Class / Patent application number | Description | Number of patent applications / Date published |
384103000 | Flexible member | 61 |
20080205803 | Manufacturing apparatus for a foil bearing - A manufacturing apparatus for a foil bearing comprises: a tubular positioning member having a substantially cylindrical wall provided with engagement portions each having a shape corresponding to at least part of a wave-shaped portion of associated one of foil members such that positioning of the foil members can be achieved by engaging the wave-shaped portion of each foil member to the associated engagement portion of the positioning member and inserting the positioning member into an inside of the stationary mount member; and a welding device for welding the foil members to the inner circumferential surface of the stationary mount member, wherein the positioning member is formed with openings in the substantially circumferential wall thereof to allow the welding device to access the foil members from inside the positioning member through the openings. | 08-28-2008 |
20090274401 | WEAR RESISTANT FOIL BEARING ASSEMBLY - A foil bearing assembly for supporting a rotating member that rotates about an axis including a stationary mount member spaced from the rotating member so that a gap is defined between the stationary mount member and the rotating member. A foil member is disposed in the gap between the rotating member and the stationary mount member. At least one of the rotating member, the stationary mount member or the foil member includes a wear resistant coating layer. | 11-05-2009 |
20090324148 | FIBER OPTIC SENSING DEVICE AND METHOD FOR MONITORING FOIL BEARINGS - A rotary machine includes a rotary component disposed to rotate with respect to a stationary component. A foil bearing is disposed between the stationary component and the rotary component and configured to rotatably support the rotary component. A fiber optic sensing system including one or more fiber optic sensors is disposed in the foil bearing and configured to detect one or more parameters related to the foil bearing. | 12-31-2009 |
20100098359 | Bearing arrangement - A bearing arrangement comprising first and second components ( | 04-22-2010 |
20100278464 | Blade Gasodynamic Bearing - The invention is related to mechanical engineering in particular to compliant foil hydrodynamic bearings which is used in small-size high speed machines such as turbocompressors, cooling turbines etc. The inventive foil hydrodynamic bearing comprises a bearing case ( | 11-04-2010 |
20120045154 | Multiblade Gasodynamic Bearing - The invention is related to mechanical engineering in particular to compliant foil hydrodynamic bearings which is used in small-size high speed machines such as turbocompressors, cooling turbines etc. The inventive foil hydrodynamic bearing comprises a bearing case ( | 02-23-2012 |
20130216167 | KEYLESS/GROOVELESS FOIL BEARING WITH FOLD OVER TAB - An improved air foil bearing assembly is disclosed. The air foil bearing assembly includes a bearing housing having an axially extending bore therein and a shaft arranged within the bore for relative coaxial rotation with respect to the bearing housing. The shaft cooperates with the bearing housing to define an annular gap therebetween. A foil assembly is disposed in the annular gap, including at least one foil having at least one laterally extending tab. The tab is adapted to be received in and extend axially from the annular gap and is further adapted to be bent into frictional contact with an outer surface of the bearing housing to militate against axial movement of the foil. | 08-22-2013 |
20140147063 | RADIAL FOIL BEARING - The present invention relates to a radial foil bearing for supporting a rotary shaft. The radial foil bearing includes a top foil, a back foil, and a bearing housing accommodating the top and back foils. The top foil is formed by winding a rectangular metal foil into a cylindrical shape so that one end of the metal foil is extended out in a tangential direction of a cylinder formed by the metal foil. An engagement groove is formed on an inner circumferential surface of the bearing housing in an axial direction of the bearing housing, and the engagement groove is formed so that a depth direction thereof corresponds to one tangential direction of the cylinder of the top foil. The one end of the top foil engages with the engagement groove. | 05-29-2014 |
20140147064 | RADIAL FOIL BEARING - The radial foil bearing includes a top foil, a back foil, and a bearing housing accommodating the top and back foils, and supports a rotary shaft. Engagement grooves are formed on both side surfaces of the bearing housing to extend from the outer circumferential edge to the inner circumferential edge of the side surface. Notches are formed in circumferential edges on both sides of the back foil. A locking member is locked into the engagement grooves of the bearing housing and the notches of the back foil, and includes a pair of engagement legs engaging with the engagement grooves and the notches, and a connection portion connecting the engagement legs together to be disposed near one ends of the engagement legs. | 05-29-2014 |
20140185969 | BEARING ARRANGEMENT - A bearing arrangement ( | 07-03-2014 |
20140270603 | BEARING SLEEVE - Disclosed is a bearing sleeve for supporting a shaft of an air cycle machine. The bearing sleeve includes an outer diameter and an inner diameter. The outer diameter is within a range of 3.214 and 3.216 inches. Further included is a foil retaining cavity provided in the inner diameter of the sleeve. The foil retaining cavity includes a slot and first and second openings located at opposing axial ends of the slot. Each of the first and second openings include a small portion and a large portion having different axial lengths. A ratio of the combined axial lengths of the large portions to an axial length of the foil retaining cavity is within a range of 0.19:1 and 0.22:1. Further included is a seal attachment portion provided at one axial end of the bearing sleeve configured to circumferentially support a seal. | 09-18-2014 |
20140270604 | BEARING SLEEVE - Disclosed is a bearing sleeve for supporting a shaft of an air cycle machine. The bearing sleeve includes an outer diameter and an inner diameter. The outer diameter is within a range of 3.222 and 3.224 inches. Further included is a foil retaining cavity provided in the inner diameter of the sleeve. The foil retaining cavity includes a slot and first and second openings located at opposing axial ends of the slot. Each of the first and second openings include a small portion and a large portion having different axial lengths. A ratio of the combined axial lengths of the large portions to an axial length of the foil retaining cavity is within a range of 0.19:1 and 0.22:1. Further included is a seal attachment portion provided at one axial end of the bearing sleeve configured to circumferentially support a seal. | 09-18-2014 |
20140270605 | BEARING SLEEVE - Disclosed is a bearing sleeve for supporting a shaft of an air cycle machine. The bearing sleeve includes an outer diameter and an inner diameter. The outer diameter is within a range of 3.222 and 3.224 inches. Further included is a foil retaining cavity provided in the inner diameter of the sleeve. The foil retaining cavity includes a slot and first and second openings located at opposing axial ends of the slot. Each of the first and second openings include a small portion and a large portion having different axial lengths. A ratio of the combined axial lengths of the large portions to an axial length of the foil retaining cavity is within a range of 0.19:1 and 0.22:1. | 09-18-2014 |
20150030269 | RADIAL FOIL BEARING - A radial foil bearing ( | 01-29-2015 |
20150292552 | BEARING SLEEVE FOR AIR BEARING - An air bearing assembly is provided that includes a bearing sleeve that has two slots side-by-side having rectangular profiles for engaging the ends of first and second bearing foils for supporting a shaft of a dual-stage compressor. The first rectangular-profile slot, which may be made using a broaching process, is designed to receive first ends of the first bearing foil and the second bearing foil. The second rectangular-profile slot, which may also be made using a broaching process, is designed to receive a second end of the second bearing foil. This dual-slot design replaces the complex “L” shaped single slot design of conventional bearing sleeves, allowing for high-volume, low-cost manufacturing of the bearing sleeves. The dual-slot design also provides for robust engagement of the bearing foils with the bearing sleeves, while allowing easy assembly and installation of the air bearing assemblies. | 10-15-2015 |
20150337894 | FOIL BEARING - A foil bearing includes an outer member ( | 11-26-2015 |
20160010682 | RADIAL FOIL BEARING | 01-14-2016 |
20160010686 | BEARING | 01-14-2016 |
20160025130 | FOIL JOURNAL BEARING APPLICABLE TO HIGH SPEED MACHINING CENTER - A foil journal bearing. A single foil engages an inner surface of and is mounted to the bearing housing. The single foil extends circumferentially of the inner surface and has a generally flat top foil portion and a bump foil portion which is disposed between the top foil portion and the inner surface of the housing. The bump foil portion comprises a plurality of circumferentially spaced ridges which engage the top foil portion and further comprises a plurality of generally flat portions between the ridges respectively and which engage the inner surface of the housing. | 01-28-2016 |
20160082554 | METHOD FOR PRODUCING A CORRUGATED FOIL BEARING STIFFENER AND OBTAINED STIFFENER - A method for producing a corrugated foil bearing stiffener involves starting with an austenitic nickel superalloy sheet ( | 03-24-2016 |
20160084301 | ROTATING MACHINERY WITH ADAPTIVE BEARING JOURNALS AND METHODS OF OPERATING - A method for operating a rotating machinery comprising a rotor, a rotor shaft, and at least one journal bearing supporting the rotor shaft is disclosed. The bearing comprises a bearing housing, a bearing surface in the bearing housing, a sleeve torsionally and axially fitted on the shaft, and a lubrication oil film filling a clearance between the outer surface of the sleeve and the bearing surface. The method comprises the step of modifying the clearance by modifying a radial dimension of the outer surface of the sleeve as a function of a rotation speed of the shaft. | 03-24-2016 |
20160091015 | JOURNAL AIR BEARING WITH AIR-FILM-SUPPLY VENT - A journal air bearing is provided. The bearing includes a top foil configured to receive the shaft, an intermediate foil disposed radially outboard the top foil, and a journal sleeve disposed radially outboard the intermediate foil. The intermediate foil defines a plurality of holes configured to act as a vent to communicate fluid to an increased supply area to an air film. | 03-31-2016 |
20160138650 | AIR CYCLE MACHINE WITH BEARING FAILURE DETECTION - A bearing monitoring system is provided including one or more bearings within a flow passage and a working fluid passing over at least one surface of the bearings. A first thermocouple is located in the flow passage upstream relative to the one or more bearings and configured to measure a first temperature of the working fluid and a second thermocouple is located in the flow passage downstream relative to the one or more bearings and configured to measure a second temperature of the working fluid. The system further includes a control device in communication with the first thermocouple and the second thermocouple, and configured to compute a temperature gradient across the one or more bearings from the first temperature and the second temperature, compare the temperature gradient against a known value, and if the temperature gradient exceeds the known value, the control device is configured to provide an alert. | 05-19-2016 |
20160186806 | AIR BEARING SHAFT CHROME PLATING - An air bearing shaft for a cabin air compressor includes a first edge and a second edge, a surface extending between the first edge and the second edge, and chrome plating on the surface between the first edge and the second edge. L | 06-30-2016 |
384105000 | Thrust bearing | 19 |
20080260308 | HYDRODYNAMIC BEARING - A hydrodynamic bearing is provided that includes an annular main foil having axially spaced inner and outer surfaces. Bump foils are supported circumferentially on the outer surface. Top foils are supported circumferentially on the inner surface opposite the bump foils. In one example, spacers are arranged between the top foils and the main foils. The spacers can be provided by chemically etching the main foil, in one example. The bump foils include first and second corrugated portions respectively providing first and second axially heights. The first axial height is less than the second axial height and is arranged at a leading edge of the bump foil relative to the direction of airflow across the hydrodynamic bearing. | 10-23-2008 |
20100027925 | THRUST BEARING - A hydrodynamic bearing set, for use with a thrust disk disposed between planar surfaces of a housing, includes first and second topfoils disposed adjacent first and second thrust disk axial bearing surfaces and removably secured to the housing. An underspring is secured between each planar housing surface and the corresponding topfoil. Dual-leaf spring pairs attached to at least one topfoil periphery function to urge the topfoils away from the thrust disk axial bearing surfaces by applying a force against a planar housing surface, another topfoil, or a spacer washer secured between adjacent topfoil dual-leaf pairs or frictionally retained within the housing. Alternatively, a wavy washer, a conical spring, a Belleville washer, or a coil spring can be substituted for the dual-leaf spring pairs. | 02-04-2010 |
20100046866 | GAS THRUST BEARING AND BEARING BUSH THEREFOR - A gas thrust bearing including a bearing bush and a housing accommodating the bearing bush. The bearing bush includes a bush body defining a longitudinal axis. The bush body includes a plurality of recesses formed on an outer surface of the bush body, and a plurality of capillary holes extending from a floor of each recess of the plurality of recesses through the bush body to an inner surface of the bush body. A cross section of the bush body transverse to the longitudinal axis, through each of the plurality of capillary holes, has a local wall thickness that is greater than a wall thickness in an immediate environment of the capillary hole. | 02-25-2010 |
20110150376 | TRUST FOIL BEARING - The present invention relates to a thrust foil bearing comprising a plurality of bumps, and a plurality of top foils, wherein a plurality of cut portions is formed radially on the base in such a manner as to be extended by a predetermined length toward the outer circumference of the bearing from the inner circumference of the bearing, thereby providing excellent stability against heat. | 06-23-2011 |
20120020595 | Compliant Bearing - A first embodiment of a compliant bearing includes a main body and a bearing surface. The main body and the bearing surface may be engaged with one another via one or more bearing surface springs configured such that the bearing surface is compliant with respect to the main body. A second embodiment of a compliant bearing includes a main body and at least one bearing pad. The main body and the bearing pad may be engaged with one another via one or more pad radial and/or pad axial springs configured such that the bearing pad is compliant with respect to the main body. A sensor web may be integrated into the compliant bearing. In one embodiment the sensor web comprises at least one sensor configured as a strain gauge and affixed to a bearing surface spring. | 01-26-2012 |
20120207414 | Thrust Foil Air Bearing - According to the present invention, a ramp | 08-16-2012 |
20120281936 | FOIL THRUST BEARING APPLICABLE TO HIGH SPEED MACHINING CENTER - A foil thrust bearing applicable to high speed machining and grinding machines for machining microscopic features. Top foil segments are circumferentially spaced relative to a rotating runner for engagement by the runner when the bearing is mounted to bearingly support runner rotation. Bump foil segments underlie and support and engage the top foil segments respectively. A thrust plate supports and engages the bump foil segments. Each top foil segment and each bump foil segment is secured only along an edge portion which is trailing relative to the runner rotation leaving an edge which is leading relative to runner rotation and a pair of side edges unsecured. Each bump foil segment includes tabs separated by slots extending from the leading edge at least partially to the secured edge portion. Each bump foil tab has substantially parallel ridges separated by flats. | 11-08-2012 |
20140169707 | THRUST FOIL BEARING - Provided is a thrust foil bearing ( | 06-19-2014 |
20140199006 | THRUST BEARING AND COMBO BEARING - The present disclosure provides a thrust bearing that includes: a damper body including a body part and protrusions axially protruding at predetermined areas on the body part with flat tops; and thrust top foils each having a contact portion that is in surface contact with the tops of the protrusions. The present disclosure provides a combo bearing that includes: a damper body including a body part having a through-hole at the center through which a rotary shaft passes, and protrusions axially protruding at predetermined areas on the body part with flat tops; thrust top foils each having a contact portion that is in surface contact with the tops of the protrusions; and a radial top foil covering the rotary shaft and disposed along the inner side of the through-hole of the damper body. | 07-17-2014 |
20140321779 | SPLIT COMBO BEARING - The present invention provides a split combo bearing including: a damper body that has a through-hole through which a rotor shaft passes and is composed of two or more first separate bodies that are axially separated; a cover that covers both axial sides of the damper body and a predetermined area of the outer circumference of the damper body and is composed of two or more second separate bodies that are radially separated to correspond to the first separate bodies; a thrust bump that is fixed to the side of the cover, which faces an impeller on a rotor shaft, is arranged circumferentially around the through-hole, and is formed by bending a thin plate with a wavy surface; a thrust top foil that is axially fixed to the outermost side of the thrust bump and is formed by bending a thin plate; and a radial top foil that is formed to cover the rotor shaft, is disposed between the outer side of the rotor shaft and the inner side of the through-hole of the damper body, has an insertion of which one end is installed in any one of gaps between the first separate bodies and the second separate bodies of the damper body, and is formed by bending a thin plate. | 10-30-2014 |
20150362012 | FOIL BEARING ASSEMBLY - The bearing assembly comprises a radial foil bearing and an axial foil bearing, a control bearing preload device for controlling stiffness of the bearing under normal operating conditions, an electromagnetic unloading device for decreasing amplitude of rotor oscillations and an unloading means for increasing the ultimate bearing load without damaging bump foils. The radial foil bearing comprises a bushing | 12-17-2015 |
20150369294 | VENTILATED AERODYNAMIC FOIL BEARING - The aerodynamic foil bearing in the form of a radial or axial thrust bearing, includes a rotor and a stator including a support designed to support, facing the rotor, a lift device including: a plurality of evenly distributed elastic foils fixed by a fixing edge to a surface of the lift device facing the rotor; rows of ventilation orifices passing through the lift device and opening between a free edge of each elastic foil and the fixing edge of the next foil, wherein the support includes a cavity having grooves extending under the rows of ventilation orifices and at least one circular groove intersecting the grooves and supplied with a stream of pressurized cooling gas to distribute same so as to cool the underside of each foil and provide a supply of fresh gas above the next foil to compensate for gas losses at the ends of the bearing. | 12-24-2015 |
20160091016 | THRUST BEARING ASSEMBLY - A hydrodynamic thrust bearing has an annular plate, a plurality of bearing foils, and a plurality of bumper foils. The annular plate has a first face and a second face opposite the first face. The bearing foils have an arcuate shape and are joined to the first face of the annular plate. The bumper foils have an arcuate and corrugated shape and are joined to the second face of the annular plate. A method of making a hydrodynamic thrust bearing includes joining the bearing and bumper foils to the annular plate with integrally-formed spacers in which each bumper foil corresponds to a bearing foil. | 03-31-2016 |
20160146248 | COMPLIANT HYBRID GAS LUBRICATED THRUST BEARING - Provided herein is a thrust bearing. The bearing includes one or more bearing pads, each with a thrust face, attached to a compliant bearing housing, a system for delivering a pressurized gas lubricant to the thrust face of the bearing pads, and a damping system that operates in parallel with the compliant bearing housing. | 05-26-2016 |
20160186799 | FOIL BEARING UNIT - A foil bearing unit includes: a first foil holder formed of a single component; a radial bearing foil mounted to an inner peripheral surface of the first foil holder; a thrust bearing foil mounted to an end surface of the first foil holder; and an inner member including: a shaft portion; and a flange portion projecting radially outward from the shaft portion. The inner member is supported in a radial direction by a fluid pressure that is generated in a radial bearing gap between a bearing surface of the radial bearing foil and an outer peripheral surface of the shaft portion, and the inner member is further supported in a thrust direction by a fluid pressure that is generated in a thrust bearing gap between a bearing surface of the thrust bearing foil and one end surface of the flange portion. | 06-30-2016 |
20160186800 | TILTING PAD THRUST BEARING AND TILTING PAD THRUST BEARING ASSEMBLY - A tilting pad thrust bearing and a tilting pad thrust bearing assembly are provided. The tilting pad thrust bearing is configured such that when a load is concentrated on only a portion of a thrust bearing because of eccentricity or inclination of a rotating shaft, associated tilting pads are tilted so that the load can be dispersed to the other tilting pads to which comparatively small load is applied, whereby the tilting pads to which the concentrated load is applied can be prevented from being damaged. Furthermore, the tilting pads can be fixed by oil supply nozzles without using a separate fastening member, whereby the size of the tilting pad thrust bearing can be markedly reduced. The tilting pads and a plate have improved structures so that the time and cost required to manufacture the tilting pad thrust bearing or tilting pad thrust bearing assembly can be reduced. | 06-30-2016 |
20160195128 | THRUST BEARING | 07-07-2016 |
20160195129 | THRUST BEARING | 07-07-2016 |
20160377119 | HIGH TEMPERATURE USE OF A SELF LUBRICATING COATING MATERIAL IN A FOIL BEARING AND PART COATED WITH SUCH A MATERIAL - High temperature use of a self lubricating coating material in a foil bearing and part coated with such a material. A material according to the disclosure includes between 50 and 90 wt % of alumina (Al2O3), as well as an oxide selected from the group consisting of titanium oxide (TiO2), chromium oxide (Cr2O3), and a mixture of these. Application to a rotor and/or a thrust disc at least partially covered with such a material. | 12-29-2016 |
384106000 | Auxiliary resilient support | 18 |
20080253704 | Journal air bearing - A hydrodynamic fluid film journal bearing assembly includes a journal sleeve having a key slot formed therein in a substantially longitudinal direction, a bump foil wrapped in a substantially cylindrical shape adjacent to the journal sleeve and having a bent end portion engaged with the key slot, an intermediate foil wrapped in a substantially cylindrical shape adjacent to the bump foil, a top foil wrapped in a substantially cylindrical shape adjacent to the intermediate foil, a first top foil cutout window formed adjacent to the bent region, and a first end tab formed at a free end of the top foil. The first end tab is wrapped with the top foil in the substantially cylindrical shape of the top foil, and extends into the first top foil cutout window to reduce skewing. The top and intermediate foils are joined at a bent region that engages the key slot. | 10-16-2008 |
20080253705 | Weight reduction for journal air bearing - A hydrodynamic fluid film journal bearing system includes a journal sleeve and one or more hydrodynamic fluid film foils positioned at least partially within the journal sleeve. The journal sleeve defines an inner diameter surface, an outer diameter surface, a wall thickness between the inner and outer diameter surfaces, and opposite first and second ends. The wall thickness of the journal sleeve is reduced at a first region located between the first and second ends, and a chamfered region is formed on the outer diameter surface of the journal sleeve between the first o-ring land and the first end of the journal sleeve. | 10-16-2008 |
20080267543 | Compliant Foil Fluid Film Radial Bearing Or Seal - A compliant foil fluid film bearing or seal apparatus includes a bushing having a plurality of peripherally separate bushing segments. The bushing has a bore defined therethrough, with a peripheral portion of the bore being defined on each bushing segment. A plurality of compliant foils is carried by the bushing, with at least one of the compliant foils being disposed on each bushing segment. A plurality of foil undersprings is disposed beneath the plurality of compliant foils. | 10-30-2008 |
20080310779 | RESTRAINED, REVERSE MULTI-PAD BEARING ASSEMBLY - A hydrodynamic fluid film bearing assembly has a stationary retaining member defining a central opening and having an inner surface lined by a foil assembly comprised of a plurality of foil subassemblies. Each foil subassembly comprises a first compliant foil, a second compliant foil, and a spring foil, and subtending a rotational segment, less than all, of the inner surface of the retaining member. The complaint foils and the spring foil of each foil subassembly are held within the retaining member in such a way that sliding travel of one compliant foil along the inner surface of the opening is in the opposite rotational direction of sliding travel of the other compliant foil and the spring foil. The foil subassemblies may be restrained from undesired movement during operation by a retention tab extending from the foil subassembly which engages a channel and recess feature formed in the retaining member. | 12-18-2008 |
20090185766 | Compliant foil-fluid bearing support arrangement - A foil-fluid bearing assembly adapted for supporting a shaft within an outer bearing housing and is adapted for accommodating angular misalignment of the rotating shaft relative to the housing. | 07-23-2009 |
20110033142 | HYBRID AIR FOIL BEARING AND METHOD OF MANUFACTURE - An air foil bearing includes a top foil, one or more orifice tubes and two or more bump foil strips disposed within a housing. The top foil is forms a substantially circular shape having one or more sets of top foil orifice holes. Each set of top foil orifice holes has at least three top foil orifice holes along a circumference of the top foil. An orifice tube is provided for each set of top foil orifice holes. The orifice tube includes a flat side having a set of tube orifice holes connected to an outer surface of the top foil. The bump foil strip is attached to the outer surface of the top foil adjacent to each side of each orifice tube. Another embodiment uses a housing with an inner surface having a curved polygonal cross-sectional shape with an odd number of curved sides. | 02-10-2011 |
20110052110 | Journal-Foil Air Bearing - A journal foil air bearing | 03-03-2011 |
20110229065 | KEYLESS/GROOVELESS FOIL BEARING WITH FOLD OVER TAB - An improved air foil bearing assembly is disclosed. The air foil bearing assembly includes a bearing housing having an axially extending bore therein and a shaft arranged within the bore for relative coaxial rotation with respect to the bearing housing. The shaft cooperates with the bearing housing to define an annular gap therebetween. A foil assembly is disposed in the annular gap, including at least one foil having at least one laterally extending tab. The tab is adapted to be received in and extend axially from the annular gap and is further adapted to be bent into frictional contact with an outer surface of the bearing housing to militate against axial movement of the foil. | 09-22-2011 |
20110243485 | DYNAMIC FOIL GAS BEARING - A dynamic foil gas bearing includes a foil group comprising a corrugated-sheet-like bump foil, a flat-sheet-like middle foil, and a flat-sheet-like top foil which are arranged successively toward the center axis of a bearing case. The top foil includes a second linkage surface joined to a second fixed surface fixed to an inner circumferential surface of the bearing case and also joined to a second rotatable shaft holding surface. The second linkage surface is provided by a curved portion of the top foil which is convex toward the center axis of the bearing case. The middle foil includes a first linkage surface joined to a first fixed surface fixed to the inner circumferential surface of the bearing case and also joined to a first rotatable shaft holding surface. The first linkage surface is provided by a bent straight portion of the middle foil. | 10-06-2011 |
20120224797 | PRE-STRESSED AIR BEARING - A pre-stressed air bearing includes: a seat member having a seat body and an adjustment section outward extending from a connection end face of the seat body along a geometrical central axis thereof by a predetermined length, an extension end of the adjustment section being slidably connected with a platform, at least one air passage being formed in the seat body, the air passage having at least one air outlet formed on a working end face of the seat body opposite to the connection end face; at least one reception section formed on the working end face in the form of a recess; at least one magnetic member received in the reception section; and a resilient section slidably disposed on the adjustment section between the seat body and the platform for providing a resilient force to keep the seat body spaced from the platform by a buffering gap. | 09-06-2012 |
20120281937 | FOIL JOURNAL BEARING APPLICABLE TO HIGH SPEED MACHINING CENTER - A foil journal bearing applicable to high speed machining and grinding machines for machining microscopic features. A single foil is secured to and supported by a hollow, generally cylindrical, housing. The foil has a length substantially equal to twice the interior circumference of the housing and a mounting feature, extending across its width, for engagement with a feature of complementary shape in the housing. One portion of the foil has a length approximately equal to one half of the foil length, and comprises a bump foil and a plurality of regions comprising groups of generally uniformly-spaced ridges and flats, the regions being separated by extended flat regions. The other portion of the foil has a length approximately equal to one half of the foil length, and comprises the top foil and is generally flat and overlies the bump foil which overlies the interior of the housing. | 11-08-2012 |
20140153850 | RADIAL FOIL BEARING - The radial foil bearing ( | 06-05-2014 |
20140169708 | RADIAL FOIL BEARING - The radial foil bearing ( | 06-19-2014 |
20140219590 | RADIAL FOIL BEARING - This relates to a radial foil bearing ( | 08-07-2014 |
20140241653 | RADIAL FOIL BEARING - The radial foil bearing for surrounding and supporting a rotary shaft includes a cylindrical top foil disposed so as to face the rotary shaft, a back foil disposed at a radially outer side of the top foil, and a cylindrical bearing housing accommodating the top foil and the back foil. Engagement-projecting portions are provided on both ends of an inner circumferential surface of the bearing housing. Engagement notches engaging with the engagement-projecting portions are formed on both ends of the back foil. | 08-28-2014 |
20150030270 | FOIL JOURNAL BEARING APPLICABLE TO HIGH SPEED MACHINING CENTER - A foil journal bearing applicable to high speed machining and grinding machines for machining microscopic features. A single foil is secured to and supported by a hollow, generally cylindrical, housing. The foil has a length substantially equal to twice the interior circumference of the housing and a mounting feature, extending across its width, for engagement with a feature of complementary shape in the housing. One portion of the foil has a length approximately equal to one half of the foil length, and comprises a bump foil and a plurality of regions comprising groups of generally uniformly-spaced ridges and flats, the regions being separated by extended flat regions. The other portion of the foil has a length approximately equal to one half of the foil length, and comprises the top foil and is generally flat and overlies the bump foil which overlies the interior of the housing. | 01-29-2015 |
20150086141 | AIR-FOIL BEARING - The present invention provides an air-foil bearing including a damper body, a front welding plate, and a front top foil for increasing durability, and which has a first bending mode. The damper body includes a front body portion, a rear body portion, and a front protruded portion protruded upward from the front body portion to have a flat protruded surface, and the front welding plate includes a front first contact portion in surface contact with a top surface of the front protruded portion and a front second contact portion which is a portion that is bent from the front first contact portion in surface contact with the front welding plate. | 03-26-2015 |
20160377114 | AIR BEARING ARRANGEMENT FOR ELECTRICALLY DRIVEN COMPRESSORS - An air foil bearing for supporting a high speed rotating assembly such as in a turbocharger, a high speed centrifugal separator or the like. The foil bearing includes at least one bump foil and at least one top foil. The top foil leading edge is bent radially outwards forming a bevel or step. This feature serves as an air guide to prevent air of the preceding pad flowing into the gap between the pads, and thence between the bump foil and the top foil, causing the top foil to bear against the rotor, causing severe wear. | 12-29-2016 |