Abstract: An improved self-centering clutch thrust bearing is described which includes a rolling bearing assembly and a sleeve bearing. The sleeve bearing and rolling bearing assembly each include radially extending flanges and means are provided for captivating the flanges in an axial direction while allowing limited play in a radial direction. An annular collar and an annular disc are also provided and are positioned for enabling a limited relative motion in a radial direction between the bearing assembly and the sleeve bearing.

Abstract: An installation for the drive and support of a disc-shaped rotor. The installation for the drive and for the bearing support of a disc-shaped rotor incorporates a constructional element for the magnetic, and particularly electromagnetic, support and drive, which annularly encompasses the rotor in a ring-like configuration, wherein the magnetic support serves primarily for absorption of the radial forces, and that the installation encompasses an aerostatic and/or aerodynamic bearing support for primarily absorbing or receiving the axial forces, and whose rotating portion forms an integral unit with the rotor.

Abstract: Hydraulic device for exerting a pre-stressing traction on bolts or pins comprises three stages, with each stage comprising a piston within a chamber. The thickness of the skirts of the piston increases from stage to stage in proportion to the pressure to which the piston of that stage is subjected during a stretching operation.

Abstract: An electrically controlled window regulator for raising and lowering a mobile window of a motor vehicle door, and in which a slide rigidly connectable to said window is slidably mounted on a guide rigidly connectable to a support of said window, and is reciprocated by a flexible screw consisting at least partially of a precompressed spring extending through a rigid tubular member connected rotatably to said window support. The tubular member is provided with an inner volute with circulating balls coupled to the precompressed spring, and electrical drive means are provided to rotate the tubular member about its axis relative to said window support in one direction and to other.

Abstract: A ball bushing for linear motions comprising a circumferentially extending cage member disposed between an outer sleeve and a shaft or the like. The outer sleeve is characterized by a novel structural arrangement providing ease in mounting. The outer sleeve is a self-contained unit which is easy to handle and suitable for mounting in housings in a manner allowing prestressing of the bushing. The cage has a plurality of circumferentially spaced axially oriented grooves which define closed paths for the rolling elements and includes at least one path in which the rolling elements are loaded. The cage also has at one axial end a projection defining an abutment shoulder for the sleeve. The sleeve comprises a plurality of longitudinal sections of a predetermined length to overlie the grooves in the cage. Adjacent the sections have complementary grooves and ridges formed therein permitting assembly by relative axial displacement to form a closed sleeve encircling the cage.

Abstract: A method and apparatus for increasing blast gas temperature in a shaft furnace by passing at least part of the blast gas through a plasma burner, and also supplying additional fuel to the furnace at the tuyere level.

Abstract: Stopping means for an open-end spinning turbine comprises a lever pivotable beneath the shaft of the turbine and the drive belt for the shaft. The lever moves toward the belt and the shaft to sequentially lift the belt off the shaft and lift the shaft from its support rollers.

Abstract: A hydraulic release mechanism for automotive clutches and the like comprising a housing and a bearing assembly. The assembly comprises a non-rotating race ring, a rotatable race ring adapted to be connected to an operating element for said clutch and a plurality of rolling elements arranged therebetween. The bearing assembly is mounted with respect to the housing for axially slidable movement and radially floating movement. The housing under pressure, the force of which is transmitted through the end of the non-rotating race ring, the rolling elements, and the rotating race ring to the clutch operating element. Preferably, the means for mounting the bearing assembly with respect to said housing comprises a flexible bellows.

Abstract: A castor wheel having a fork at which upper part a rolling bearing is applied and being provided with a support means or support plate to which by bolt fastening a load or carriage can be connected, the support means being provided with a relatively thin, slightly deformable layer having projections which fit around the support means wherein the layer has projections which fit through bolt openings of the support means by means of a rim-part which resiliently fits over the edge of a bolt opening.

Abstract: A steel powder suited for powder metallurgical purposes consists of an amorphous to compact-grained, essentially dendrite-free material with irregularly cornered particle shape. Such a steel powder may be produced by causing molten steel to form at least one discrete, relatively thin film on a relatively cold metal surface of great cooling capacity, causing the thin film to solidify extremely rapidly on the metal surface to form a brittle amorphous to compact-grained, in principle completely dendrite-free steel film, and crushing or grinding the brittle film into a powder of an irregularly cornered particle shape.

Abstract: In a bearing assembly having at least two relatively rotatable members, a device having means for generating a magnetic field and means for sensing variation in the magnetic field, said bearing assembly including means for inducing variations in the magnetic flux which variations have a frequency proportional to the rotational speed of one member relative to other member, said inducing means being associated with one of said members and said means for sensing variations being associated with said other bearing member and seal means partly defined by said members completely sealing said inducing and sensing means.

Abstract: In a known method of electrolytically marking metallic articles a hood having its bottom closed by a stencil with perforations is partially filled with an electrolyte and contains a cathode. An article to be marked is brought into contact with the stencil and constitutes the anode. The invention consists in maintaining the space within the hood at a partial vacuum sufficient to cause bubbles of air which have passed through the perforations in the stencil to flow upward in the hood, thus preventing electrolyte from seeping downward through said perforations.

Abstract: A bearing cage for use in a bearing having inner and outer rings, a plurality of balls arranged in two axially spaced rows between the rings, and a cage for separating the balls, the cage being dimensioned to permit relative motion between the rows of rolling elements, or between the rolling elements in their respective rows.

Abstract: A mount for a bearing comprising a hub portion having a cylindrical surface defining a seat of a predetermined diametral dimension to firmly support a race ring of the bearing. The mount is made of a molding material having a different longitudinal expansion coefficient than the bearing ring and a spiral cast in the molding material and made of a material having the same longitudinal expansion coefficient as the bearing ring. The spiral is mounted in a predetermined position so that at least a portion thereof forms the surface defining the seat. In the preferred embodiment, the spiral is in direct contact with the bearing ring.

Abstract: A tapered roller bearing comprising inner and outer members and a plurality of frusto-conical rolling elements interposed between the members has means for controlling the skew angle of the rolling elements during operation of the bearing to lower overall friction in the bearing and to increase its service life. The profiles of the rolling elements and raceways are designed for skewing the rolling elements at a predetermined angle to cause the rolling elements to slide relative to the raceways during operation of the bearing. Optimum bearing performance is obtained when the element in the load zone is disposed at a positive skew angle which, by definition, occurs when the rotational axis of the rolling element and the bearing axis are not coplanar and the axial component of an external load applied to a bearing raceway tends to be counteracted by an oppositely directed axial component of a friction force applied to that raceway by the rolling element.

Abstract: A thrust ball bearing has an outer cup-shaped ring and an inner cup-shaped ring. A ball bearing assembly of a plurality of balls and a cage is arranged between the closed ends of the bearing rings. The closed bottom of the outer ring is curved, with the center of curvature being on the side thereof toward the bearing assembly. The bearing rings have thin walls, and the thrust ball bearing is particularly adaptable for use as a clutch throw-out bearing.

Abstract: A steel flake product, suitable for being crushed or ground to form a steel powder for powder metallurgical purposes, consists of a plurality of relatively thin, brittle and easily crushed, substantially dendrite-free steel flakes of amorphous to compact-grained structure. Such steel flakes are produced by causing molten steel to form at least one discrete, relatively thin flake-shaped layer on a relatively cold metal surface of great cooling capacity, moving rapidly and substantially across the direction of delivery of the molten steel. Due to the great cooling capacity the layer is made to solidify extremely rapidly.

Abstract: A ball bushing comprising a sleeve, a cage, inside the sleeve adapted to be mounted on a shaft member or the like. The ball bushing has formed therein a number of closed ball paths, the balls being loaded between the sleeve and the shaft in a section or zone of each ball path. The sleeve has a number of longitudinal profiles countersunk in relation to a circle circumscribing the sleeve. The profiles define internal raceways for the loaded balls. The sleeve is also characterized by a generally uniform or constant cross sectional shape along its entire length.

Abstract: In a hydrostatic bearing for rotatably supporting therein a member comprising a shoe having an arcuate first surface confronting the member and having formed therein a pocket for a fluid under pressure, the first surface and said member being of a predetermined relative configuration to provide essentially a line contact therebetween, the improvement comprising means defining a projection in said pocket having a second surface confronting the member of generally the same contour as said first surface to provide an additional essentially line contact between said member and said second surface.

Abstract: A clutch bearing assembly has inner and outer rings defining a race for ball bearings. The outer ring is adapted to engage a clutch lever, and the inner ring is adapted to be a stationary ring. A sliding sleeve for the assembly is coupled to the inner ring by deformable elements positively affixed to one of these members. The deformable elements may be wire bights having their ends axially inserted in grooves in the inner ring and sliding sleeve. Alternatively, the deformable element may be a spiral spring radially engaging an axial extension of the inner ring and having ends inserted in axially extending holes in the sliding sleeve.