Abstract: A bearing arrangement comprised of a substrate having a plurality of self-lubricating polyimide graphite-fiber reinforced composite bearing members secured to provide a bearing surface. The bearing arrangement being well suited for use under harsh conditions, including high temperatures, high impacts, and large loads.

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 arrangement comprised of a substrate having a plurality of self-lubricating polyimide graphite-fiber reinforced composite bearing members secured to provide a bearing surface. The bearing arrangement being well suited for use under harsh conditions, including high temperatures, high impacts, and large loads.

Abstract: A rolling/sliding member for use in conditions of rolling and/or sliding contact with a mating member opposed to the rolling/sliding member under the following conditions;(a) the rolling/sliding member are formed with a large number of fine protrusions and depressions in at least the surface area which comes into contact with the mating member,(b) the total volume per unit area of the fine depressions is in the range of 5.times.10.sup.-8 to 5.times.10.sup.-7 cc/mm.sup.2, and(c) the average volume of the fine depression is 10 to 100 .mu.m.sup.3.

Abstract: A solid waste material comminuting system having a electric motor for providing rotary motion, a pair of cutter stacks with cutter elements of one stack interleaved with cutter elements of the other, and gear means to transmit the rotary motion of the electric motor to counter-rotate cutter elements of one stack with cutter elements of the other. Each of the cutter stacks comprises a central shaft journaled for rotation and a bearing module at each end of the central shafts. Each bearing module comprises an end housing, and a pair of insertable pre-assembled bearing assemblies mountable in each of said end housings. One bearing assembly has a thru-hole for journaling a first shaft for rotation and a second bearing assembly has a thru-hole for journaling a second shaft for rotation.

Abstract: A slide bearing comprising: an outer cylinder in which two ends of a cylindrical section made of thin metal plate are respectively provided with a flange and an annular side wall section formed by bending inwardly and perpendicularly; and either a plurality of plate-like bearing elements or a single bearing element both provided with an opening having convexes and concaves in the center so that a shaft to be supported may be supported by the convexes in a state of face contact; the concaves of the bearing elements being filled with a lubricant.

Abstract: A dispersion of hard, wear-resistant particles such as aluminum oxide is embedded within a shaft-engaging surface of a bearing such that the service life of a shaft and bearing assembly is extended. The relatively hard aluminum oxide particles exert a polishing action on the shaft surface to improve the wear resistance and seizure resistance of the bearing and shaft system. A tumbling barrel, vibratory bowl, air jet, brush or similar apparatus can be used to apply and embed tumbling media particles within the shaft-engaging surface. During the application period, aluminum oxide particles are transferred to the bearing member surfaces by the sliding, rubbing contact between the abrasive bodies and the individual bearing members.

Abstract: Strips of polytetrafluoroethylene (i.e., Teflon) are interposed, equally spaced apart, between the journal and sleeve, and journal and collar of a bearing assembly to provide lubrication thereat. The Teflon strips are fibrous and porous, and compressibly collapsible therefor, to insure that thermal expansion of any one thereof will not unduly load the bearing assembly. The bearing material has surface voids in which to trap and retain the Teflon which is wiped onto the contact surfaces.

Abstract: A sliding bearing of the type comprising a backing layer; an intermediate layer provided with internal peripheral grooved portions crosswise the bearing length and longitudinally spaced from each other; optionally, a diffusion or bonding layer on the grooved portions; and a sliding layer of a material softer than the material of the intermediate layer and filling the grooved portions. According to the invention, the grooves of the grooved portions have a depth and longitudinal spacing with uniform or variable dimensions, wherein at least one of the characteristics of depth and spacing is mandatorily variable. This design allows a selective distribution of harder material and softer material on defined portions of the bearing as a function of specific operating requirements.

Abstract: An automatic transmission for use in an automotive vehicle is comprised of an oil pump assembly adapted to discharge hydraulic oil as operating oil for the automatic transmission. The oil pump assembly is disposed around a stator shaft connected to the stator of a torque converter. The oil pump assembly includes a pump element drivably disposed in a pump housing and covered with a pump cover secured to the pump housing. The pump cover is made of light alloy and integrally formed with a boss inside which the stator shaft is fitted. The boss protrudes in a direction opposite to the pump housing. Additionally, a rigid ring is fitted on the outer periphery of the boss, thereby increasing the rigidity of the boss and preventing the outer peripheral section of the boss from being worn.

Abstract: An improved drill bit seal arrangement, including a seal ring having a boronized outer annular surface which is fabricated separate and apart from the journal bearing structure of the drill bit arm. The seal ring boronized surface is polished to define a smooth non-abrading surface for the elastomeric seal. The seal arrangement enhances the wear resistance of the seal between the drill bit arm and the cutting cone, thereby increasing the life span of the drill bit.

Abstract: A breech lock mechanism for automatic firearms, in particular, a rigidly closing breech lock mechanism with loosely located support flaps in its breech head which will slide along an associated and complementary formed latching and unlatching component into its rearward latching position during the opening of the breech lock mechanism. The surfaces of the support flaps which face towards the latching and unlatching component are at least partly provided with a lubricating layer whose hardness is different with respect to the complementary latching and unlatching component.

Abstract: Polycrystalline diamond wear surfaces in bearing structures are maintained at temperatures that prevent thermal degradation in spite of exceptionally high loads. This temperature control is accomplished by segmenting the diamond wear surface to provide interrupt channels through which the energy build-up at the diamond wear surface is maintained below the thermal degradation level. Cooling fluid may be caused to flow through the interrupt channels, the higher the velocity of fluid flow around the diamond bearing surface, the greater the cooling effect.

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 bearing for a rotary cone for a rock bit is disclosed. The bearing consists of a multiplicity of small synthetic diamond particles nested within a matrix base, each with an exposed flattened surface to form the bearing. The diamond particles are strategically positioned on a bearing surface and secured within the matrix base. A substantially identical synthetic diamond bearing is concentrically positioned adjacent to the first bearing to form the bearing package.

Abstract: A unitary sleeve mounts both thrust and radial bearings, the radial bearing being fabricated of macro-crystalline tungsten carbide powder and cemented tungsten carbide cobalt chips in a recessed area on an elongated extension and the thrust bearing comprising a ring carrying diamond inserts residing in through holes, the ring and inserts being brazed on a hub at the thrust head end of the extension.

Abstract: A bearing member of a ring-shaped lubrication member made of a resin material is arranged between a ring-shaped stator having an excitation coil and pole teeth and a ring-shaped magnet rotor arranged inside of the stator, and the stator, magnet rotor and the lubrication member are held in union by holding members to form a motor.

Abstract: A slider bearing assembly has a bearing housing having a bore centered on an axis and having an inside bore surface and a uniform composition plain bearing liner in and coaxial with the bore and having an outer surface delimited by two axially oppositely directed end faces, an axial middle region between the end faces, and an inner surface centered on the axis. The bore and outer surfaces are in mutual surface contact in a contact area and normally directly engage each other without the interposition of a liquid lubricant. The bearing liner is fixed in the housing against any movement relative thereto other than micromovements. A movable part has a journal centered on the axis and radially outwardly confronting and normally engaging the inner liner surface. This movable part is nonradially movable relative to the liner and housing, that is it can only move axially and/or angularly relative to the liner. Drainage channels formed in at least one of the surfaces at the contact area extend to the axial end faces.

Abstract: A jib crane system comprising a horizontally extending load beam rigidly attached to the upper end of a vertically extending mast. The lower part of the mast is positioned inside a hollow structure such as a pipe and is rotatably associated therein, and spaced from the inside surface of the pipe. A bearing boot is rigidly secured to the mast and in frictional contact with the inside surface of the pipe. The bearing boot slides around the inside circumference of the pipe in a circular or arcuate path as the mast and load beam revolve around the central axis of the mast. The bearing boot includes an outer arcuate concave contacting plate having substantially the same radius as the inside convex surface of the pipe. A ring of foil may be secured on the inside of the pipe for providing the sliding surface for the bearing boot. The mast may comprise a flanged beam having a pair of side walls with a web portion therebetween.

Abstract: A turbodrill is disclosed which is connected to a string of drill pipe as a rotating shaft for driving a drill bit which may be a rotary bit or a high speed solid head diamond bit. The turbine section of the turbodrill has rotor and stator blades which are cresent shaped in cross section and are operated by drilling mud flowing therethrough to rotate the shaft. The shaft is provided with radial bearings which carry radial loads and thrust bearings which carry vertical or longitudinal loads. The thrust bearings, which carry the entire thrust load, consist of a pair of annular bearing plates each of which supports a plurality of friction bearing members, highly resistant to wear by the drilling mud flowing through the drill, consisting of cylindrical studs having flat faces with flat disc-shaped diamond bearing members supported thereon. There are preferably one more of the diamond bearing members on one of the annular bearing plates than on the other.

Abstract: A bearing structure having a substrate and a bearing surface of alternating, spaced, hard metal and soft metal areas is disclosed. The hard metal is metallurgically bonded to the base metal substrate by rapidly melting in a predetermined pattern a powdered hardfacing composition disposed on a bearing precursor surface of the base metal substrate. The melting is accomplished by scanning with a laser beam, or like high intensity, concentrated energy source. The melt is allowed to solidify rapidly. Gaps formed between isolated areas of the solidified hard metal are filled with a melt of a soft metal. After solidification of the molten soft metal, the resulting composite structure is machined to a desired depth to provide the composite bearing surface.

Abstract: A journaled bearing assembly including a pair of semicircular half shells defining a sleeve bearing with an outer surface and an inner bearing surface with the surfaces extending axially between laterally spaced opposite ends and circumferentially between oppositely disposed parting faces with the bearing surface being concave and the outer surface being convex axially between the ends while in the free state and held at gage diameter. In the free state the terminal portions adjacent the parting faces are on a longer radius than the radius of the central portion. When held at gage diameter the terminal portions are on a radius equal to the radius of the central portion. The bearing sleeve is disposed in a bearing housing with the bearing surfaces in engagement with a journaled portion of a shaft. The bearing housing includes clamping members in clamping engagement with the outer surfaces of the half shells to apply radical forces to the half shells.