Abstract: An auxiliary bearing for temporarily receiving rotor load when the main bearings are unable to receive rotor load. A plurality of rollers or sets of rollers are spaced circumferentially around the rotor. At least some of the rollers are movable between first radial positions which afford clearance between the rollers and the rotor and second radial positions for receiving by the rollers of rotor load. The movement of one roller toward the second radial position in response to contact therewith by the rotor effects movement of all of the at least some rollers toward the second radial positions to close the clearance and receive the rotor load. The rollers then disengage when the rotor load is again taken by the main bearings.

Abstract: A system for controlling thrust forces on a thrust bearing in a rotating structure of a gas turbine engine at designated operating points including a device for providing thrust load compensation to the thrust bearing, a control for operating the thrust load compensation device, and a sensor for detecting rotational cage speed of the thrust bearing. The sensor provides a signal to the control when the rotational cage speed of the thrust bearing drops below a specified ratio of the rotational speed for the rotating structure, the signal being indicative of an incipient skid condition for the thrust bearing. The control then causes the thrust load compensation device to provide an additional predetermined load on the thrust bearing when it receives the signal from the sensor so that a resultant load thereon is within a specified load range which extends the life of the thrust bearing.

Abstract: A bearing arrangement is provided for rotors of jet engines with a bearing, which is mounted on a rotor carrier via a bearing carrier. In the event of failure, for example if the blade of a compressor rotor breaks, damage to or destruction of the rotor carrier or of the housing should be prevented by the fact that a breaking piece, which breaks under a defined load, is arranged concentrically between the rotor carrier and the bearing carrier. In this way, the transfer of extreme radial loads to the rotor carrier or to the rotor housing enclosing it is largely avoided, provided that the rotating member has not yet come to a standstill. The bearing arrangement is particularly of interest for turbo jet engines for aeroplanes, where for example, in the case of damage to a fan-rotor blade, the effect of a destructive force of a rotor running at high speed on neighboring housing areas can be reduced.

Abstract: A racking resistant door control mechanism for securing a pivoted door employs an elongate lock rod that extends the height of the door and is journaled for pivotal movement by bearing assemblies having steel covers that enclose plastic bearing liners. The lock rod has upper and lower cam-type latch members welded to its opposite ends for engaging keeper members carried by upper and lower parts of a door frame for holding the door closed. The lock rod extends through and is welded to a steel sleeve at a location spaced a short distance upwardly from the lower latch member. If the lock rod is formed from two elongate elements instead of one, the sleeve is welded to both to aid in forming a connection therebetween. Racking resistance is provided by locating the sleeve and the bearing assemblies such that the steel covers of the bearing assemblies are held in engagement with the latch members and with opposite ends of the sleeve.

Abstract: A shopping cart wheel assembly having an anti-friction or ball bearing portion and also having a journal bearing. Under severe side loads or conditions of wear, the journal bearing takes over and prevents the wheel from moving significantly out of alignment.

Abstract: This invention is directed toward a bearing system for a rotating element, and more particularly directed toward an bearing system which provides an auxiliary bearing system if the primary bearing fails. Transfer of load from the failing primary bearing to one or more auxiliary bearings is initiated by conditions generated by the failing primary bearing such as abnormal heat generation or abnormal torque impulses. Alternately, the invention can be used to prevent primary bearing failure by transferring load to the secondary bearing system if the primary bearing is overloaded. The transfer of load is completely automatic requiring no human intervention. A signal or warning is, however, emitted by the bearing system to notify that loading has been transferred to one or more auxiliary bearings. The invention is directed toward an auxiliary bearing system for tapered roller bearings used in rail cars.

Abstract: An improved plastic knuckle pin for a coupler on a railway car and a method of making the improved plastic knuckle pin whereby the improved plastic knuckle pin has a substantially uniform material matrix and the method of making the pin increases uniformity in the material by increasing the surface cooling area which decreases air and moisture pockets in the material during the molding process.

Abstract: A fire resistant bearing compartment cover (86) for a gas turbine engine features a fluid tight outer wall (106) comprised of an axially extending, radially converging support shell (90) and an axially extending piston ring carrier (92) joined to the support shell by a circumferentially continuous fluid tight joint (104). A heatshield (110) joined to the inner end of the support shell by another circumferentially continuous fluid tight joint (118) and slidably engaging the outer end of the support shell at an expansion joint (128) defines a stagnant air cavity (112). The arrangement reduces the likelihood that any oil leaking out of the bearing compartment will accumulate and be ignited by turbine cooling air (45) which leaks into the cavity.

Abstract: The invention concerns an auxiliary bearing system with mechanical bearing elements (3, 4), the auxiliary bearing system being designed for a rotor (2) which is mounted for contactless motion in a stator (1), in particular by means of a magnetic field between the rotor and stator. The auxiliary bearing elements are fixed to the stator at a short radial distance from the rotor and become active in the event of the rotor jumping radially out of position. In order to counter counter-rotational precession of the rotor when it is supported externally by the auxiliary bearing system, and synchronous motion when it is supported internally, the auxiliary bearing elements (3, 4) are designed in such a way that they form on one side a contact surface (6) which provides external support for the rotor (2) and on the other side a contact surface (8) for internal support of the rotor.

Abstract: The axial bearing includes a first ring and a second ring. During operation of the axial bearing, the first ring rotates with respect to the second ring. Over time the foregoing rotation produces wear of the first ring; consequently, exposes layers of the first ring to the second ring. The different layers of the first ring produce variations in the coefficient of friction within the axial bearing. If the axial bearing is associated with a drive motor, then the variations in the coefficient of friction change the load on the drive motor. The change in load upon the drive motor may be monitored to indicate axial bearing wear or the need for axial bearing replacement.

Abstract: A bearing structure for an auger-type ice making machine 10 includes: an auger 17 having a helical blade 17a which rotates within a cylindrical refrigeration casing 11 so as to scrape off ice generated on the inner surface of the refrigeration casing 11 and push it up and out of the casing; a slide bearing 27 for supporting an upper shaft section 17b of the auger17; and, a press head 25 which is provided inside the upper end portion of the refrigeration casing 11 and which supports the slide bearing 27, wherein even if the upper shaft section 17b of the auger 17 and the press head 25 make an axial relative movement as a result of the scraping off and feeding-out of the ice, substantially closed first and second foreign matter trapp spaces A and B are formed in close proximity to the lower and upper ends of the slide bearing. Further, a high-hardness metal layer 17f having a thickness, for example, of approximately 0.5 mm is formed on the surface of the upper shaft section 17b of the auger 17.

Abstract: The bearing assembly for supporting and guiding a moving member includes a first bearing member and a second bearing member. The second bearing member and the first bearing member have movement relative to one another. The second bearing member includes a wearing surface in contact with the first bearing member. The wearing surface wears in response to the relative movement between the first and second bearing members. The second bearing member also includes a chamber and a wear identifier. The chamber is located behind the wearing surface. The wear identifier is within the chamber. Upon sufficient wear of the wearing surface, the wear identifier is released from the chamber onto the wearing surface.

Abstract: A bearing assembly with a temperature switch embedded in the housing and arranged so as to be responsive to the temperature within the housing. The bearing assembly includes an indicator adapted to indicate the status of the temperature switch such that when a predetermined temperature is reached in the housing, the switch will be activated and the indicator will indicate that the predetermined temperature has been reached so that bearing failure can be prevented.

Abstract: A bearing assembly for a rotating shaft includes a plurality of frangible bolts located concentrically of an axis of rotation for attaching a bearing housing radial flange portion to a support structure, each having a frangible portion located between axially spaced-apart radial flanges whereby the bearing housing flange portion is spaced-apart axially from the support structure.

Abstract: The bearing, intended to be interposed between a shaft with a median neck bordered by two ends, one of which is capped by a sleeve capable of sliding axially, and a support, includes an inner race, an outer race, a retaining ring, rolling members and a cage. At least one edge of the cage is provided with a resting element. The neck includes an abutment element such as a ramp to normally to hold the case axially fixed. Axial sliding of the cage is enabled after deformation of the resting element when the sleeve encounters particularly the cage.

Abstract: A brushless d.c. motor comprising a housing, an annular stator coil structure with the housing, a rotor concentric with the stator and comprising a body having an output shaft portion extending from one end thereof toward the forward end of the housing for connection to a mechanical load for driving the same and a permanent magnet arrangement on the periphery of the rotor body operatively associated with the stator coil structure, a first bearing near the forward end of the housing for rotatably supporting the shaft portion of the rotor and wherein there is provided a second bearing axially inwardly of the rear end of the rotor for rotatably supporting that end of the rotor and a circuit board located between the rear end of the rotor and the rear end of the housing. By virtue of the location of the second bearing a rigid and vibration free structure is provided for operation of the motor at high speed.

Abstract: A bearing arrangement for a bearing seat for a radial bearing adapted to be disposed in an acceleration-proof gyroscope, on which a brief acceleration produced forces act perpendicularly to a rotational axis of the gyroscope. The bearing seat includes a cylindrical half shell, with a longitudinal center axis of the cylinder of the half shell coinciding with a rotational axis of the radial bearing, and with an open side of the half shell facing in a direction in which the acceleration forces act on the radial bearing. An elastic element urges or biases a support ring into the half shell with a preset force, with the elastic element having a spring characteristic such that the support ring and the radial bearing may be lifted out of the half shell when a predetermined acceleration is exceeded.

Abstract: A device for detecting and monitoring damage to races (3 and receiver 24) or adjacent areas on the rings (1 and 2) in antifriction bearings. The object of the present invention is a device that will not only precisely measure the dimensions of cracks and pits in the race or in the transition between the races and the ring but will also forward the results to the processing equipment with no perforations in the ring and without cables and plugs. One or more sensors (13 and 14) are positioned between the rolling components (5) inside the antifriction bearing, whereby the signals they generate are transmitted electromagnetically to a receiver antenna (23) outside the antifriction bearing.

Abstract: A plastic knuckle pin for a coupler on a railway car which accepts bending fatigue, eliminates rust or corrosion, and reduces the coefficient of friction during opening and closing the coupler. The pin also protects the integrity of the coupler body and the knuckle to reduce coupler maintenance and further reduces the weight of the railway car and facilitates the use of a self-locking feature.

Abstract: A tolerance ring made of polymeric material arranged between a radial rolling bearing and a seating on a shaft or in the bore of a housing, wherein the tolerance ring bears against a radially directed surface of the seating on the shaft or housing bore in at least one axial direction and comprises a radially directed surface against which a bearing ring of the rolling bearing bears in the same axial direction with an end face, characterized in that the radially directed surface of the seating and the end face of the bearing ring do not overlap radially which avoids axial overloading.

Abstract: A bearing and a method for extending the life of such bearing is disclosed. The bearing is shown to include an inner ring having first and second race channels, wherein each race channel defines first and second raceways adapted for contact with loaded rolling elements. An outer ring is shown to have third and fourth race channels, wherein each race channel defines first and second raceways adapted for contact with loaded rolling elements. A plurality of rolling elements are positioned within the race channels and are preferably oriented so that the axis of rotation of rolling elements in the first race channel is uniform and the axis of rotation of rolling elements in the second race channel is uniform. A pair of ports formed in one of the rings, each port intercepting at least one of the race channels, wherein each port has a cross-sectional area sufficient to permit the re-orientation or replacement of the axis of rotation of the rolling elements without having to remove the bearing from its installation.

Abstract: A bearing assembly suitable for use in a wet or harsh chemical environment including a support housing having a bore therein and a bearing insert received in said bore, exterior surfaces of said housing and interior surfaces defining said bore having tough, durable coatings of fluorocarbon polymer to render same resistant to corrosive chemical attack during usage in the good and chemical industry and the method of making the same, and to permit said bearing insert to self-seat in said bore.

Abstract: A magnetic bearing rotating structure includes a rotor magnetically supported in a housing by a magnetic bearing. A back-up bearing arrangement is used to resist impact on the rotor, including a fixed bumper bearing for resisting a sudden impact, and an auxiliary bearing for rotatably supporting the rotor while the magnetic bearing resumes operation.

Abstract: A floating chuck having a bush movably mounted on a body is disclosed. The chuck includes a plate having four holes staggered pairwise 90 degrees apart in the periphery of the plate and serving to accommodate four axial fingers, two of the fingers being 180 degrees apart and integral with the body, and the other two fingers being integral with the bush. Each hole has a depth greater than the diameter of the fingers, to allow displacement of the plate in two intersecting directions.The plate includes openings which are regularly distributed and serve to accommodate bearings. The bearings abut two opposed bearing surfaces, one located on the body and other on the bush. The difference between the diameter of bearings and the thickness of the plate is less than the elastic deformation limit value of bearings and the bearing surfaces.

Abstract: A radial rolling bearing comprising an outer race ring in whose bore a set of cylindrical rolling elements is arranged, the rolling elements being retained from falling out inwards by an elastic retaining element inserted into the bore of the bearing and stop flanges being provided at both front faces of the rolling elements for their axial fixing, characterized in that at least one of the stop flanges is formed by a detached flanged disc which is retained in its position by an elastic retaining element.

Abstract: A product for use in a power train such as a bearing assembly, a reducer, a coupling or the like and which is suitable for use in a wet or harsh chemical environment including a housing, exterior surfaces of said housing having tough, durable coatings of fluorocarbon polymers to render same resistant to corrosion or chemical attack during usage in the food and chemical industry, and the method of making the same. A first polymer is present in a thickness of from about 0.5 to about 0.8 mill and exhibits thermoset characteristics for bonding to the housing. A second polymer is applied over the first polymer on all exterior surfaces to be protected in a thickness of up to about 4.0 mils and is bondable to said first polymer coating.

Abstract: An overhang-type starter comprising a ball bearing fixedly fitted in a front bracket; a pinion drive shaft supported by the bearing; and a pinion formed on the shaft at the front end thereof so that the pinion is located in front of the bearing at least when the pinion is moved forward, wherein a water drain hole is provided in the ball bearing support portion of said bracket at the lowermost point of the portion and communicates with the interior of the bracket.

Abstract: An oil flushing adapter includes a pair of conduits which are connected at the same point to a bearing support at opposite sides of a rotor, and then pushed apart by an extension device to force the lower ends of the two conduits into sealing contact with a pair of oil outlets. The conduits are then provided with flushing hoses, valves and strainers to sample oil at the bearings for cleanliness, and to shut off oil flow when the oil is sufficiently clean.

Abstract: A rolling contact device having a shaft adapted to be secured to an element of an apparatus, an outer ring adapted to be in rolling contact with another element of the apparatus, and rolling elements disposed between the shaft and the outer ring, includes an abutting portion provided on each shaft and the outer ring, the abutting portions on the shaft and the outer ring being opposed to each other with a small gap defined therebetween. These abutting portions are arranged such that, when an excessive radial load is applied to the outer ring, the abutting portions are brought into contact with each other to prevent permanent deformation of rolling contact portions of the device.

Abstract: A marine propulsion device is provided including a propulsion unit adapted to be mounted on a boat for pivotal movement relative thereto about a generally vertical steering axis, the propulsion unit having a propeller shaft supporting a propeller, an internal combustion engine drivingly connected to the propeller, and a corrosion protection system, which device also includes at least one bushing made of a conductive plastic to allow a path for electrical connection to the corrosion protection system to be established across the bushing.

Abstract: A compound journal airbearing having a sleeve concentric with a rotor and having an inner surface forming an airbearing space with the surface of the rotor so as to maintain the rotor surface and inner sleeve surface out of contact. The sleeve is supported at each end by the inner race of a bearing whose outer periphery is supported by contact with the interior surface of the stator housing. Pressurized air is supplied to the airbearing space by a passage leading from an air supply through the wall of the stator and sleeve to the airbearing space. The airbearing surface can be shaped to provide both radial and axial support. For this purpose, the airbearing surfaces may be either concave or convex toward the axis of the rotor. Catastrophic failure that would occur with construction of the prior art due to inadvertent contact of rotor and stator surfaces (collapse of the airbearing film) is avoided because the sleeve is able to turn when inadvertent touchdown occurs.

Abstract: Sliding layers overlays produced by cathode sputtering comprise a matrix-forming metallic material and at least one other material which is substantially insoluble in the matrix have greatly improved mechanical and corrosion resistance properties, if the insoluble material has a lower melting point than the matrix material, and if the diameters of the particles of the insoluble material are statistically normally distributed with mean x<0.8 .mu.m. Such overlays are produced with the temperature of the substrate maintained below 150.degree. C. during the sputtering process. Coating rates of >0.2 .mu.m [of layer thickness] per minute may be used informing such overlays.

Abstract: A rolling contact device having a shaft adapted to be secured to an element of an apparatus, an outer ring adapted to be in contact with another element of the apparatus, and rolling elements disposed between the shaft and the outer ring. The contact device has a projection mounted on or integrated with the shaft. The projection is so arranged that, when an excessive radial load is applied to the outer ring from the above-mentioned another element, the projection is brought into contact with the another element and reduces the load acting on contact portions among the rolling elements, the outer ring and the shaft.

Abstract: A wheel bearing, in particular for toy vehicles, which are usually subjected to strong overloads, is characterized in that, in the vicinity of each end, the wheel axle (10, not shown in FIG. 2) has both a bearing face (14, 15) with a relatively small radius of curvature and a bearing face (12, 13) with a relatively large radius of curvature substantially corresponding to the radius of the axle. The bearings with the small radius of curvature (14, 15) are elastically resilient, the bearing faces with the relatively small radius of curvature being provided in bearing plates (2, 3) which are connected with a vehicle portion (1) via elastic connecting members (4, 5). When the toy vehicle is overloaded, the axle is supported in the large bearings (12, 13) so that the small bearings (14, 15), having a very small friction under normal operating conditions, are not damaged.

Abstract: Shaft bearing assembly comprising a bearing housing having one or more rolling bearings therein, through which a shaft protrudes on at least one side, which housing is provided with an inlet opening for the supply of lubricant and an outlet opening for excess spent lubricant and seals acting on the shaft and outlet opening, characterized in that the bearing housing is provided with a temperature-and pressure-sensitive outlet valve for draining excess lubricant from the housing, which outlet valve opens at a predetermined temperature and closes when the temperature falls below that temperature.

Abstract: A plug for the wheel bearing hub assembly of a truck wheel bearing. The plug is a substantially unitary article having as a part of its construction a magnetic rod which, when the plug is in place in the hub, will lie along the axis of revolution of the wheel and project towards the wheel bearing and reside in a cup-like structure which is a part of the plug. The magnetic rod serves to collect metallic particles from the bearing lubricating fluid.

Abstract: A redundant-race bearing system incorporates a pair of ring-shaped race members. The race members are coaxial and axially spaced apart from one another. Each race member has a radial cross-section that includes a plurality of tracks. These tracks form a confining pattern that enables lateral and axial restraint.

Abstract: A clearance-free bearing bushing for universal joints which has a plurality of conical rollers located between a bearing bushing and a journal pin or the like. The rollers are pressed against their raceways by a spring element with a predetermined tension. On the side of the conical rollers facing away from the spring element, there is a thrust ring or the like, made of resilient material, which is free to move axially and which rests against the end surface of the conical rollers.

Abstract: A filtering means is provided in a data recording disk file for filtering air flowing from the region of the spindle bearings into the head/disk area of the disk file. The filtering means is mounted to the disk file frame adjacent the rotary shaft of the spindle and together with the shaft defines a narrow annular gap for the flow of a very small portion of the total air flow from the region surrounding the spindle bearings. The filtering means includes first and second ring members which have axially-directed openings and which together support filter material located between the ring members. The primary portion of the air flow from the spindle bearings passes through the axially-directed openings of the ring members and the filter material and is thus filtered before entering the head/disk area.

Abstract: A center-free large antifriction bearing consisting of two bearing races comprising rolling bearing elements disposed between them and an integrated electrical direct drive in which the rolling bearing elements are disposed on one side of the direct drive, is characterized in that the bearing races (1, 2) engage over each other at the side of the direct drive (7) opposite the rolling bearing elements (3) and have a spacing (20) which is less than the gap (21) between stator (8) and rotor (9) of the electrical direct drive (7), so that contact of stator and rotor is avoided under all operating conditions.

Abstract: A redundant-race bearing system according to this invention incorporates a pair of ring-shaped race members. The race members are coaxial and axially spaced apart from one another. Each race member has a radial cross-section that includes a plurality of tracks. These tracks form a confining pattern that enables lateral and axial restraint.

Abstract: A starter drive for cranking an engine. The starter drive has a pinion. A bushing is press fitted to the bore of the pinion. The pinion and bushing are supported for rotation and sliding movement by a shaft or sleeve. A thin film of grease is located between the inner surface of the bushing and the outer surface of the shaft or sleeve. The inner surface of the bushing has a plurality of contaminant collecting grooves. The grooves collect the contaminants to thereby prevent grease degradation and wear out.

Abstract: A bearing slipper for supporting a component of a matchplate mold-making machine for back and forth sliding along an elongated rail. The slipper comprises a rigid mounting block having one face covered wholly or partially by pad means made of tough anti-friction material. Resiliently yieldable elastomeric strips are compressed in grooves at opposite end portions of the block and urge the end portions of the pad means outwardly so as to form protruding fins which wipe sand from the rail as the slipper moves back and forth along the rail.

Abstract: A downhole motor and bearing assembly has a tubular housing with an inlet and outlet for flow of drilling fluid. A stator is supported in the housing and a rotor is supported for rotary movement in the stator. An open tubular shaft is connected to the rotor for rotary movement in the housing. The bearing assembly has bearing members in the housing in fixed spaced relation and other bearing members cooperable therewith. Sleeve members positioned in the housing support selected bearing members in a fixed spaced relation. Other sleeve members positioned on the shaft support the other bearing members in a fixed spaced relation. The sleeve members are interchangeably positioned in the housing and on the shaft to position the bearing members in selected interchangeable relation according to the need for the bearings to support a load in a forward or reverse direction. A radial sleeve bearing is supported in the housing in a bearing relation to the shaft in a position forward and backward of the bearing assembly.

Abstract: Means for determining the state of lubrication in surfaces lubricated by a lubricant and rolling or sliding with respect to one another, provided with a unit for generating a signal dependent upon the capacitance between the lubricated surfaces, characterized by an operating circuit connected to the unit which, in response to the signal dependent upon the capacitance, emits a second signal which is dependent in accordance with a non-linear, for example, exponential, function upon the capacitance between the lubricated surfaces such as that one and the same relative variation in the thickness of the lubricant between the lubricated surfaces results in a fairly great signal variation in the event of decreasing thickness, the second signal being supplied to an integrator which integrates the second signal over an integration period displaced in time and the output signal of which indicates the state of lubrication.

Abstract: A bearing arrangement which is to be used for supporting a rotatable shaft used in a system employing a pressurized medium at a pressure which is partially dependent on the speed of rotation of the shaft includes a main bearing sleeve mounted on a support and surrounding the shaft. The working medium is supplied between the shaft and the bearing sleeve to fully support the shaft in the bearing sleeve when the pressure of the working medium exceeds a predetermined value. The bearing arrangement further includes at least one, but possibly more than one, auxiliary bearing including a split bearing ring which has a conical outer circumferential surface and a stationary outer bearing ring surrounding the split bearing ring and having a conical inner ramp surface.

Abstract: An apparatus is provided to rotatably support a shaft having an annular worn portion and unworn portions disposed adjacent to axially opposite ends of the worn portion. The apparatus includes a plurality of bearing elements. The bearing elements engage the unworn portion of the shaft at a location adjacent to the worn portion of the shaft. A sleeve encloses the bearing elements and the worn portion of the shaft. Opposite ends of the sleeve are closed by seals which engage unworn portions of the shaft.

Abstract: Serial safety bearing assembly includes two concentric bearing sets and an actuatable device for selectively switching to engage either the inner or the outer of the two concentric bearing sets upon failure of one set or to alternate to first one set and then the other set thus to prolong the working life of the two concentric bearings.

Abstract: A bearing assembly for use with a spindle and featuring a rotatable preload actuator having differential thread portions in mesh with threaded sections of a selected race adjustment member to selectively vary the loading of the bearing. Drive means is provided for rotating the preload actuator to control actual bearing load.

Abstract: A bearing device assembly includes a water pump shaft supported by a rolling bearing, and a .[.plulley.]. .Iadd.pulley .Iaddend.seat press fitted to one end of the water pump shaft. A recess or recesses in the form of a ring-shaped groove, a spiral-shaped groove, and a groove extending in the axial direction of the shaft, or the like are formed in at least one of the peripheral surface of the one end portion of the water pump shaft and the inner surface of the pulley seat. The recess prevents formation of an oil film on the fitting surface between the water pump shaft and the pulley seat at the time of press fitting the pulley seat, and also allows the remaining oil on the fitting surface to flow into the recess.