Abstract: A locking mechanism for connecting machine parts such as bearing rings on a support. The support includes at least one radially elastic element having a seating surface for the ring which is deflectable radially inwardly to permit assembly of the ring on the support surface and at least one locking element formed integrally with the support and acuatable between a release position wherein the snapping element can be flexed to facilitate assembly and removal of a ring on the seating surface and a locked position wherein the ring is supported in a form locking manner in the seating surface.

Abstract: A conveyor roller comprises a steel roller tube fitted with end cap assemblies incorporating bearings for rotatably mounting the roller tube on a fixed shaft. Each end cap assembly comprises a rigid housing which supports the bearing, and a separate collar of resilient plastics material mounted on the housing. The axially inner end portion of the collar has an annular recess which receives a radial flange on the housing, and the axially outer end portion of the collar consists of inner and outer tubular walls which are spaced apart prior to fitting of the end cap assembly in the roller tube. The external surface of the inner tubular wall is curved radially inwards and axially outwards. Each end cap assembly is secured in position by swaging the end of the tube so as to force the outer wall of the collar against the inner wall along its length.

Abstract: A tight bearing suitable for exceptionally heavy duty conditions is supplied with side screens (14) made of a plate composition (16) which is restrained to the external ring (10) of the bearing and forms a labyrinth seal against the internal ring (11), and of plastic and elastomer materials (15) supplied with a lip (17) which creates friction on the internal ring (11); other plates (18) are assembled externally with respect to the screens (14) and are integral on the internal ring (11) and form a labyrinth seal (23) with the external ring (10) of the bearing; the internal face of the external plates (28) is lined with a layer of plastic and elastomer material (19) from which at least one lip (20) extends and forms an essentially axial seal against the external face of the plate (16) of the internal adjacent screen (14); the lip (20) of the layer (19) which lines the internal face of the external plates (18 ) slips and seals along a certain length (21) of bent conical converging internal plate (16) towards the

Abstract: A sealing device for a slot between two elements, which are rotatable relative to each other, e.g. an outer and an inner race ring in a rolling bearing, incorporates a flexible sealing portion having a lip, which contacts a sealing surface surrounding the lip. The sealing portion is rotatable, and the centrifugal force acts upon it thus that it tends to leave the surface at increasing rotational speed. In order positively to avoid that the lip is urged so hard against the surface at high rotational speeds, that an unallowable temperature increase occurs, the sealing portion and the surface have profiles of such shape, that the lip is displaced in a direction which has a component directed radially outwards relative to the rotational axis, when the sealing portion with the lip is bent by the centrifugal force.

Abstract: In a worm gear comprised of a nut and a threaded spindle, the groove bottoms of the threads are provided with a central support projection, and a radially deeper region is provided adjacent the projection on both sides thereof. When radial forces act in the same direction at both ends of the worm gear, the projection serves as a radial support projection with sufficient axial play. By providing convexly curved thread flank surfaces, for example on the nut, the threads run under the same conditions also when the axes of the nut and spindle are inclinded to one another as a result of the application thereto of inclined forces. As a consequence, axial play is reduced. Clamping of the threads is avoided in this case, however, since the support projection hinders a wedging action between the threads of the worm gear.

Abstract: The present invention refers to a wheel bearing unit incorporating outer race ring (20), inner race ring (21) and rolling bodies (24) arranged therebetween. The wheel bearing unit according to the invention is intended to carry the driven wheels of a light vehicle. The characterizing for the wheel bearing unit according to the invention is that the inner race ring (21) is provided with an axially projecting portion (28), which is intended for mounting the unit to a drive shaft (30).

Abstract: A roller bearing assembly with two rows of rolling elements includes a first ring formed in one piece to have two raceways and two independent rings each having one raceway, a device for maintaining the relative positions of the rolling elements between the rings and a device for fixing the two independent rings axially to one another. The relative positions of at least some of the rolling elements are maintained by two parts of a retention device which includes, before the bearing is assembled, one or more connecting zones in a relatively weakened condition so that they will break during assembly of the rolling bearing assembly.

Abstract: An improved seal for a rotary shaft which exerts a pumping effect on a lubricant on its shaft. The seal comprises a substantially rigid annular supporting member and a generally annular elastic sealing member affixed coaxially to the supporting member and extending radially inwardly of the supporting member. The radially inner surface of the said sealing member defines a sealing contact surface adapted to sealingly contact the shaft. The improvement includes a first circumferentially extending portion on the sealing contact surface and a plurality of projecting portions extending axially from one side of the first portion and being circumferentially spaced apart, the first portion having a substantially constant axial width throughout its circumferences.

Abstract: For adjustment of the relative positions of two machine parts, at least one of the machine parts is provided with projections outwardly formed by stamping, the projections having contact surfaces which lie against the other machine part. The adjustment is performed by setting the projections back under the influence of a pressing force according to requirements. By this operation a relatively large contact surface can be provided. The deformation process takes place exclusively in the transition region between the projection and the rest of the machine part. The restoring forces are relatively small and relatively constant over the entire restoring range.

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: In a linear rolling bearing element, especially for tripod joints, the cage is formed of a relatively thick sheet metal and limit projections for a linearly movable support are formed by stamping out of the material of the cage. The rollers are likewise held in the cage by projections formed out of the cage. This results in a stable cage which can take the high forces from the engagement of the support. The outer roller may be close to the limit projection, in order to assure a good support of the roller in the extreme position of the tripod joint.

Abstract: A drive belt for use in e.g. continuously variable transmissions consists of a number of U-shaped segments of e.g. steel having diverging shanks, the outer portions of which being folded around a wire or a band which keeps the segments together. The segments are made of wire and are manufactured by winding a wire helically on a template and cutting the wound wire structure longitudinally into two elongated parts consisting of a row of wire segments which are kept together by any suitable means. The belt is completed by winding a wire or band longitudinally around each elongated part and folding the outer portions of the shanks of the segments around the wire or band.

Abstract: A sealing assembly which can be interposed between two relatively movable members to make a seal between the cavity lying between the said members and the exterior environment, composed of two annular elements each of which is firmly connected to one of the said members and on one of which are formed two sliding surfaces perpendicular to one another. The prinipal characteristic of the sealing assembly lies in the fact that it includes an annular sealing element having a sleeve-like lip on which is mounted a resilient element and radially from which extends an annular projection which can slide on one of the sliding surfaces, and a root zone from which extends a second lip independent of and substantially parallel to the first lip and able to slide on the other of the sliding surfaces.

Abstract: A seal assembly for sealing between a pair of bearing rings wherein one of the rings has an annular groove for the seal comprising elastic annular ring member having at least one circumferential projection and at least one sealing disk and a retainer member. The volume of the elastic ring, which has been increased by the retaining sections for the parts to be held in place being in the preinstalled state at least the same as that of annular groove in one of the bearing rings.

Abstract: A method for detecting faults or defects in moving machine parts wherein mechanical vibrations produced by a fault or defect are converted into an electrical signal from which the condition of the machine part is obtained. For converting the mechanical vibrations into an electrical signal, an acoustic-emission transducer with wide bandwidth is used. A frequency range in the electrical signal is selected where the half wavelength is smaller than the smallest linear dimension of the cross section of the transducer face which is in contact with the machine part.

Abstract: A device for elastic interconnection of two rotatable shafts consisting of a first sleeve intended to be connected to a first shaft end. The sleeve has a radial flange and a cylindrical, annular portion connected to the periphery of the flange. A second sleeve is intended to be connected to a second shaft end and to be surrounded by said cylindrical portion. A number of elastically deformable spherical elements are arranged in opposing recesses in said second sleeve and cylindrical portion and distributed around a shaft end. The recesses in the cylindrical portion are arranged in the end surfaces of plugs and provided with external threads. The plugs by being turned are displaceable in threaded bores provided radially in the wall of the cylindrical part. The outer end surfaces of the plugs are provided with diametrical grooves and the cylindrical portion is provided with a diametrical groove. The diametrical grooves and the peripheral grooves define an annular groove.

Abstract: Spring for a free-wheel device with wedging cams, of the type comprising a series of main undulations (8) provided with apertures (9) for allowing the cams (2) to pass through and for holding them, and a plurality of tilting tongues (12) each acting on one of the side faces of a cam in the direction assisting the wedging action, characterized in that the rear edge of each aperture has a flat portion (10) folded back towards the outside and capable of bearing against a surface portion (22) of the rear side of the cam, the tilting tongue (12) being located on the side where the front edge of the aperture (9) is located.

Abstract: A rolling bearing comprising an outer race and an inner race situated coaxially therein both races defining an annular space therebetween and a row of rolling members in the annular space between the races, and generally annular ring seals, having inwardly directed sides and inner and outer peripheral areas, for sealing off from the surroundings, on either side of the rolling members, the annular space between the races wherein a lubricant is present, wherein the inwardly directed sides of the sealing rings is formed with at least one cavity containing a fluid magnetic lubricant, and a magnetic forming magnetic fields, the poles of which fields are located on either side of the cavity, near the races.

Abstract: A tensioning mechanism for drive belts which consists of a support arm, a rotating tensioning roll mounted on the arm, and a pivot bearing on the support arm a certain distance away from the tensioning roll. The tensioning mechanism is attached together with a mounting plate by a fastener to a machine block. A spring urges the tensioning roll away from the mounting plate and toward the drive belt. In the area of the pivot bearing, the mounting plate has, in the axial direction of the bearing, a fork-shaped cross section with shank sections which support the pivot bearing on both sides, radially and axially, by way of the fastener.