Thrust Bearing Patents (Class 384/420)
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Publication number: 20080212909Abstract: A bearing mount of a rotatable printer drum having a rotational axis includes a main drum bearing, rotationally supporting the drum and having an outer bearing race, and at least two secondary roller bearings, angularly spaced from each other. The secondary roller bearings are positioned to rollably support the outer bearing race and allow lateral translation of the main bearing.Type: ApplicationFiled: March 1, 2007Publication date: September 4, 2008Inventors: Robert M. Yraceburu, Steven P. Downing, Stuart D. Spencer
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Patent number: 7407329Abstract: A sliding bearing (1) includes an upper casing (3) which is made of polyacetal resin as a synthetic resin, has an annular surface (2), and serves as a first bearing body; a second bearing body (5) which is made of a synthetic resin, is superposed on the upper casing (3) so as to be rotatable about an axis (O), and has an synthetic resin-made annular surface (4) opposed to the annular surface (2); and a synthetic resin-made annular sheet (6) which is interposed between the annular surfaces (2) and (4) and slidably abuts against at least one of the upper casing (3) and the bearing body (5).Type: GrantFiled: June 7, 2007Date of Patent: August 5, 2008Assignee: Oiles CorporationInventors: Tadashi Watai, Kazuyuki Miyata, Ryohei Kaneko
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Patent number: 7401980Abstract: A thrust bearing, in particular for a turbo charger, has an essentially disc shaped bearing body (10) with a central through opening (12) for a shaft, at least one bearing surface (14) surrounding the through opening (12) for a collar which is placed on the shaft, and at least one oil supply channel which leads from a radially outer region of the bearing body to the through opening (12). In order to realize a cost effective manufacture of the thrust bearing it is proposed according to the invention that the at least one oil supply channel is designed to be a groove (16?).Type: GrantFiled: July 25, 2005Date of Patent: July 22, 2008Assignee: BorgWarner Inc.Inventors: Paul Krauss, Thomas Weinitschke, Helmut Eggert, Klaus Schappert, Norbert Stoll
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Patent number: 7399253Abstract: A washer and a planetary gear set having the same, wherein the washer includes a first washer member and a second washer member. The first washer member is formed at a surface thereof with a plurality of first stepped portions each having a radially extending concave structure. The second washer member has a plurality of second stepped portions each having a radially extending convex structure facing the first washer member. As the second stepped portions are inserted into the first stepped portions, respectively, a plurality of oil flow holes are defined between the first stepped portions and the second stepped portions, thereby allowing lubricating oil to pass through the washer in a radial direction. With this configuration, the washer ensures the smooth supply of lubricating oil regardless of the rotating direction of a pinion gear.Type: GrantFiled: January 17, 2006Date of Patent: July 15, 2008Assignee: Hyundai Motor CompanyInventor: Jim Ho Kim
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Patent number: 7357578Abstract: A thrust sliding bearing includes an upper casing having a polyacetal resin-made flat annular surface and a lower casing superposed on the upper casing so as to be rotatable about an axis of the upper casing and having a polyacetal resin-made annular surface opposing the annular surface of the upper casing.Type: GrantFiled: January 12, 2007Date of Patent: April 15, 2008Assignee: Oiles CorporationInventors: Tadashi Watai, Kazuyuki Miyata, Atsushi Ueno, Ryohei Kaneko
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Patent number: 7293918Abstract: A sliding bearing (1) includes an upper casing (3) which is made of polyacetal resin as a synthetic resin, has an annular surface (2), and serves as a first bearing body; a second bearing body (5) which is made of a synthetic resin, is superposed on the upper casing (3) so as to be rotatable about an axis (O), and has an synthetic resin-made annular surface (4) opposed to the annular surface (2); and a synthetic resin-made annular sheet (6) which is interposed between the annular surfaces (2) and (4) and slidably abuts against at least one of the upper casing (3) and the bearing body (5).Type: GrantFiled: January 20, 2003Date of Patent: November 13, 2007Assignee: Oiles CorporationInventors: Tadashi Watai, Kazuyuki Miyata, Ryohei Kaneko
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Patent number: 7273317Abstract: A thrust sliding bearing (1) includes an upper casing (3) having an annular surface (2); an annular lower casing (5) which is superposed on the upper casing (3) so as to be rotatable about an axis (0) of the upper casing (3) and has an annular surface (4) opposed to the annular surface (2) of the upper casing (3); and an annular thrust sliding bearing piece (6) and an elastic ring (7) which are superposed on top of each other and are interposed between the annular surfaces (2) and (4).Type: GrantFiled: February 5, 2004Date of Patent: September 25, 2007Assignee: Oiles CorporationInventors: Kazuyuki Miyata, Ryohei Kaneko
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Patent number: 7271135Abstract: A rolling bearing, for application in electric auxiliaries for a car, durable owing to high resistance to high temperatures and capable of restraining noises from being generated at low temperatures; and lubricant grease, for low and high temperature application, which can be sealed in the rolling bearing. The lubricant grease includes 100 parts by weight of a mixture of fluorine-containing lubricant grease containing perfluoropolyether oil as a base oil thereof and fluorocarbon resin powder as a thickening agent thereof and urea-containing lubricant grease containing polyester oil as a base oil thereof and a urea compound as a thickening agent thereof; and 3 to 30 parts by weight of polyolefin oil added to the mixed grease. The polyolefin oil has a pour point of not more than ?50° C. and a kinematic viscosity of 10 to 70 mm2/s at 40° C.Type: GrantFiled: April 8, 2004Date of Patent: September 18, 2007Assignee: NTN CorporationInventors: Mitsunari Asao, Masaki Egami
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Patent number: 7198406Abstract: A thrust sliding bearing includes an upper casing having a polyacetal resin-made flat annular surface and a lower casing superposed on the upper casing so as to be rotatable about an axis of the upper casing and having a polyacetal resin-made annular surface opposing the annular surface of the upper casing.Type: GrantFiled: January 20, 2003Date of Patent: April 3, 2007Assignee: Oiles CorporationInventors: Tadashi Watai, Kazuyuki Miyata, Atsushi Ueno, Ryohei Kaneko
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Patent number: 7189004Abstract: The motor has a thrust cap fitted to its end cap by snap fit fingers. The thrust cap closes a hole in the bearing retainer of the end cap and provides a thrust bearing surface against which the end of the shaft contacts to limit axial movement or end play of the shaft. The thrust bearing surface is part of a metallic spring fixed to a body of the thrust cap.Type: GrantFiled: January 15, 2004Date of Patent: March 13, 2007Assignee: Johnson Electric S.A.Inventor: James Ching Sik Lau
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Patent number: 7147380Abstract: A locking ring assembly retains a bearing to a shaft rotatably supported on a first axis of rotation. Guide pins or rods extend axially from an annularly shaped bearing retainer slideably disposed on the shaft towards the pressure ring, also slideably disposed on the shaft. The heads of the guide pins are slideably disposed and captured in adjusting apertures of the pressure ring. A multi part pressure screw assembly are provided in the adjusting apertures of the pressure ring. Such pressure screws translate axially in the apertures of the pressure ring when rotated, with the thrust pads engaging the heads of the guide pins to displace the pressure ring from the bearing retainer. The pressure ring reacts against a reactive element or ring disposed on the shaft opposite the bearing retainer to develop an axial pressure load against the bearing.Type: GrantFiled: October 9, 2003Date of Patent: December 12, 2006Assignee: The Timken CompanyInventor: Edward P. Bianco
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Patent number: 7140780Abstract: A bearing assembly includes a sleeve bearing (2) having a mating portion (22) and a center bore (20), a shaft (1) disposed in the center bore, and a rotary block (3) mounted on the shaft and being rotatable therewith. A gap exists between the inner circumferential surface of the bearing and the outer circumferential surface of the shaft to allow the shaft to be capable of rotate in the bore without scrapping the bearing. The rotary block includes a mounting portion (30) engaging with the mating portion of the bearing, whereby the rotary block is rotatably supported on the bearing.Type: GrantFiled: August 31, 2004Date of Patent: November 28, 2006Assignee: Hon Hai Precision Industry Co., Ltd.Inventors: Chin-Long Ku, Chin-Wen Yeh, Chih-Hao Yang
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Patent number: 6929402Abstract: An apparatus for rotatably mounting and axially fixing a gear on a shaft comprises a bushing fixed within a bore of the gear. A sleeve is received on and fixed relative to the shaft. The sleeve is surrounded by and journalled for rotation within the bushing. A thrust ring is fixed relative to and projects radially from the shaft on one side of the gear. A retainer on the one side of the gear defines a circular channel within which the annular thrust ring is axially confined.Type: GrantFiled: March 17, 2003Date of Patent: August 16, 2005Assignee: Morgan Construction CompanyInventor: David G. Titus
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Patent number: 6918701Abstract: A synthetic resin-made sliding bearing (1) includes a synthetic resin-made lower casing (2), a synthetic resin-made upper casing (3) superposed on the lower casing (2), a synthetic resin-made disk-shaped thrust sliding bearing piece (4) disposed between the upper and the lower casings (3) and (2), and a synthetic resin-made cylindrical radial sliding bearing piece (5) disposed between the upper and the lower casings (3) and (2).Type: GrantFiled: February 25, 2002Date of Patent: July 19, 2005Assignee: Oiles CorporationInventors: Atsushi Ueno, Kazuyuki Miyata
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Patent number: 6899517Abstract: A method of installing an annular bearing element within a centrifugal pump utilizes a mechanical staking operation. The bearing element locates within a receptacle of a pump stage that is surrounded by a retaining wall. Once the bearing element is located within the retaining wall, the retaining wall is permanently deformed at various points against the bearing element. The bearing element, if of a hard wear resistant metal, may have flats for the circumferentially spaced apart deformations to locate within. The bearing element may be a thrust washer for transmitting downward thrust, or it may be a radial support bearing sleeve.Type: GrantFiled: November 8, 2002Date of Patent: May 31, 2005Assignee: Baker Hughes IncorporatedInventors: Farral D. Gay, Terry W. Shafer, B. Lyle Wilson
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Publication number: 20040240761Abstract: A thrust sliding bearing (1) includes an upper casing (10) having a polyacetal resin-made flat annular surface (2) and a lower casing (20) superposed on the upper casing (10) so as to be rotatable about an axis (O) of the upper casing (10) and having a polyacetal resin-made annular surface (3) opposing the annular surface (2) of the upper casing (10).Type: ApplicationFiled: June 25, 2004Publication date: December 2, 2004Inventors: Tadashi Watai, Kazuyuki Miyata, Atsushi Ueno, Ryohei Kaneko
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Publication number: 20040240760Abstract: A thrust bearing and method of assembling a thrust bearing, the bearing comprising: an outer housing having a substantially circular base, wherein a cylindrical side wall and a central post are upstanding from the base; an outer ball seated on and at least partially within the outer housing; and an inner ball mounted on the central post, wherein the outer ball is sandwiched between the inner ball and the outer housing.Type: ApplicationFiled: June 21, 2004Publication date: December 2, 2004Inventors: Stephen Alan Peet, Paul Raymond Smith, Tobias Martin Huelsen
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Patent number: 6814493Abstract: In a plain bearing for the transmission of high axial forces and great flexural moments with slight relative movements the one co-operating bearing component has an annular rib which engages into an annular groove provided on the other co-operating bearing component. The annular rib which can be of an outwardly convergent trapezoidal cross-section is provided with anti-friction linings on its free side faces and possibly peripheral faces. The anti-friction linings, like the co-operating bearing component in question, in particular an outer ring carrying the annular rib, can be subdivided segment-like. The segments can then be released individually from their composite assembly and maintained, in particular provided with new anti-friction linings. A preferred use of this plain bearing is the arrangement thereof between a pylon-supported machine head and the pylon head of a wind power installation.Type: GrantFiled: September 19, 2002Date of Patent: November 9, 2004Inventor: Aloys Wobben
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Patent number: 6799891Abstract: According to the present invention, a cylindrical side wall is provided in a housing so as to surround an outer periphery of a stopper member. Further, an end surface of the side wall is higher than a top surface of outermost periphery of the stopper member. Oil otherwise scattered is received by the side wall for collection. Oil is thus prevented from scattering even if during manufacturing, the amount of oil dripped between the shaft and the oil-impregnated bearing is not strictly controlled, so that a slightly excessive amount of oil is dripped. Therefore, the present motor device enables manufacturing operations to be favorably performed, and is reliable having a long lifetime.Type: GrantFiled: February 21, 2003Date of Patent: October 5, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kisaburo Kurobe, Masashi Omura, Eisaku Sakoda
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Publication number: 20040190804Abstract: A thrust bearing comprises at least one diamond bearing segment, wherein the segment has a front surface and a back surface. A plurality of bearing pads extend a predetermined distance from the front surface, each of the plurality of bearing pads has a load surface substantially parallel to the front surface. The plurality of bearing pads act cooperatively to provide a load bearing surface area. The bearing pads are shaped and arranged in a predetermined pattern to enhance the load carrying surface area, and the predetermined pattern creates a plurality of flow micro-channels between the bearing pads. In another aspect, a thrust bearing comprises a diamond bearing surface, and a predetermined pattern of cavities formed in the diamond bearing surface for providing a fluid reservoir for lubricating and cooling the load surface.Type: ApplicationFiled: March 26, 2003Publication date: September 30, 2004Applicant: Baker Hughes IncorporatedInventors: Hendrik John, Andreas Krafczyk
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Patent number: 6789992Abstract: A washer in accordance with the present invention comprises an axial hole and a plurality of oil-bearing portions. The oil-bearing portions are located on an inner surface opposite to an outer surface and surround the axial hole.Type: GrantFiled: September 20, 2002Date of Patent: September 14, 2004Assignee: Sunonwealth Electric Machine Industry Co., Ltd.Inventors: Alex Horng, Yin-Rong Hong, Ching-Sheng Hong
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Publication number: 20040146230Abstract: The motor has a thrust cap fitted to its end cap by snap fit fingers. The thrust cap closes a hole in the bearing retainer of the end cap and provides a thrust bearing surface against which the end of the shaft contacts to limit axial movement or end play of the shaft. The thrust bearing surface is part of a metallic spring fixed to a body of the thrust cap.Type: ApplicationFiled: January 15, 2004Publication date: July 29, 2004Applicant: Johnson Electric S.A.Inventor: James Ching Sik Lau
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Publication number: 20040120619Abstract: This invention is an independent rotary supportive pad with the use of the “Flat Bearing” ring plate. The “pad” is constructed by having the “Flat Bearing” ring plate to be place between bi-planar surface. When the “pad” that is directly underneath heavy object such as television, computer monitor, stereo speaker, laptop computer or dining dishes. The pad replaces function of a television turntable or rotary table that acts, not only as a cushion between the planar surfaces of the base of the television to the planar surface of table or desk, but also allows revolving motion to take place with minimum increase in vertical height. In theory, the rotational supportive pad with “Flat Bearing” ring plate construction do not have a limit in width as long as the construction of the bearing plate follows the alternating rotational direction in each of the rings.Type: ApplicationFiled: December 18, 2002Publication date: June 24, 2004Inventor: Dong-Yeh Chai
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Patent number: 6729767Abstract: To improve the known step bearings for the support of open-end spinning rotors, it is proposed to design the bearing body with a machine-side support and a rest for the spinning rotor. According to the invention, a flat bearing surface constituting one end of the bearing body is provided as the rest for the spinning rotor. The flat bearing surface is preferably designed as a bearing plate of an aerostatic step bearing capable of being subjected to compressed air.Type: GrantFiled: August 30, 2002Date of Patent: May 4, 2004Assignee: Rieter Ingolstadt Spinnereimaschinenbau AGInventors: Edmund Schuller, Manfred Knabel
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Patent number: 6698933Abstract: The motor has a thrust cap (50) fitted to its end cap by snap fit fingers (54). The thrust cap (50) closes a hole (46) in the bearing retainer (42) of the end cap and provides a thrust bearing surface (52) against which the end of the shaft contacts to limit axial movement or end play of the shaft.Type: GrantFiled: May 28, 2002Date of Patent: March 2, 2004Assignee: Johnson Electric, S.A.Inventor: James Ching Sik Lau
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Publication number: 20040017955Abstract: A cutter body with a beater having a bearing body, which is penetrated by a bearing bore, wherein a beater head adjoins the bearing body via a connecting section, and the bearing body has lateral faces which receive the bore openings and are arranged on a side, transversely with respect to the bearing axis of the bearing bore. For increasing the operational dependability, at least one of the lateral faces is formed as segments.Type: ApplicationFiled: April 10, 2003Publication date: January 29, 2004Inventors: Willi Schillinger, Robert Oehler, Karl Kammerer
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Publication number: 20030210839Abstract: A rotary thrust bearing assembly wherein, in lieu of a conventional bearing race and ball bearing assembly, a first embodiment of the bearing assembly of the present invention comprises a pair of bearing housings which are fabricated from dissimilar plastic materials such that the bearing housings are adapted to undergo limited pivotal or rotational movement with respect to each other along rotary planar surfaces. In accordance with a second embodiment of the bearing assembly of the present invention, the pair of plastic bearing housings are fabricated from similar plastic materials while an insert, fabricated from a plastic material dissimilar from the plastic material comprising the pair of plastic bearing housings, is interposed between the pair of plastic bearing housings. In this manner, the pair of plastic bearing housings are rotatable with respect to each other along two parallel rotary planar surfaces.Type: ApplicationFiled: May 10, 2002Publication date: November 13, 2003Inventors: Anatoly Gosis, Jacques Dhelens, James P. Nelson
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Publication number: 20030185475Abstract: There is provided a double-sided sliding thrust bearing of a plate shape adapted to be in sliding contact with a counterpart on each of both faces of the thrust bearing, comprising a bearing structure provided with a plate-shaped base member having an anchor effect on each of both faces thereof, and a sliding layer having a thickness not less than 30 &mgr;m on each of the faces of said base member which sliding layer is made of a thermosetting resin-containing material. By making the thickness of the sliding layer 10 not less than 30 &mgr;m, it becomes possible for the thrust bearing 1 to slide shoes for a longer time even when being used in a dry state and the sliding layer 10 comes to be hardly peeled off from the base member 2 because of the anchor effect of the base member 2. Further, the mechanical strength and thermal conductivity of the thrust bearing 1 can be improved by the base member 2 located between the sliding layers 10.Type: ApplicationFiled: February 18, 2003Publication date: October 2, 2003Inventors: Hideki Iwata, Takahiro Niwa, Takeshi Shindo, Kotaro Kashiyama
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Patent number: 6601992Abstract: An annular thrust bearing is composed of an annular backing plate made of steel and an annular bearing layer joined to one side of the backing plate during a sintering operation. The bearing layer is made of an alloy composed of copper, tin and silver. The bearing layer is roll-formed in a spiral fashion after the sintering operation.Type: GrantFiled: December 13, 2001Date of Patent: August 5, 2003Assignee: Senju Metal Industry Co., Ltd.Inventors: Hisatosi Tabuti, Akio Hinata, Yutaka Miyata
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Patent number: 6592490Abstract: A hydraulic washer or spacer is used to reduce friction between a planet gear and the planet carrier. The washer has a top side and a bottom side, an inner diameter and an outer diameter. A mating profile extends from the inner diameter to the outer diameter along the bottom side adjacent the planet gear. The top side has a pumping land, pressure pocket, and bearing surface arranged from the inner diameter to the outer diameter respectively. The pumping land extends from the inner diameter outward radially to the pressure pocket. The pressure pocket is recessed relative to the pumping land and extends from the pumping land outward radially to a containment edge. The containment edge is raised relative to the pressure pocket and pumping land. Extending from the containment edge to the outer diameter is a bearing surface that is also raised relative to the pressure pocket and pumping land. As the washer rotates, the surrounding fluid is subject to centrifugal forces.Type: GrantFiled: May 2, 2001Date of Patent: July 15, 2003Assignee: Baker Hughes IncorporatedInventor: David L. Olson
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Publication number: 20030072507Abstract: Disclosed is a self-lubricating thrust bearing having a number of axially-aligned parts. The bearing is preferably in cartridge form and includes an internal circular spring. The spring is located between two adjacent disks and functions to force the disks apart when the bearing loading is below a predetermined amount. In this manner, when the bearing loading is low, the spring applies pressure to the bearing's components and any attached structure. When the bearing loading exceeds a predetermined amount, the spring becomes compressed sufficiently to enable direct contact between the disks while not interfering with the rotational movement of any part of the bearing. The spring can be made of any resilient material, such as spring steel or an elastomer.Type: ApplicationFiled: November 22, 2002Publication date: April 17, 2003Inventor: Warren C. Reynolds
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Publication number: 20030068107Abstract: To improve the known step bearings for the support of open-end spinning rotors it is proposed to design the bearing body with a machine-side support and a rest for the spinning rotor. According to the invention, an even bearing surface (2) constituting one end of the bearing body (11) is provided as the rest for the spinning rotor. The even bearing surface (2) is preferably designed as a bearing plate 23 of an aerostatic step bearing (1) capable of being subjected to compressed air.Type: ApplicationFiled: August 30, 2002Publication date: April 10, 2003Inventors: Edmund Schuller, Manfred Knabel
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Patent number: 6533461Abstract: A thrust washer formed from metal sheet has a flat, ring-shaped thrust portion oriented radially, and at least one tab extending from an outer or inner perimeter of the thrust portion. The tab includes a radially oriented mid-portion and at least one wing-portion extending perpendicular to the mid-portion and parallel to the axis of the thrust portion such that a flat surface of the wing-portion can engage a recess of a backup member to prevent rotation of the thrust washer relative to the backup member. The tab is not symmetrical about a line along a diameter of the thrust portion.Type: GrantFiled: August 14, 2001Date of Patent: March 18, 2003Assignee: The Torrington CompanyInventor: Russell B. Gottlieb
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Publication number: 20030035603Abstract: The present invention relates to a thrust bushing formed in such a way as to maximize its lubrication during use to minimize its wear. Broadly, at least one surface of the bushing is formed with grooves that extend between its central aperture and its outer diameter to allow the free flow of lubricant between the two and thus lubricate the entire bushing surface of the thrust bushing as it rotates during steering. The grooves may take a variety of forms such as radially extending rectangular grooves or spiral grooves to better spread lubricant over the entire bushing surface. The bushings may be imposed directly between the axle and the lower yoke or may be packaged in a cartridge between a pair of discs to provide a self-contained, well-lubricated package.Type: ApplicationFiled: August 15, 2002Publication date: February 20, 2003Applicant: V.W. Kaiser Engineering, Inc.Inventor: Terrence S. Kaiser
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Patent number: 6511226Abstract: An aluminum thrust washer that has a wrought aluminum matrix that includes from 2 to 20 weight percent silicon, 0.1 to 4 weight percent of copper, with the remainder pure aluminum. The aluminum thrust washer is formed of a mono-metal structure without a backing layer. The wrought aluminum matrix has mechanical properties such that the aluminum matrix wears away, leaving silicon particles exposed at a thrust face of the washer, such that the density of silicon particles is continually increasing as the thrust washer is utilized.Type: GrantFiled: September 4, 2001Date of Patent: January 28, 2003Assignee: Federal-Mogul World Wide, Inc.Inventors: Ronald Joseph Thompson, Warren J. Whitney
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Patent number: 6502994Abstract: A two component thrust washer assembly for a vehicle torque converter has a first component made of a durable polyimide material with an annular wear face and three axially projecting pins. The second component is made of metal and has a mating portion with three openings to receive the pins and an area to engage an adjacent element of a torque converter.Type: GrantFiled: May 17, 2001Date of Patent: January 7, 2003Assignee: Sonnax Industries, Inc.Inventor: Scott C. Jackson
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Patent number: 6467968Abstract: An apparatus for a clarifier including a central pier terminating in a base plate having a circumferential edge and a ring gear rotatable about the central pier and coupled to a rake structure, the apparatus including a plurality of support bearings and a retaining ring structure. A lower surface of each support bearing seated on and supported by a portion of the base plate and a portion of an upper surface of each support bearing for support of a portion of the bottom of the ring gear, the support bearings placed substantially end-to-end to form a circular bearing extending towards the circumferential edge of the base plate.Type: GrantFiled: April 23, 2001Date of Patent: October 22, 2002Inventor: Richard Nils Young
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Publication number: 20020141672Abstract: The motor has a thrust cap (50) fitted to its end cap by snap fit fingers (54). The thrust cap (50) closes a hole (46) in the bearing retainer (42) of the end cap and provides a thrust bearing surface (52) against which the end of the shaft contacts to limit axial movement or end play of the shaft.Type: ApplicationFiled: May 28, 2002Publication date: October 3, 2002Applicant: Johnson Electric S.A.Inventor: James Ching Sik Lau
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Publication number: 20020112933Abstract: An end bearing, a one-way clutch device and a method of manufacturing the end bearing, capable of preventing abrasion or scorching of the end bearing while improving the productivity. The annular end bearing which is interposed between an inner race and an outer race of the one-way clutch device and is in a slidable contact with the inner race or the outer race when it is operated, wherein a recess having the depth of 5 to 30 &mgr;m is formed on a slidable contact surface with inner race or the outer race. The method comprises a blanking step of blanking an annular blank from a metal plate, a recess forming step of forming a recess in a predetermined portion of said blank, and a drawing step of forming a flange on said blank by drawing, wherein the above recess forming step is executed before or after the blanking step, or at the same time with the blanking step.Type: ApplicationFiled: February 14, 2002Publication date: August 22, 2002Applicant: NSK-Warner K.K.Inventors: Norihiro Yamamoto, Hirofumi Ogata
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Publication number: 20020094144Abstract: Disclosed is a self-lubricating thrust bearing having a number of axially-aligned parts. The bearing is preferably in cartridge form and includes an internal circular spring. The spring is located between two adjacent disks and functions to force the disks apart when the bearing loading is below a predetermined amount. In this manner, when the bearing loading is low, the spring applies pressure to the bearing's components and any attached structure. When the bearing loading exceeds a predetermined amount, the spring becomes compressed sufficiently to enable direct contact between the disks while not interfering with the rotational movement of any part of the bearing.Type: ApplicationFiled: January 17, 2001Publication date: July 18, 2002Inventor: Warren C. Reynolds
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Publication number: 20020071619Abstract: An annular thrust bearing is composed of an annular backing plate made of steel and an annular bearing layer joined to one side of the backing plate during a sintering operation. The bearing layer is made of an alloy composed of copper, tin and silver. The bearing layer is roll-formed in a spiral fashion after the sintering operation.Type: ApplicationFiled: December 13, 2001Publication date: June 13, 2002Inventors: Hisatosi Tabuti, Akio Hinata, Yutaka Miyata
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Publication number: 20020034349Abstract: An aluminum thrust washer that has a wrought aluminum matrix that includes from 2 to 20 weight percent silicon, 0.1 to 4 weight percent of copper, with the remainder pure aluminum. The aluminum thrust washer is formed of a mono-metal structure without a backing layer. The wrought aluminum matrix has mechanical properties such that the aluminum matrix wears away, leaving silicon particles exposed at a thrust face of the washer, such that the density of silicon particles is continually increasing as the thrust washer is utilized.Type: ApplicationFiled: September 4, 2001Publication date: March 21, 2002Applicant: Federal-Mogul World Wide, Inc.Inventor: Ronald Joseph Thompson
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Patent number: 6312160Abstract: A bearing construction for a drive shaft in which a spindle is disposed internally of an axle bearing of a wheel. An outer joint of the drive shaft is disposed internally of the spindle, and drive force from an engine is transmitted to the wheel through the outer joint. A bearing diametrally supporting the outer joint is provided between the spindle and the outer joint, and a washer is axially press-fitted on the outer joint axially between the spindle and a part of the outer joint.Type: GrantFiled: September 23, 1999Date of Patent: November 6, 2001Assignee: Suzuki Motor CorporationInventor: Takafumi Sugiyama
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Publication number: 20010033704Abstract: A two component thrust washer assembly for a vehicle torque converter has a first component made of a durable polyimide material with an annular wear face and three axially projecting pins. The second component is made of metal and has a mating portion with three openings to receive the pins and an area to engage an adjacent element of a torque converter.Type: ApplicationFiled: May 17, 2001Publication date: October 25, 2001Inventor: Scott C. Jackson
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Patent number: 6276834Abstract: The present invention relates to a semicircular or circular axial bearing element, especially a thrust washer or flanged bearing shell or flanged bearing bushing, with valleys on the side facing the sliding partner to form radial oil outlet openings; in order to increase the load carrying capacity, the axial bearing element is formed such that 5 to 8 valleys are provided over an angle of 180 degrees in the circumferential direction, such that rounded peaks points are provided between each 2 recesses, and such that the profile has a depth between peaks and valleys of 0.05 to 0.2 mm.Type: GrantFiled: June 8, 1999Date of Patent: August 21, 2001Assignee: KS Gleitlager GmbHInventor: Clifford Byard
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Patent number: 6273685Abstract: A radial piston pump for generating high-fuel pressure in fuel injection systems of internal combustion engines, in particular in a common rail injection system, having a drive shaft which is supported in a pump housing and has an eccentrically embodied shaft portion on which preferably a plurality of pistons, disposed radially in a respective element bore are supported relative to the drive shaft. The pistons move back and forth in the respective element bore by rotation of the drive shaft. An axial bearing disk with a plurality of lugs which are disposed on the circumference and engage corresponding grooves in the pump housing is mounted in the pump housing with the aid of a retaining device.Type: GrantFiled: December 3, 1999Date of Patent: August 14, 2001Assignee: Robert Bosch GmbHInventor: Uwe Kuhn
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Patent number: 6213647Abstract: A damping thrust bearing for vehicle steering knuckles, comprising a damping ring made of materials of low friction factor and strong impact-resistance and a ring-thrust ring. The lateral ring-form surface of said damping ring (6) has a sliding connection with the lateral ring-form surface of said thrust ring (7), so as to form a friction pair with sliding working surface (8). A shell (5), installed outside the friction pair formed by said damping ring (6) and said thrust ring (7), making the bearing an integral bearing.Type: GrantFiled: May 13, 1999Date of Patent: April 10, 2001Inventor: Zhichan Lin
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Patent number: 6193572Abstract: A propeller assembly that includes, in an exemplary embodiment, a cantilever spring for securing a propeller to a propeller shaft is described. In the exemplary embodiment, the propeller assembly includes a thrust bearing which tightly fits to an inclined surface of the propeller shaft. The thrust bearing includes an annular slot which forms a tight fit with one end of a hub of the propeller and one end of the spring. The propeller hub has a cylindrical shape, and a plurality of blades extend from an outer surface of the hub. A bore extends through the propeller hub, and the spring extends into the hub bore. The assembly further includes a washer and a nut which engages to a threaded end of the propeller shaft.Type: GrantFiled: April 11, 2000Date of Patent: February 27, 2001Assignee: Outboard Marine CorporationInventor: Gerald F. Neisen
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Patent number: 6190050Abstract: A wear-resistant bearing system utilizes a grid pattern of wear-resistant material. In instances where two bearing surfaces slide with respect to one another, such as with a thrust bearing, wear-resistant material strips are inlaid in the surrounding support material. The strips of wear-resistant material are arranged on each component such that the strips intersect one another when one component is moved with respect to the other. This transverse relationship or grid pattern promotes extremely long component life.Type: GrantFiled: June 22, 1999Date of Patent: February 20, 2001Assignee: Camco International, Inc.Inventor: Steven Campbell
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Patent number: 6161961Abstract: A cup for needle bearings, having depressions or ramps arranged on the cup bottom for receiving lubricant, the ramps starting in a star shape from the middle of the cup bottom and being configured with a depth which decreases radially outwardly. At the middle of the cup bottom there is a central elevation with a rounded end face for the thrust of an end face of a shaft. The axial thrust behavior between these parts is thus optimized.Type: GrantFiled: April 24, 1998Date of Patent: December 19, 2000Assignee: The Torrington CompanyInventor: Karl Diemer