    Filed: June 21, 1991
    Date of Patent: May 17, 1994
    Assignee: Lawrence D. Quaglia
    Inventor: Lawrence D. Quaglia
  • Patent number: 5281034
    Abstract: 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: Grant
    Filed: June 16, 1992
    Date of Patent: January 25, 1994
    Assignee: H & K Antriebstechnik GmbH
    Inventor: Walter J. Hertlein
  • Patent number: 4869601
    Abstract: 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: Grant
    Filed: July 11, 1988
    Date of Patent: September 26, 1989
    Assignee: T&N Technology Limited
    Inventor: Peter A. J. Scott
  • Patent number: 4863290
    Abstract: 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 pl
    Type: Grant
    Filed: April 21, 1988
    Date of Patent: September 5, 1989
    Assignee: Outboard Marine Corporation
    Inventors: Steven R. McNeill, Scott N. Burmeister, Matthew H. Mondek, Roger B. Whipple
  • Patent number: 4768889
    Abstract: 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: Grant
    Filed: December 19, 1986
    Date of Patent: September 6, 1988
    Assignee: SKF GmbH
    Inventors: Norbert Loser, Peter Schmehr, Leopold Tilgner
  • Patent number: 4764035
    Abstract: 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 bet
    Type: Grant
    Filed: November 6, 1987
    Date of Patent: August 16, 1988
    Assignee: Quadion Corporation
    Inventor: Richard M. Boyd
  • Patent number: 4718779
    Abstract: 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: Grant
    Filed: September 2, 1986
    Date of Patent: January 12, 1988
    Assignee: O & S Manufacturing Company
    Inventor: William H. Trudeau
  • Patent number: 4671430
    Abstract: 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: Grant
    Filed: May 20, 1985
    Date of Patent: June 9, 1987
    Assignee: Eli Lilly and Company
    Inventor: Harold B. Dinius
  • Patent number: 4659240
    Abstract: 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: Grant
    Filed: July 14, 1986
    Date of Patent: April 21, 1987
    Inventor: Thomas E. Rogus
  • Patent number: 4619534
    Abstract: 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: Grant
    Filed: September 12, 1984
    Date of Patent: October 28, 1986
    Assignee: Reed Tool Company
    Inventors: Jeffery E. Daly, Robert J. Kotch
  • Patent number: 4588310
    Abstract: 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: Grant
    Filed: June 13, 1984
    Date of Patent: May 13, 1986
    Inventor: Gunter Kupczik
  • Patent number: 4568204
    Abstract: 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: Grant
    Filed: September 4, 1984
    Date of Patent: February 4, 1986
    Assignee: Kingsbury, Inc.
    Inventor: William S. Chambers
  • Patent number: 4501505
    Abstract: 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 centrifug
    Type: Grant
    Filed: June 6, 1984
    Date of Patent: February 26, 1985
    Inventor: William S. Chambers
  • Patent number: 4488825
    Abstract: 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: Grant
    Filed: December 27, 1983
    Date of Patent: December 18, 1984
    Assignee: Clevepak Corporation
    Inventors: Erman V. Cavagnero, George A. English, Charles R. Marracino
  • Patent number: 4466629
    Abstract: 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: Grant
    Filed: June 16, 1983
    Date of Patent: August 21, 1984
    Inventor: Michael W. Sinyard
  • Patent number: 4460285
    Abstract: 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: Grant
    Filed: October 18, 1982
    Date of Patent: July 17, 1984
    Assignee: Development Engineering and Associates
    Inventor: John F. O'Donnell
  • Patent number: 4391474
    Abstract: 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: Grant
    Filed: February 26, 1981
    Date of Patent: July 5, 1983
    Inventor: Leonard J. Martini