Abstract: The invention relates to a method and an apparatus for heating up a first gas-flow with a second gas-flow. The first gas-flow is caused to flow along a wall in a cylindrical chamber as a rotating gas-flow and the second gas-flow is caused to flow centrally in the chamber, surrounded by the first gas-flow, so that the wall is protected.The apparatus comprises a chamber having an inlet section designed as a whirlpool chamber and an elongate cylindrical mixing part non-radial inlets for the first gas-flow, having their orifices in the wall of the whirlpool chamber and having an inlet for the second gas-flow, arranged substantially centrally in the end of the whirlpool chamber facing away from the mixing part, as well as an outlet section arranged in the mixing chamber part opposite the whirlpool chamber.

Abstract: A bearing unit for a rotating component, such as a toothed gear or guide pulley, with an integrated pump consists of a housing with a pump chamber defined therein, a pump rotor installed in the pump chamber, a support pin having an end supported in the housing, and a bearing ring rotatably mounted on the support pin. The bearing unit is mountable on a support surface of an associated machine element, such as an engine block by means of a flange on the housing. The pump rotor and the rotating component are securely mounted on the outer surface of the bearing ring in mutual abutting relationship. The pump rotor is disposed between the housing flange and a web portion of the rotating component. The rim portion of the rotating component circumscribes the pump rotor. A sliding sealing ring is provided between the housing or housing ring and the rotating component.

Abstract: The hydraulic tappet comprises a cup-shaped body having a cylindrical side wall and a flat bottom wall, a piston element moving axially inside a cavity, formed in the said bottom wall and defining a first pressure chamber, an annular element of deformable material located on the outside of the said piston element and inside the said cylindrical wall, ducts for hydraulically connecting the said second chamber to the said first chamber and on which is fitted an on-off member, and a guide element moving axially inside the said cylindrical wall on the said cup-shaped body and having a side surface and a bottom wall.

Abstract: Machine for machining a groove round the external periphery of the base of a nozzle and notably enabling the back of a weld to be reworked from the outside when a nozzle is being installed on a nuclear reactor vessel.The machine comprises a cylindrical drum (5) in two parts (41, 45) equipped with locking and position-holding shoes (6), a machining head driven in rotation by means of a gear ring (9) and a pinion (17). The cylindrical drum (5, 41, 45) is locked and held in position with respect to the nozzle (1) by means of an intermediate coupling ring (23) secured by screws (31) to the nozzle (1) and by the locking shoes (6) fixed to hydraulic rams (47).

Abstract: A transmission unit for a vehicle with a transverse engine and gearbox, beneath the gearbox there being carried a differential to which are connected half-shafts of equal length; a first half-shaft is connected to the differential by means of an intermediate shaft supported by a fixed support beneath the motor provided with a rolling element bearing housed in a casing, constituted by at least one sheet of pressed steel, and a resilient sleeve which connects together the outer ring of the bearing and the casing, having been directly adhered in a vulcanization phase onto both these.

Abstract: A multiple-row tapered rolling bearing in an O-arrangement has an outer ring, a pair of abutting inner rings, and tapered rolling bodies arranged therebetween. The inner rings are axially secured together by a clamping ring which form-locks with annular grooves formed in the inner rings. A bore is provided in the outer ring which is adopted to allow a separating tool to be passed therethrough. The separating tool has a cutting edge which is impressed on the clamping ring during relative rotation of the outer and inner rings, thereby severing the clamping ring for disassembling the bearing.

Abstract: A spring ring is arranged in an annular gap of a pair of outer bearing rings in an arrangement for fastening a rolling bearing in the bore of a housing. A groove is provided in the housing for receiving the spring ring. A holding ring is mounted on the outer surface of the bearing outer ring, the holding ring having a collar aligned to hold the spring ring within the annular gap during the disassembled condition of the bearing. The holding ring has an axial surface adapted to engage the end of the housing during assembly, to enable the holding ring to be forced axially along the outer surface of the bearing outer ring. The holding ring futher has an end away from the spring ring adapted to form a seal with the bearing inner ring.

Abstract: Seal for a generally annular gap between a pair of relatively rotatable or reciprocatory annular machine members, one member having at least one continuous perimeter surface portion located in the gap or in contiguity to the gap, and the other member having a corresponding surface portion located in the gap or in contiguity to the gap, respectively, characterized by a first coating of an adhesive material applied to said one surface portion, and a second coating of a multitude of closely spaced short flexible fibers of a generally equal length supported in said adhesive material, and said fibers being generally oriented with respect to said one surface portion, each fiber being independently secured solely at one end by said adhesive to said one surface portion, and at least a plurality of the free fiber ends in anti-frictional contact with said corresponding surface portion of said other member.

Abstract: The invention concerns a nut provided with a locking element (4, 5, 6, 7), which by e.g. a screw (8, 9, 10, 11) can be urged radially against a screw thread. In order to provide a self-contained and easily releasable nut the locking element is arranged in a recess which, together with the element, is so arranged that at least a part (12, 13, 14, 15) of the element is deformed elastically when the element is moved against the screw thread. Thereby the element springs out of contact with the thread when the screw (8, 9, 10, 11) is released.

Abstract: A sealing device for bearing bushings, especially for universal joints including a cup-shaped bearing bushing overlying a universal joint pin comprising an inner sealing ring, a sheet metal part connected to the bearing bushing adapted to fix the inner sealing ring in place in an axial direction, and an outer sealing ring provided on a shoulder of the joint pin supported in the bearing bushing, the inner sealing ring has a retaining part between the rolling elements and the free end of a preferably radially oriented shank of the sheet metal part, which has one or more openings, which connect the spaces defined by the outer sealing ring, the inner sealing ring, and the sheet metal part to each other.

Abstract: In a freewheel mechanism with a number of blocking members arranged between raceways on two elements, one raceway is arranged on a body which is co-operating with one of the elements and is turnable thereon. The circumference of the body is variable for varying the distance between the raceways. The variations can take place because the body is elastically deformable radially and by tightening and releasing a threaded portion between the body and the element, the thread flanks thereby acting as wedges. The purpose of the arrangement is to avoid jamming of the freewheel by the blocking members upon reversal of the direction of rotation when the blocking members are in blocking position. The unwanted torque developed during jamming of the freewheel releases the tightened thread joint between the body and the element, whereby the circumference of the body and the distance between the raceways of the freewheel is increased so that the blocking members are released.

Abstract: A tension roller has a rolling bearing supported by a multipart support which is swivable about an eccentrically arranged mounting bolt. A rolling sleeve for a belt is arranged on the outer ring of the bearing. The support includes two side parts which abut the side surfaces of the bearing inner ring, thereby preventing axial movement. A central body is provided with respect to which the side parts are fixedly arranged. The central body is adapted to provide radial support for the bearing inner ring.

Abstract: The invention relates to a method and a plant for cooling gases and removing dust from them. In a first step after saturation with water vapour, the gas is brought to accelerate, additional water being simultaneously added to the dust particles in the gas, whereupon the gas flow thus loaded is brought to pass over the surface of the water in a first sedimentation container (1) so that the majority of the dust content is released to the sump in the sedimentation container (1). The gas flow is thereafter subjected to final cleaning and cooling in a second step, through direct contact with water, whereupon the water utilized in this manner, possibly via a second sedimentation container (2), is wholly or partially returned to the first step.

Abstract: A sealed rolling bearing in which the seal consists of a sealing lip and a sealing projection connected to a sealing body. When the sealing body is seated in a groove formed in the outer ring, the sealing lip abuts a side surface of a groove formed in the inner ring with prestress. The sealing lip and sealing projection abut under the influence of the prestress to form a conical, outwardly directed centrifugal surface for ejecting moisture and dirt through a gap seal formed between the sealing projection and a shoulder of the bearing inner ring.

Abstract: Hydraulic tappet comprising a cup member, the latter sliding in a seat and housing a second cup member sliding in relation to the first in such a manner as to form a first chamber, and a flexible annular member located essentially inside the said second cup member in such a manner as to form a fluidtight second chamber connected hydraulically to the said first chamber; the said two chambers being filled with activating fluid the flow of which from the said second to the said first chamber being controlled by an on-off member.

Abstract: The rolling bearing of a guide roller is held in the bore of a thin wall roller adapted to guide a pulley, by projections radially inwardly extending from the thin wall roller. The projections may be in the form of beads having planar surfaces in a plane normal to the axis of the bearing on the side facing the bearing, or they may be notches having one side thereof separating from the material of the roller to be forced radially inwardly to engage the sides of the bearing. The notches may be resilient, to enable the bearing to be snapped into position.

Abstract: A bearing assembly comprising inner and outer rings having spaced raceways for a plurality of rolling elements, seal means adjacent at least one axial end of the rings completely within the axial confines of the rings comprising a first sealing element and an annular shield of a rigid material secured to one of the race rings spaced axially outwardly of the first sealing element and having an outer edge spaced from an arcuate wall of the other race ring to define a slotshaped opening to form between the first sealing element and the shield a chamber connected via the slot-shaped opening to the environment of the bearing.

Abstract: A swivel pin bearing for rotatably seating a swivel pin in the yoke eye of a yoke arm. The bearing includes a bushing having a base portion and a sleeve portion integrally formed with the periphery of the base portion, this sleeve portion being arranged in the yoke eye with radial seating play, and a support plate releasably secured to the yoke arm. The base portion has a planar outer surface which opposes a planar inner surface of the support plate. An element is provided for coupling the bushing to the support plate such that axial displacement of the bushing relative to the support plate is prevented. The bushing is capable of sliding radial displacement relative to the support plate which is greater than the radial seating play of the bushing in the yoke eye.

Abstract: The invention relates to a method and a means for facilitating the replacement of plasma generators and for minimizing the heat losses during installation of a plasma generator in a shaft furnace, particularly for plasma generators of the type comprising cylindrical electrodes between which an electric arc is generated, the bases of the arc being caused to rotate by means of electric field coils arranged around said electrodes. To achieve this at least the field coil (7) surrounding the electrode nearest to the nose (12) of the plasma generator, together with its connections for coolant and electricity, is permanently secured in the wall (1) of the shaft furnace in conjunction with the opening (6) for insertion of the plasma generator (11) into the shaft furnace.

Abstract: For a bearing bushing of generally cup-like form for universal joints including a universal joint pin, a check plate disposed between the axial end face of the pin and the bottom wall of the bushing, said check plate having on the side thereof confronting the pin concentric or circumferentially distributed projections with check surfaces and in that, proceeding from the end surface facing away from the pin, it has recesses or the like, which are arranged under the projections in the axial direction.