Class / Patent application number | Description | Number of patent applications / Date published |
384099000 | Hydraulic or pneumatic bearing support | 17 |
20080240632 | SUPPORT DAMPERS FOR BEARING ASSEMBLIES AND METHODS OF MANUFACTURE - A support damper is provided for a bearing assembly to improve the damping capabilities of an uncentered squeeze film damper and to provide a support structure stiffness to minimize rotor to structure unbalance response. In one embodiment, and by way of example only, the support damper includes an inner ring, an outer ring, and a U-shaped beams. The inner ring is configured to be disposed around the bearing assembly and to extend axially along a portion thereof. The outer ring is spaced apart from the inner ring and extends radially outwardly relative thereto. The U-shaped beams couples the inner ring to the outer ring. Methods of manufacturing the support damper are also provided. | 10-02-2008 |
20090034887 | Hydrostatic gas bearing, rotator and CT scanner - A hydrostatic gas bearing capable of easily adjusting a clearance between a rotor and a radial bearing pad is provided. This hydrostatic gas bearing comprises a radial bearing pad radially supporting a rotor, a linear motion guide moving the radial bearing pad and a ball stud swingably coupling the radial bearing pad to the linear motion guide. The linear motion guide moves the radial bearing pad in a direction intersecting with a direction connecting the center of rotation of the rotor and the ball stud with each other. The quantity of adjustment in movement of the radial bearing pad caused by the linear motion guide is larger than the quantity of change in the clearance between the outer peripheral surface of the rotor and the radial bearing pad, whereby a small quantity of the bearing clearance can be precisely adjusted. | 02-05-2009 |
20090263057 | BEARING DAMPER ELEMENT, BEARING, AND GAS TURBINE ENGINE - A damper element of the present invention is applied to a bearing damper element disposed between a rotating object and a supporting object. The damper element includes a slit that is formed between an inner surface and an outer surface of an annulus being supported by the supporting object, and a viscous fluid that is filled in the slit. The slit is extended substantially along a circumferential direction of the annulus. The annulus is, for example, an outer ring or an inner ring of a rolling element bearing, a plane bearing, or a collar that holds a bearing. | 10-22-2009 |
20090263058 | Squeeze-film damper arrangement - A squeeze-film damper arrangement comprising: concentric inner and outer components defining an annular gap there between for accommodating radial motion of the inner component within the outer component; and a fluid filling the annular gap around the outside of the inner component for damping said radial motion of the inner component, the fluid being axially contained between spaced-apart, radially-compliant first and second face-seals provided between the inner and outer components; wherein the first face-seal is provided between the opposing faces of a first pair of radially overlapping circumferential sealing elements associated with the inner and outer components respectively, a first one of the circumferential sealing elements in said pair being mounted for axial movement relative to the associated inner or outer component and being axially biased against the second of said circumferential sealing elements in said pair to form the first face-seal. | 10-22-2009 |
20090274400 | Rotating -Body Support Structure - The present invention provides a rotating-body support structure that is capable of obtaining a damping effect of a rotating body with a simple configuration. To this end, the rotating-body support structure is configured to include a housing ( | 11-05-2009 |
20090304313 | COMPLIANT HYBRID GAS JOURNAL BEARING USING INTEGRAL WIRE MESH DAMPERS - A compliant hybrid gas journal bearing includes compliant hybrid bearing pads having a hydrostatic recess and a capillary restrictor for providing a flow of pressurized gas to the bearing. The bearing also includes an inner rim adjacent the bearing pads, an outer rim and a damper bridge between the inner and outer rims. The damper bridge has an axial length that is less than an axial length of the bearing pads and the outer rim to form a damper cavity on each side of the damper bridge. An integral wire mesh damper is situated within the damper cavity on each side of the damper bridge. Integral centering springs are located between the inner and outer rims to provide radial and rotational compliance to the bearing pads. The oil-free bearing design addresses the low damping and low load capacity characteristics that are inherent in present day compliant air foil bearing designs, while retaining the compliance to changes in rotor geometry. | 12-10-2009 |
20100061668 | HIGH PERFORMANCE THRUST BEARING PAD - An exemplary bearing for a turbocharger includes one or more thrust pads where each thrust pad includes a portion of a conical well; and a through-bore that includes lubricant channels, each channel configured to direct lubricant from the bore to a corresponding conical well of a thrust pad. Other exemplary technologies are also disclosed. | 03-11-2010 |
20100092115 | HYDRODYNAMIC BEARING WITH ASYMMETRICAL LOBES - Hydrodynamic bearing with four lobes with centres of curvature that are eccentric relative to its geometrical centre, said lobes being separated by oil feed grooves wherein the lobes are dissymmetrical and present;—angular apertures of at least two different values;—at least two different eccentricities relative to the geometrical centre of the bearing; the centres of two opposing lobes being aligned with the geometrical centre of the bearing. | 04-15-2010 |
20100303392 | Hydraulic end float adjuster - A bearing system for reducing end clearance and axial vibrations includes a bearing housing and a bearing. The bearing is a thrust bearing and may be of any type, such as a flat thrust face, a taper land thrust bearing or a tilt pad thrust bearing. The bearing housing includes a cavity to hold the bearing. A fluid cavity is formed between the bearing and the bearing housing. At least one fluid passageway extends through the bearing housing to feed fluid to the fluid cavity. As fluid is introduced to the fluid cavity the pressure in the cavity moves the bearing outward, away from the bearing housing and towards the rotating thrust collar, reducing the clearance, or space, between the face of the bearing and the thrust collar, reducing or eliminating the vibrations. | 12-02-2010 |
20110064340 | METHOD AND APPARATUS FOR STABILIZING A SQUEEZE FILM DAMPER FOR A ROTATING MACHINE - A rotor bearing system for a rotating machine includes a housing having a bore that provides an inner surface. A bearing assembly is disposed within the bore and includes an outer surface. An annular cavity is provided radially between the outer surface and the inner surface. At least one protrusion extends radially outwardly from at least one of the inner and outer surfaces to an apex and into the annular cavity. A radial gap is arranged between the apex and the opposite surface from which the protrusion extends. In the disclosed example, the annular cavity is filled with an oil to provide a squeeze film damper between the housing and the bearing assembly. The protrusions exert a hydrodynamic preload on the bearing assembly, which reduces vibration during operation of the rotating machine. | 03-17-2011 |
20110188789 | INTEGRAL TILTING PAD BEARING - There is disclosed a bearing to support a rotating shaft. The bearing includes a cylindrical housing defining a central opening. A plurality of bearing pads integrally coupled to the housing with each bearing pad having a circumferential surface defining a portion of the central opening. A plurality of pins disposed in a bore defined in the housing, with each pin aligned as a pivot for each corresponding pad. Each pad can tilt about the pin in relation to the rotating shaft. Each pad is coupled to the housing by a pair of webs defined by a plurality of cuts forming a plurality of openings in the housing substantially parallel to a line tangent with the circumferential surface of the pad. Each pin is aligned parallel with the rotating pad. | 08-04-2011 |
20110188790 | Hydraulically Damping Bushing Bearing - Chambers for a bushing bearing with damping means include outer sleeve and inner bearing part, accommodated in the outer sleeve with rigid bearing core and elastomeric bearing body surrounding the core. The expanding walls of the chambers are disposed transversely to the bearing axis (A). The inner bearing part is segmented with respect to the longitudinal axis (A) of the bearing and includes a center main segment with bearing core and bearing body and two end segments, each having an inner ring, an outer ring, and an interposed elastomeric element forming expanding wall of a chamber. The end segments are pressed with inner ring onto axial ends of the bearing core so that the material overlaps between the elastomeric elements of the end segments and the ribs of the bearing body. The channel is formed outside of the bearing body in a channel carrier element. | 08-04-2011 |
20140126845 | MAIN SPINDLE DEVICE OF MACHINE TOOL - A main spindle device of a machine tool includes a plurality of bearings that rotatably support a main spindle of the machine tool, and that are placed inside a housing with a pressure receiving member interposed between the bearings and the housing. The pressure receiving member is capable of moving in a direction perpendicular to an axial direction of the main spindle. A pressure chamber, which a pressure medium pressing the pressure receiving member toward the bearings in the perpendicular direction is supplied to, is formed in the housing. A plurality of the pressure chambers are independently formed in the housing so as to correspond to the bearings, respectively. The main spindle device further includes a plurality of adjustment units provided independently so as to correspond the pressure chambers, respectively, and each capable of independently adjusting a pressure of the pressure medium for a corresponding one of the pressure chambers. | 05-08-2014 |
20140219589 | Roller Assembly - A roller assembly for a turret, a turret bearing system for a turret, and a method of manufacture of a roller assembly for a turret. The roller assembly comprises a first and a second roller; an axle on which the first and the second rollers are rotatably mounted; and a biasing mechanism located between the first and the second rollers and supporting the axle. | 08-07-2014 |
20150292555 | WATER LUBRICATED BEARING DEVICE - The arrangement comprises a fluid bearing comprising a first fluid bearing element located in a bearing housing and a piston located in a pump housing. The bearing housing comprises a bearing housing opening. The pump housing comprises a pump housing opening. The first fluid bearing element is connected to the piston by means of a connection means extending from the first fluid bearing element through the bearing housing opening to the piston through the pump housing opening. The piston is arranged to reciprocate in the pump housing. The pump housing is connected to a fluid reservoir by means of a first inlet. The bearing housing comprises a first outlet for allowing fluid to exit the bearing housing. The arrangement further comprises a fluid transport means fluidly connecting the pump housing and the bearing housing. | 10-15-2015 |
20160186804 | Braking System - An example method includes: for a component supported by an air bearing, detecting a speed of movement of the component relative to a predefined location, the air bearing generating an air flow to elevate the component relative to a ground plane; and controlling the air bearing based, at least in part, on the speed detected. | 06-30-2016 |
20180021904 | MAIN SPINDLE DEVICE FOR MACHINE TOOL | 01-25-2018 |