Abstract: The bearing shell of a multiple-face hydrodynamic radial plain bearing has an internal surface which is composed of several identical arcuate sections whose radii of curvature slightly exceed the radius of curvature of the rotary component within the shell. The central portion of each section is nearer to the external surface of the rotary component than the other portions, and each such central portion has a hydrostatic pressure chamber receiving the liquid which is conveyed by a fluid flow machine wherein the bearing shell is used or a different liquid, such as a lubricant. The axial length of each chamber is between 40 and 80 percent of the length of the bearing shell, and the width of each chamber is between 20 and 80 percent of the length of the respective section, as considered in the circumferential direction of the shell.

Abstract: Method for stabilizing a glide shoe loaded against an inner face of a revolving mantle of a roll adjustable in zones. The glide shoe is supported by an articulated joint on a piston which loads the glide shoe with adjustable pressure. In order to ensure lubrication of the glide face between the glide shoe and the inner face of the roll mantle, within an area of a front edge of the glide face as seen in a direction of rotation of the roll mantle, a shifting and/or steepening of compression pressure applied by the glide shoe through lubricant onto the inner face of the roll mantle is produced by means of a wedge space within the front edge of the glide face, said shifting and/or steepening in turn generating a moment having a direction opposite to a direction of a moment produced by frictional force of the glide face of the shoe. The thickness of the lubricant film is increased by this moment in the area of the front side of the glide face.

Abstract: An oil film bearing for rotatably supporting the journal surface of a rolling mill roll neck on a hydrodynamically maintained oil film. The bearing includes a bushing adapted to interrupt the load carrying continuity of the oil film and to subdivide the load zone into compound pressure zones.

Abstract: The invention relates to a journal gas bearing body which is formed with a cylindrical bore to rotatably support therein the journal part of a shaft and gas introducing holes radially opening into the cylindrical bore. The bearing body is made of a metal, and only in opposite endmost sections of the cylindrical bore the cylindrical inner surface defining the bore is provided by a very hard and wear resistant material, which is either a ceramic or a cemented carbide. It is convenient to provide the hard inner surface in each of said endmost sections by insertion of a hollow cylindrical bushing formed of a ceramic or a cemented carbide. The gas introducing holes are all located lengthwise inward of said endmost sections to avoid boring through the ceramic or cemented carbide layer. Accordingly the bearing body can easily be manufactured without significant increase in the working cost.

Abstract: A fixed shape hydrodynamic journal bearing 10 is provided having a plurality of pads 18, each pad having a peak 22, a trough 20, and a curve 24 connecting the peak and the trough, the curve being defined by the equation: h=r+s (1-.theta..sub.1 /.theta..sub.2).sup..alpha..

Abstract: The invention disclosed herein relates to an inherent variable fluid restrictor for regulating fluid pressure in a hydrostatic bearing. The inherent variable fluid restrictor is comprised of a restrictor land surrounding a fluid supply port, a collection gallery around the restrictor land and containing a fluid cross-feed port, an isolation land around the collection gallery, and a bearing pocket around the isolation land. A flow channel connects the fluid cross-feed port to a diametrically opposed bearing pocket.

Abstract: A control system for bypassing critical speeds in a high speed rotating turbine shaft supported by multiple journal bearings which includes pairs of apertures disposed in each bearing seat. The pairs of apertures are linked by fluid vent lines having valves disposed therein. The valves are responsive to vibration in the shaft and serve to vent lubricant between opposing apertures in order to vary the stiffness and hence the spring rate of the bearing as the shaft approaches critical speed.

Abstract: A hydrostatic bearing is provided between two relatively movable members. Opposing sensing and bearing pads extend into either member and face the other member. These pads communicate with one another. An inlet orifice is defined between the members and extends from a fluid source to the sensing pad. An outlet orifice is defined between the members and extends from the bearing pad to the fluid return. The areas of the inlet and outlet orifices vary reciprocally in the sense that as one area increases, the other area decreases. The bearing exhibits reduced flow characteristics when one member moves axially and/or radially relative to the other member.

Abstract: A centrifugal pump having a shaft supported by a hydrostatic bearing to which energizing fluid is supplied by the pump itself. Upon failure of the energizing fluid supply, an auxiliary source supplies the energizing fluid. A one way valve operates in response to fluid pressure to permit the energizing fluid, either from the pump or the auxiliary supply.

Abstract: A hydrostatic bearing 20 for a rotatable shaft 18 of the type in which lubricating fluid is fed through orifices 12 in the bearing to a plurality of recesses 14 and finally to a land 16. Land 16 comprises grooves 22 directed toward recesses 14 in the direction of the shaft's rotation so that lubricating fluid is pumped back toward recesses 14.

Abstract: A vibration-controlling bearing for controlling vibration developing in a rotary shaft supported in a housing of a rotary machine including a bearing member of a cylindrical shape interposed between an outer peripheral surface of the rotary shaft and an inner peripheral surface of the housing and spaced apart therefrom by respective gaps. A dynamic pressure is generated between an inner peripheral surface of the bearing member and the outer peripheral surface of the rotary shaft. Communicating ducts are formed in the bearing member for transmitting a portion of the dynamic pressure generated to a gap between the outer peripheral surface of the bearing member and the inner peripheral surface of the housing.

Abstract: A fluid bearing in which parts of the bearing land are free to move relative to the bearing member on which they are mounted, so that in use the speed of the relative movement of the two confronting surfaces that define the bearing clearance is less than the speed of relative movement of the bearing members themselves. This reduces the power losses due to shearing effects within the thin film of fluid continuously passing through the bearing clearance in contact with these confronting surfaces. The invention applies particularly to rotary bearings of journal and end-thrust type, in which the moving lands may be ring-shaped units, mounted for rotation about the bearing axis and supported by relatively friction-free bearings--for instance gas bearings--on the bearing member in which the bearing recess is formed.

Abstract: An improved air metering nozzle assembly for air bearings wherein the metering orifice is formed in a flat disc separate from air supply elements and is readily removable and replaceable.

Abstract: The invention relates to a hydrodynamic bearing assembly in which a relatively broad bearing is divided into two bearings (2, 3) placed axially side by side. Both bearings are connected together to an inner bearing member (1) which is mounted to swivel universally over a spherical sector surface (16) in a cylindrical bore (18) of a surrounding housing. Between the bearing surfaces of both bearings (2, 3) there is provided in the bearing bore (6) a flowing fluid medium passage shared by the bearings, such as an annular groove (10). Through this passage the outlet flow area for the flowing fluid medium is doubled and length of the flow path in the bearing bore (6) reduced by one-half. Concurrently, a more perfect load pressure equalization is achieved on both bearings (2, 3) owing to the ball-joint-type universal bearing arrangement between the inner bearing member (1) and the housing (20).

Abstract: In a hydrostatic bearing apparatus, a bearing bushing is formed at its internal surface with a plurality of circumferentially separate fluid pockets, into which pressurized fluid is conducted via respective throttle elements for rotatably supporting a spindle received in the internal surface, by means of static pressure generated in each of the fluid pockets. The bearing surface is further formed with a plurality of exhaust grooves, each of which extends in the axial direction of the bearing bushing between contiguous two of the fluid pockets. Pressurized fluid cooled by a cooler device is supplied to flow along the exhaust grooves in the axial direction of the bearing bushing, so that heated pressurized fluid in each fluid pocket is prevented from being carried by rotation of the spindle into another fluid pocket circumferentially next thereto.

Abstract: This disclosure is concerned with improvements in hydrostatic guide bearings of a shaft in which the journal of the shaft takes on the form of a sleeve and the bearing comprises a first and a second set of chambers placed within concentric races respectively opposite the internal and external walls of the journal.

Abstract: A rotary type electrostatic spray painting device is comprised of a housing and a rotary shaft. The housing has an end plate having a circular hole, and the rotary shaft has a front end which passes through the circular hole. The diameter of the front end of the rotary shaft is slightly smaller than that of the circular hole thereby permitting air to pass therebetween. A spray head is fixed onto the tip of the front end of the rotary shaft at a distance from the end plate. Paint is fed onto the cup shaped inner wall of the spray head. The rotary shaft is supported by a single thrust air bearing and a pair of radial air bearings which are arranged near the rotary shaft at a hollow portion thereof. An electrode, continuously contacts the rear end of the rotary shaft to electrically connect a negative high voltage at the housing of the device to the spray head via the rotary shaft.

Abstract: A fluid bearing for rotatably supporting a rotary shaft. A plurality of pressure generating zones are defined on a bearing surface of a bearing member in a circumferential direction. Each of the pressure generating zones comprises a pair of axially spaced fluid pockets, at least one raised land formed in at least one of the pair of fluid pockets, a passage member for fluidically communicating the pair of fluid pockets with each other, a throttle member connected to the fluid pockets for admitting pressurized fluid therein and an exhaust port formed on the raised land for discharging pressurized fluid. An exhaust member is formed on the bearing surface outside the pressure generating zones for discharging pressurized fluid.