Abstract: An aerostatic bearing includes a slider that is guidable on a guide surface. The slider has an inner, conical sliding surface of an inner air bearing facing the guide surface with a central compressed air supply. The conical sliding surface is attached by first joints to the central compressed air supply and by second joints to a base of the slider arranged on a side of the slider facing away from the guide surface, such that a cone angle of the conical sliding surface is variable. The conical sliding surface is surrounded by an annular sliding surface of an outer air bearing having an annular compressed air supply.

Abstract: A tilting-pad bearing (1) includes a sleeve (5), a plurality of tilting pads (4), which are arranged in the sleeve (5), wherein an associated spring element (3) is provided between the sleeve (5) and each tilting pad (4), wherein the spring element (3) has at least two sections having a stiffness of different magnitude as a result of varying the thickness of the cross-section (8, 10) of the spring element (3) in the width direction and/or longitudinal direction of the spring element (3).

Abstract: The present invention relates to an air foil journal bearing including a bearing housing having a hollow, in which a rotor is arranged, and a pair of top foils with different lengths formed inside the hollow, thereby enhancing assemblability since the lengths are reduced and increasing stability at the time of high speed rotation through position adjustment of a slot to which the top foils are inserted.

Abstract: A foil bearing includes an outer member (11), and a plurality of foils (13) that are mounted to an inner circumferential surface (11a) of the outer member (11) and directly face the inner circumferential surface (11a) of the outer member (11) in a radial direction without interposition of another member (such as back foils). The foils (13) each include: holding portions (13a, 13b) that are formed at both circumferential ends and held while in contact with the outer member (11); and a body portion (13c) that is formed circumferentially between the holding portions (13a, 13b) and has a bearing surface (A). At least an end portion on one side in a circumferential direction of the body portion (13c) is raised radially inward with respect to the inner circumferential surface (11a) of the outer member (11).

Abstract: A compliant fluid-film riding taper bearing is configured to include a rotor and a stator for supporting a rotating shaft. The rotor is configured as a rotating monotonously tapering body of revolution having an axis of symmetry and an external tapering surface. The stator has a longitudinal axis and an internal surface disposed in coaxial and conformal alignment with the external tapering surface. The stator is preloaded against the external tapering surface, and is pliantly supported to respond to a distribution of biasing forces and to permit matching elastic and resilient adaptation thereof conformal to deformation of the tapering rotor.

Abstract: A journal foil bearing includes a bearing retainer having one slot configured to receive a top foil leading edge tab and another slot configured to receive a top foil trailing edge tab. A backup support structure, integral to the bearing retainer, extends between and is at least partially defined by the slots. The retainer is configured so that, during operation, the trailing edge tab contacts the support structure at a position close to the friction force, thereby minimizing top foil bending stress and improving bearing strength.

Abstract: Provided herein is an apparatus, including a stationary component and a rotatable component; a fluid between the stationary component and the rotatable component; a limiter shoulder of the stationary component; a flanged limiter bushing of the rotatable component; and a separating means for separating the limiter shoulder and the limiter bushing, wherein the separating means comprises the fluid.

Abstract: Centrifugally decoupling mechanical bearing systems provide thin tensioned metallic ribbons contained in a support structure. This assembly rotates around a stationary shaft being centered at low speeds by the action of the metal ribbons. Tension springs are connected on one end to the ribbons and on the other end to the support structure. The ribbons pass through slots in the inner ring of the support structure. The spring preloading thus insures contact (or near-contact) between the ribbons and the shaft at rotation speeds below the transition speed. Above this speed, however, the centrifugal force on the ribbons produces a tensile force on them that exceeds the spring tensile force so that the ribbons curve outward, effectively decoupling them from mechanical contact with the shaft. They still remain, however, in position to act as a touchdown bearing in case of abnormally high transverse accelerations.

Abstract: 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.

Abstract: A bearing housing of a hydrodynamic foil bearing assembly has an opening for allowing flow of a fluid into the bearing housing. Also included in the a hydrodynamic foil bearing assembly is at least one foil having at least one opening and defining a cylindrical hollow space for receiving a rotating shaft therein. Fluid is supplied from the opening of the bearing housing to a gap between the at least one foil and the rotating shaft through the at least one opening of the at least one foil to form a pressurized fluid film therein.

Abstract: 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.

Abstract: 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.

Abstract: A journal foil air bearing 5000 according to the present invention is provided with one top foil 300 along an inner periphery of a hole 18 of a bearing housing 10. Bump foils 20c and 20d are installed at the inner periphery of the hole 18 of the bearing housing 10 where they are distanced from each other. Both ends of the top foil 300 form bent portions 308a and 308b and the bent portions 308a and 308b are mounted in a slot 414 of a slot body 40 mounted in a slot 140 provided in the inner periphery of the hole 18 in the bearing housing 10 and the top foil 300 is elastically movable therein.

Abstract: 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.

Abstract: 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.

Abstract: A journal foil bearing comprising a retaining member having an inner surface which defines a shaft opening within which a rotatable shaft is receivable for rotation; and a foil assembly affixed to and lining the inner surface and comprising a plurality of foil sub-assemblies each subtending a circumferential segment, of the inner surface.

Abstract: A multi-lobe foil gas bearing which can accomplish high accuracy rotation by means of a stable fluid lubricating film without being affected by a rotational position or a driving system of a journal at the time of starting is provided. Since two foils are arranged with different phases in a circumferential direction so that each vertex part of one of the two foils is positioned in an arc surface part of the other foil in a plan view seen from a shaft end of the journal, a part having low rigidity and a part having high rigidity of the multi-lobe foil gas bearing compensate each other to eliminate a local part having low bearing rigidity. As a result, it is possible to eliminate a phenomenon such as moving or leaning of the journal at the time of starting, while the fluid lubricating film can exist over the entire circumferential surface of the journal to keep stable high accuracy rotation of the journal.

Abstract: A fuel-cell compressed-air supplying device 6 includes a centrifugal compressor 12 provided in a casing 11, and a bearing device 14 for supporting a rotation shaft 13 of the compressor 12. The bearing device 14 includes a pair of radial foil bearings 21 and 22 provided coaxially with the rotation shaft 13 for supporting the rotation shaft 13 in the radial direction, and an axial magnetic bearing 23 facing to the rotation shaft 13 in the axial direction for supporting the rotation shaft 13 in the axial direction. Axial electromagnets 24 and 25 of the axial magnetic bearing 23 are integrated with the radial foil bearings 21 and 22, respectively.

Abstract: A multi-lobe bearing is of simple construction such that a foil sheet in the form of a closed loop is arranged on a journal shaft by joining both ends of two sheets together, with a bearing gap therebetween and filling a viscoelastic body in an air gap between the foil sheet and an inside of a bearing holding member, whereby the bearing gap between the journal shaft and the foil sheet is configured to be liable to generate a fluid pressure. Also, the bearing is simply constructed to be made easy in assembly, and in particular, appropriate in bearing the journal shaft having a small diameter.

Abstract: A high load capacity hydrodynamic journal foil bearing system is disclosed, which comprises a top foil and a plurality of undersprings. Preload forces are transferred from the undersprings to internal circumferential compressive forces within a top foil, resulting in low preload forces against the shaft, allowing the shaft to expand at high speeds without increasing the preload forces or overloading the fluid film. One underspring may have a different spring rate than another underspring. The top foil may be normalized to shaft shape and dimensions. These features may be accomplished with using less mechanical parts than other journal foil bearing system designs.

Abstract: The disclosed invention relates to a foil type fluid bearing including a foil assembly. The foil assembly supports a journal within a stationary retaining member and includes a top foil that is disposed on the inside in the radial direction, three mid foil layers that are disposed outside the top foil, and corrugated bump foils disposed outside the mid foil layers. When the journal is radially displaced, a large frictional damping force is generated between the three mid foil layers, thereby enhancing the function of supporting the journal. Moreover, layering the three mid foil layers can increase the rigidity against a load in the radial direction, thus preventing the top foil from deforming in a wavelike manner and thereby allowing the function of the foil type fluid bearing to be reliably exhibited.

Abstract: A rotary bearing, in particular for optical measuring technology, such as measuring the image fidelity of an optical element, with an aperture and central axis, is provided with an outer mounting part (1) and with an inner bearing part (2). The inner bearing part (2) is connected to a drive output part (6), which can be rotated with respect to the outer mounting part (1) about the central axis. The outer mounting part (1) and the inner bearing part (2) lie in a common plane and are interconnected by articulated joints. The inner bearing part (2) is divided into a plurality of segments, which are respectively connected to the drive output part (6) via resilient articulated joints.

Abstract: A receiver in a communication system is coupled to a transmission channel for receiving communication signals transmitted over a transmission channel. The receiver includes signal receiving electronics for receiving communication signals directed to the receiver. The receiver also includes a controller, responsive to the receipt of a communication signal by the signal receiving electronics, to provide an enunciator enable signal, and a clock signal generator for generating a clock signal. The receiver further includes an enunciator coupled to the clock signal generator, for producing an electronic sound signal. The enunciator includes a volume control module for receiving a first periodic signal and providing a volume control signal. The enunciator also includes a divider for receiving the clock signal and providing a corresponding output signal having a frequency corresponding to the frequency of the clock signal frequency divided by a divider value.

Abstract: A bidirectional radial bearing for rotatably supporting a rotor or shaft may include a bushing with an interior bore having one or more antirotation retainers that may be equally spaced and extend the axial length of the interior bore. The interior bore of the bushing may be formed into a plurality of lobes. The interface of adjacent lobes and a compliant foil and a foil underspring form symmetrical converging wedges. The combination of the lobed bore and the compliant foil and foil underspring establish symmetrical converging wedges surrounding the rotor or shaft. In another aspect of the present invention, a single compliant foil may combine with the lobed bore and one or more foil undersprings to form two or more symmetrical converging wedges. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure.

Abstract: A receiver in a communication system is coupled to a transmission channel for receiving communication signals transmitted over a transmission channel. The receiver includes signal receiving electronics for receiving communication signals directed to the receiver. The receiver also includes a controller, responsive to the receipt of a communication signal by the signal receiving electronics, to provide an enunciator enable signal, and a clock signal generator for generating a clock signal. The receiver further includes an enunciator coupled to the clock signal generator, for producing an electronic sound signal. The enunciator includes a volume control module for receiving a first periodic signal and providing a volume control signal. The enunciator also includes a divider for receiving the clock signal and providing a corresponding output signal having a frequency corresponding to the frequency of the clock signal frequency divided by a divider value.

Abstract: A multi-segment radial bearing including a bushing with an interior bore having a plurality of anti-rotation retainers which are equally spaced and extend the axial length of the interior bore. The generally T-shaped retainers divide the interior bore of the bushing into a like plurality of lobes, with each lobe having a compliant foil and a foil underspring disposed between adjacent generally T-shaped retainers.

Abstract: The present disclosure concerns resiliently mounted pad type journal bearings. Compensation for lateral movement of a journal due to shifts in loading is achieved by varying the profile of the hydrodynamic wedge between one or more of the bearing pads and the journal. Journal bearings according to the present invention are appropriate for either mono-directional or bi-directional journal rotation.

Abstract: A compliant foil hydrodynamic fluid film radial bearing is disclosed which is comprised of a cylindrical rotor, fluid foil(s), spring foil(s), and a foil retaining cartridge. The cartridge has circumferentially undulating cam shaped lobes or has circumferential ramps and joggles that induce the spring and fluid foils to form converging fluid-dynamic wedge channels which compress and pressurize the process fluid and diverging channels which draw in makeup fluid. A spring foil is formed as a thin, flat sheet having chemically etched slots of a pattern that causes cantilever beams to stand erect and function as springs when the foil is bent to install in the cartridge. When a single foil is used in lieu of a plurality of foils made up of segments, that foil is preloaded away from the rotor by bending stresses in the foil that are induced when the foil is bent to fit into the cartridge.

Abstract: The invention concerns an aerodynamic plain bearing for shafts (1) rotating at high speeds, with a bearing housing (4) having a cylindrical bore (3) and with a tangentially attached, elastic and damping structure (2) having segments (2" or 2a), which is supported at a plurality of circumferential points (2') in bearing housing (4) and forms a multiple converging running gap (6) with shaft (1) and damping gap (5) with bearing housing (4). A minimum number of components are used and radial installation space is also minimized. Segments (2" or 2a) of the structure are thin-walled, elastic sleeve sections with a uniform or profiled wall thickness and a low coefficient of friction, as from titanium nitrite, and simultaneously act as damping and spring elements.

Abstract: Hydrostatic journal bearing assemblies are described which include a housing member having a generally circular bore therethrough, a journal bearing member having a bore therethrough for the support of a shaft, the journal bearing member being located within the bore of the housing wherein the journal bearing member comprises at least one generally annular sleeve portion, an increased diameter flange portion at the axially inner end of the journal bearing member, the journal bearing member being sealed against the ingress of pressurized fluid into a space between the bore of the housing member and the outer surface of the annular sleeve portion, the annular sleeve portion being pivotally supported intermediate the axially outer end of the journal bearing member and the flange portion and the bearing member having means for access of a source of pressurized fluid between the bore of the journal member and the shaft to be supported.

Abstract: An adjustable tension foil bearing for a rotatable shaft comprises a bearing housing for the support of a plurality of foil carriers which carry a like plurality of foil elements. The foil carriers are rotatable to effect tensioning of the foil elements.

Abstract: Spring-loaded rollers for a mold have a sealed axle mount which passes through the roller into a supporting portion of the seats in the platen to prevent the roller from rotating, twisting or otherwise moving in the seat in the roller assembly and in the mold. The roller assembly is easily removed from its seat through the use of a removal device cooperating with screw threads in the roller. A plurality of rollers are used to permit a mold to be easily moved into and out of position in a press. The mold is thus mounted in position since the rollers limit the ability of the mold to move laterally. The seals are dished TEFLON disks which overfit the axle and interfit either against the sides of the roller or within slots cut circumferentially on either side of the roller. The walls of the slot may be undercut and/or otherwise shaped. The invention makes it very easy to move the heavy molds into and out of the press thereby reducing operator fatigue.

Abstract: A hydrodynamic bearing is disclosed which is designed to work in a fluid. The hydrodynamic bearing is formed with a central section of the load carrying surface that is more compliant so that it will deflect under load and form a pressure pocket of fluid to carry high loads.

Abstract: An aerostatic axial thrust bearing comprising a movable part and a stationary part, one of said parts being constructed as a cup-shaped member having an upright wall, a closure member and a bottom which faces the other bearing part and which is formed by a diaphragm having a central opening. The side of the diaphragm facing the other bearing part is shaped so that the bearing gap between the two parts becomes narrower from the central opening in the diaphragm towards its outer edge, and the cup-shaped member having an inlet for the admission of a gaseous pressure medium to the space inside the cup-shaped member. The diaphragm is connected to the upright wall of the cup-shaped member at a location which is situated between the central opening and the outer edge of the diaphragm.

Abstract: A multi-segment radial bearing including a bushing with an interior bore having a plurality of anti-rotation retainers which are equally spaced and extend the axial length of the interior bore. The generally T-shaped retainers divide the interior bore of the bushing into a like plurality of lobes, with each lobe having a compliant foil and a foil underspring disposed between adjacent generally T-shaped retainers.