| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 384565000 | Roller structure | 47 |
| 20080260316 | Rolling Bearing - At least on a surface of a rolling element of a rolling bearing, innumerable minute concave recesses are randomly formed. An area percentage of the recesses on the surface having the recesses formed thereon is in a range from 5 to 20%, and a surface roughness parameter Rymax of the surface having the recesses formed thereon is in a range of 0.4 to 1.0. | 10-23-2008 |
| 20080298734 | Shell Type Needle Roller Bearing, Support Structure for Supporting a Compressor Spindle, and Support Structure for Supporting Driving Portion of a Piston Pump - To further reduce the manufacturing cost of a shell type needle roller bearing, and to ensure high quality of the shell type outer ring by subjecting the outer ring to a heat treatment that needs no adjustment of the atmosphere. | 12-04-2008 |
| 20080304783 | Method of Protecting Rolling Element Bearings Against Oil-Out Conditions and Bearings Made Thereby - A method of enhancing the operating life of roller bearings assemblies (B) subject to oil-out conditions is disclosed. The method comprises applying a tribological metal carbide reinforced amorphous hydrocarbon coating layer ( | 12-11-2008 |
| 20090016663 | THRUST ROLLER BEARING - Even when used at a high rotation speed, outside parts in relation to the radial direction of a cage | 01-15-2009 |
| 20090092348 | ROLLING BEARING - A diameter of each first ball | 04-09-2009 |
| 20090097794 | Gear Bearing - Gear bearings | 04-16-2009 |
| 20090123103 | Oil-Lubricated Roller Bearing Assembly - A roller bearing assembly is provided which is adapted to enhance lubrication performance for preventing seizure and for reducing frictional torque during rotation. The roller bearing assembly includes an inner ring ( | 05-14-2009 |
| 20090154860 | TAPERED ROLLER BEARING - The invention relates to a tapered roller bearing comprising at least one conical outer roller track, at least one conical inner roller track and tapered rollers which are arranged in a radial manner between the roller tracks and about the longitudinal central axis of the tapered roller bearing. The tapered rollers respectively comprise a conical first covering surface for carrying out an effective radial connection towards the outside in the rolling contact with the inner roller track and for carrying out an effective radial connection towards the inside in the rolling contact with the outer roller track and the central lines of the tapered rollers intersect in a common intersecting point on the longitudinal central axis. | 06-18-2009 |
| 20090162001 | Tapered Roller Bearing - A tapered roller bearing includes bearing rings including an inner ring and an outer rings, a roller rolling between the inner ring and the outer ring, and a cage having a pocket holding the roller and located adjacent to the outer ring. A radial clearance δ between the cage and the outer ring when the cage is in a neutral position, a radial clearance δ | 06-25-2009 |
| 20090232437 | BEARING ARRANGEMENT FOR A PIVOT BEARING - In a bearing arrangement for a pivot bearing ( | 09-17-2009 |
| 20100027933 | NEEDLE BEARING - The invention provides a needle bearing which has an extraordinarily large number of contact points and allows a long life to be expected even in a corrosive and/or hydrogen-containing working atmosphere. This is achieved by means of a needle bearing which has a bearing ring with a hardened austenitic steel which has a total carbon and nitrogen content of from 0.8 to 1.2% by weight and needles which roll on a bearing surface of the bearing ring and are composed of a ceramic whose surface defects are smaller than 40 μm. | 02-04-2010 |
| 20100150489 | ROLLING MEMBER, ROLLING BEARING AND PROCESS FOR MANUFACTURING ROLLING MEMBER - The invention provides a deep groove ball bearing which exhibits a long life even in a high-temperature environment or an environment involving the penetration of water in spite of its low alloying element content. The outer race, inner race and ball constituting the bearing are made of a steel which contains 0.3 to 0.4% of carbon, 0.3 to 0.7% of silicon, 0.3 to 0.8% of manganese, 0.5 to 1.2% of nickel, 1.6 to 2.5% of chromium, 0.1 to 0.7% of molybdenum and 0.2 to 0.4 of vanadium with the balance consisting of iron and impurities and in a total content of silicon and manganese of 1.0% or below, a total content of nickel and chromium of 2.3% or above and a total content of chromium, molybdenum and vanadium of 3.0% or below. Surface hardened layers are formed in the outer race, inner race and ball respectively and the surface hardened layers exhibit hardness of 725 to 800 HV, while the maximum particle size of carbides dispersed in the surface hardened layers is 10 μm or below and the area ratio thereof is 7 to 25%. Further, the inner parts exhibit hardness of 450 to 650 HV. | 06-17-2010 |
| 20110091145 | CYCLINDRICAL ROLLER BEARING - A cylindrical roller bearing assembly capable of increasing the load bearing capability with respect to the thrust load and of easily controlling the shape of the cylindrical roller is provided. The cylindrical roller bearing assembly includes an inner ring, an outer ring and a plurality of cylindrical rollers. One or both of the inner and outer rings has/have a collar. A surface portion encompassed within the region of radial dimensions of 0.12Da to 0.20Da as measured from an outer diametric edge of an end face of each of the cylindrical rollers to a roller axis, wherein Da represents an outer diameter of each of the cylindrical rollers is rendered to be a crowned portion of a tapered shape inclined at an angle θr of 0.25 to 1° relative to a plane perpendicular to the roller axis. | 04-21-2011 |
| 20110206310 | Bearing System for a Wind Turbine Rotor - A bearing system for a wind turbine rotor is provided. The bearing system includes a double row tapered roller bearing in O-arrangement, wherein the double row tapered roller bearing has an inner ring, a circumferential row of tapered rollers supported on the inner ring, and a floating inner rib. Further, the bearing system includes a driving device as well as a removable interlocking device. The floating inner rib is axially moved by the driving device to a predetermined position so as to abut on each large roller end facing axially outwards in order to apply a corresponding preload on each tapered roller, and is also rigidly coupled to the inner ring by the interlocking device. | 08-25-2011 |
| 20110222811 | RETAINER-EQUIPPED ROLLER - A retainer-equipped roller includes a retainer ( | 09-15-2011 |
| 20110268380 | RADIAL NEEDLE BEARING - In rollers used in a radial needle bearing, the circularity of crowning sections provided at opposite ends of each roller is 0.6 μm or smaller. This allows for reduction of sound (noise) produced when the radial needle bearing rotates by itself and can also allow for reduction of sound (noise) of a rotational machine when the radial needle bearing is installed and rotates therein. | 11-03-2011 |
| 20110274382 | LIGHTWEIGHT HYBRID BEARING ASSEMBLY AND A METHOD OF MAKING THEREOF - A lightweight hybrid bearing assembly and method of making thereof is disclosed. The bearing assembly includes an inner race and an outer race radially spaced from the inner race. One or both of the inner race and the outer race have a convex bearing surface. Between the inner race and the outer race, a plurality of ceramic roller elements are received. The ceramic roller elements have a concave bearing surface that engages the convex bearing surface or surfaces. Among other things, this accommodates axial misalignment of the races relative to one another. | 11-10-2011 |
| 20120141060 | OUTER RING OF TAPERED ROLLER BEARING AND TAPERED ROLLER BEARING - An outer ring has a tapered tubular portion having a tapered raceway surface, a small diameter side extension portion that extends radially outward from a small diameter side edge of the tapered tubular portion, and a large diameter side extension portion that extends from a large diameter side edge of the tapered tubular portion in a direction away from the axis of the outer ring. The small diameter side extension portion and the large diameter side extension portion are larger in thickness than the tapered tubular portion. | 06-07-2012 |
| 20130089285 | TAPERED ROLLER BEARING - A tapered roller bearing is proposed which can be assembled without the need of bottom expanding and caulking of its retainer. The diameter of the roller inscribed circle (R | 04-11-2013 |
| 20130129271 | WHEEL BEARING UNIT - A wheel bearing unit having two mirror-symmetrically arranged tapered roller bearings ( | 05-23-2013 |
| 20130170779 | RADIAL ROLLER BEARING ARRANGEMENT, IN PARTICULAR FOR A NEEDLE BUSHING - A radial roller bearing arrangement in which at least one retaining projection is provided as an anti-rotation feature of an outer ring. The projection is located on an inner diameter of a fixed rim formed on one axial side of the outer ring, so that the outer ring can be implemented with a radially inward-pointing flanged rim on its other axial side that can be formed after insertion of a needle roller and cage assembly to act for holding the needle roller and cage assembly in the outer ring. | 07-04-2013 |
| 20130202238 | MULTI-ROW TAPERED ROLLER BEARING AND TRANSMISSION HAVING SUCH A BEARING - A bearing assembly includes at least first, second and third raceway elements that are each separable from each other and at least first, second and third rows of truncated-cone-shaped rolling elements. The first and second raceway elements are disposed side-by-side in an axial direction of the bearing assembly and oppoe the third raceway element in a radial direction of the bearing assembly. The first and second rows of rolling elements are disposed between the first raceway element and the third raceway element and the third row of rolling elements is disposed between the second raceway element and the third raceway element. The rolling elements of the first and second rows commonly roll on a first raceway of the third raceway element and the rolling elements of the third row roll on a second raceway of the third raceway element, which is not parallel to the first raceway. | 08-08-2013 |
| 20140056550 | Remanufacturing of Bearings Using Isotropic Finishing and Thin Film Coatings - A method and system for processing a bearing component to extend its useful life include using the component in the bearing assembly for a portion of its initial useful life and then removing the component from the bearing assembly. The surface of the removed component is subjected to isotropic finishing, after which a protective wear coating is applied to the surface of the component. Once processed, the used bearing component is reinstalled for use. | 02-27-2014 |
| 20140126850 | CONFIGURATION FOR A ROLLER OF A ROLLER BEARING - A tapered roller for a tapered roller bearing, the tapered roller bearing having a raceway and a flange, and the tapered roller having a rolling surface configured to roll on the raceway and an end surface at the end of the rolling surface configured to face the flange. The end surface includes an abutment surface having a curvature and a radially outer end and a radially inner end and is configured to contact the flange. The curvature increases monotonically from a starting point on the abutment surface to the radially inner end of the abutment surface. | 05-08-2014 |
| 20140185977 | Alloy For A Bearing Component - A titanium alloy that is created to be formed into a bearing component, wherein the titanium alloy comprises from 5 to 7 wt % Al, from 3.5 to 4.5 wt % V, from 0.5 to 1.5 wt % Mo, from 2.5 to 4.5 wt % Fe, from 2.5 to 4.5 wt % Fe, from 0.05 to 2 wt % Cr. The alloy can optionally include one or more of the following elements: up to 2.5 wt % Zr, up to 2.5 wt % Sn, and up to 0.5 wt % C. The balance of the composition comprises Ti together with unavoidable impurities. | 07-03-2014 |
| 20140212082 | ROLLING-ELEMENT BEARING AND METHOD OF MANUFACTURING THEREOF - A rolling-element bearing includes an inner ring made of steel and having an inner-ring raceway, an outer ring having an outer ring raceway, and ceramic rolling elements which roll on the inner-ring raceway and on the outer-ring raceway. The inner ring has been subjected to a heat treatment to harden it. The heat treatment is concluded with the performance of a final heat-treatment step at a predetermined temperature. In the inner ring, compressive residual stresses are formed in an outer layer by cold working in the region of the inner-ring raceway. The inner ring also has been subjected to a bluing treatment. | 07-31-2014 |
| 20140321788 | SUPPORT BEARING FOR A ROLL - Support bearing which comprises a first ring and a second ring disposed inside the first ring and substantially coaxial thereto. The first ring and the second ring define between them an annular hollow space in which a cage structure is disposed comprising two circular crowns disposed distanced from each other and between which a plurality of rolling elements are disposed, provided to allow the reciprocal rotation of the first ring and the second ring. The bearing is suitable to support a roll which is used particularly, but not exclusively, in coating processes of a metal product, such as for example strip, wire, bars, by means of metal coating methods such as those known such as galvanization, aluminizing or other similar coating processes. | 10-30-2014 |
| 20140321789 | MACHINE PART, ROLLING BEARING, TAPERED ROLLER BEARING, AND METHOD FOR MANUFACTURING MACHINE PART - An outer ring, an inner ring and a ball are each constituted of steel containing at least 0.60 mass % and not more than 1.50 mass % of carbon, at least 0.15 mass % and not more than 2.50 mass % of silicon, at least 0.30 mass % and not more than 1.50 mass % of manganese, and at least 0.20 mass % and not more than 2.00 mass % of chromium with the rest consisting of an impurity. A nitrogen concentration in surface layer portions is at least 0.3 mass %. An average quantity of residual austenite as a whole in each of the outer ring, the inner ring and the ball is not more than 20 volume %. | 10-30-2014 |
| 20140341493 | DEVICE FOR REDUCING PRESSURE IN HOLLOW BODIES IN MEDIA AT HIGHER TEMPERATURES - The invention relates to the field of materials science and to a device for reducing pressure in cavities in media at higher temperatures, such as those devices which can be used for devices for hot-dip coating metal materials in the metal processing industry for example. The aim of the invention is to provide a device by means of which pressure can be reduced in the cavity of the hollow bodies in a reliable and controlled manner and simultaneously the penetration of the media can be delayed or completely prevented at the higher temperatures. This is achieved by a device for reducing pressure in hollow bodies in media at higher temperatures, wherein at least one opening to the cavity of the hollow body is provided in hollow body regions which are not used for the intended application, said opening being closed from the medium surrounding the hollow body by at least one component made of a gas-permeable metal or ceramic material. | 11-20-2014 |
| 20150010261 | MACHINE ASSEMBLY - A machine assembly includes a housing in which a shaft element is rotatably supported by a bearing assembly, the bearing assembly including two tapered roller bearings which are preloadable against each other and having at least one bearing outer ring and first and second bearing inner rings. The first bearing inner ring includes, in one of its axial end regions, a sleeve-shaped extension formed directly from the material of the first bearing inner ring, which sleeve-shaped extension directly contacts an end side of the second bearing inner ring. | 01-08-2015 |
| 20150010262 | ANTIFRICTION BEARING - Anti-friction bearing, comprising a metallic outer ring and a metallic inner ring with respective rolling-body raceways, and a plurality of metallic rolling bodies which roll on said rolling-body raceways, wherein an electric insulation layer ( | 01-08-2015 |
| 20150093064 | METHODS OF OPERATING ROLLER BEARING APPARATUSES INCLUDING COMPLIANT ROLLING ELEMENTS - In an embodiment, a roller bearing apparatus may include a rotor having first superhard raceway elements distributed circumferentially about an axis. Each first superhard raceway element includes a raceway surface positioned/configured to form a first portion of a raceway. The apparatus includes a stator including second superhard raceway elements generally opposed to the first superhard raceway elements. Each second superhard raceway element includes a raceway surface positioned/configured to form a second portion of the raceway. The apparatus includes rolling elements interposed between the rotor and stator and positioned and configured to roll on the raceway. One or more of the rolling elements may be configured to elastically deform on the raceway during use. At least a portion of the raceway exhibits a first modulus of elasticity greater than a second modulus of elasticity of at least a portion of the one or more of the rolling elements. | 04-02-2015 |
| 20150369289 | TAPERED ROLLER BEARING | 12-24-2015 |
| 20150369290 | BEARING CAGE FOR A ROLLING-ELEMENT BEARING, IN PARTICULAR FOR A TAPERED ROLLER BEARING - A bearing cage for a tapered rolling-element bearing includes at least one first ring element and at least one second ring element connected to the at least one first ring element via at least one bridge. The first ring element and the second ring element are configured to receive at least one rolling element between them and to retain the rolling element axially, the bridge is configured to retain the at least one rolling element circumferentially, and the at least one first ring element includes a flange extending at least partially radially outward beyond a radially outer surface of the at least one bridge. | 12-24-2015 |
| 20160025133 | FOUR SEGMENT CONTACT THRUST ROLLER BEARING - A four segment contact thrust roller bearing is provided having first and second radially extending raceways. A plurality of rollers are located between the first and second raceways, and a cage with pockets hold the rollers spaced apart from one another. The rollers are each split on a circumferential surface thereof to define two separate roller segments that each contact the first and second raceways. | 01-28-2016 |
| 384567000 | Hollow | 3 |
| 20100021101 | RADIAL ROLLER BEARING, IN PARTICULAR FOR STORING SHAFTS IN WIND TURBINE TRANSMISSIONS - A radial roller bearing for shafts in wind turbine transmissions, which includes an external bearing ring with an inner runway, an internal bearing ring arranged coaxial thereto which has an outer raceway and roller bodies on runways between bearing rings spaced circumferentially by a bearing cage and distributed uniformly on a circumference replaced by hollow rollers. To prevent slip, the hollow rollers have a greater diameter and lower modulus of elasticity ensuring, in a load-free state, continuous contact by the radial roller bearing with the bearing rings and continuous drive for the bearing cage and roller bodies at kinematic rotation speed. The hollow rollers have increased bending fatigue strength, and their inner envelope surfaces are formed by mechanical processing for further inherent compression stresses of at least −200 MPa, superimposed on the hollow rollers maximum load stress along with the inherent compression stresses resulting from their heat treatment. | 01-28-2010 |
| 20100054650 | RADIAL ROLLER BEARING, IN PARTICULAR FOR STORING SHAFTS IN WIND TURBINE TRANSMISSIONS - A radial roller bearing for storing shafts in wind turbine transmissions, which has an external bearing ring with an inner runway, an internal bearing ring arranged coaxial thereto provided with an external runway, and a plurality of roller bodies that displace on the runways between the bearing rings held at regular intervals by a bearing cage. To prevent slip, the roller bodies are replaced by hollow rollers that have a greater diameter and a smaller elasticity module than the roller bodies ensuring, when the radial roller bearing is in the load-free state, permanent contact with the bearing rings, a permanent drive of the bearing cage and that the roller bodies have kinematic rotation. The hollow rollers have a higher bending strength, and their internal cover surface has a maximum surface roughness of Rz≦25 μm preventing localized peaks of tension, without any disaggregation in the axial direction. | 03-04-2010 |
| 20150377288 | PROCESS FOR MANUFACTURING A HOLLOW ROLLER, HOLLOW ROLLER OBTAINABLE VIA SUCH A PROCESS AND ROLLER BEARING INCLUDING SUCH A ROLLER - A process for manufacturing a hollow roller of a roller bearing including steps of: machining an outer radial cylindrical surface, with a circular cross section centered on a first axis, and machining an inner radial cylindrical surface with a circular cross section centered on a second axis. These two steps are realized on the same lathe. The hollow roller is provided with the outer radial cylindrical surface, with a diameter of at least 5 mm, and the inner radial cylindrical surface. An offset between the first axis and the second axis, measured in the hollow roller between two axial surfaces of the hollow roller, is less than 2 μm, and an inclination angle between the first axis and the second axis is less than one minute of angle. The roller bearing comprises amongst others, at least one such hollow roller. | 12-31-2015 |
| 384568000 | Curved roller | 9 |
| 20080212912 | Radial Roller Bearing, In Particular A Single-Groove Grooved Ball Bearing - The invention relates to a radial roller bearing which is embodied as a single-grooved grooved ball bearing. The bearing bodies are embodied as spherical disks having two symmetrical, parallel lateral surfaces from a spherical base shape. According to the invention, the radial roller bearing has a larger contact surface of the spherical disk in relation to the bearing body tracks thereof as well as an increased number of bearing bodies, wherein one part of the width (b | 09-04-2008 |
| 20080267552 | Shell-Type Needle Roller Bearing - Durability of a pair of inward flange portions | 10-30-2008 |
| 20090185770 | RADIAL ANTI-FRICTION BEARING, IN PARTICULAR, SINGLE-ROW SPHERICAL ROLLER BEARING, AND METHOD FOR MOUNTING THEREOF - A radial anti friction bearing ( | 07-23-2009 |
| 20110064348 | Roller Bearing - The invention relates to a roller bearing comprising an inner ring that defines a bearing axis and an outer ring, said rings forming bearing races. Roller bodies are provided between the races, the geometry of the roller bodies and the races being adapted to one another in such a way that the roller bearing forms a barrel roller bearing that can be stressed on one side. Preferably the roller bodies lie against two osculation contact points lying outside the self-locking region on the races of the inner and outer rings. | 03-17-2011 |
| 20110317952 | TANDEM ANGULAR CONTACT ROLLER BEARING WITH CONCAVE ROLLER PROFILE FOR IMPROVED ROLLER GUIDANCE - A tandem roller bearing having circumferential inner and outer races each having first and second contact surfaces with convex profiles is provided. Rolling elements are arranged between the inner and outer races, each of the rolling elements having a concave profile corresponding to the convex profiles of a respective pairing of the first contact surfaces of the inner and outer races or of the second contact surfaces of the inner and outer races. A cage is arranged between the inner and outer races that separates and is guided by the rolling elements. The rolling elements include first and second sets of rolling elements having first and second axes of rotation that are arranged between the first and second contact surfaces of the inner and outer races, respectively. The first and second axes of rotation are inclined in a same direction with respect to a central axis of the inner race. | 12-29-2011 |
| 20120033909 | TAPERED ROLLER BEARING AND METHOD OF DESIGNING THE SAME - In a tapered roller bearing assembly, a crowning profile formed portion of the roller rolling surface is made up of a contact area crowned portion ( | 02-09-2012 |
| 20120114279 | ROLLER FOR A ROLLING BEARING - A roller for a rolling bearing has an outer surface revolving about an axis of symmetry and a lateral face arranged on either side of the outer surface. The roller is intended to rotate in the bearing about the axis of symmetry while bearing on the outer surface. The roller has two recesses produced respectively on one lateral face extending along the axis of symmetry. The recesses have an opening formed on the lateral face and are separated axially by a material bridge. The recesses are defined by a lateral revolving surface, the shape whereof is divergent tapered from the opening to the material bridge. | 05-10-2012 |
| 20130336610 | ROLLER BEARING - A tapered roller bearing ( | 12-19-2013 |
| 20160160914 | RELIEF CONTOUR FOR A ROLLER BEARING - The roller bearing includes a relief contour ( | 06-09-2016 |
