Abstract: An elastic supporting body for each roller shaft and rollers of a skateboard, skates or the like, each supporting body including a pin extending downwardly at an angle from the mounting plate, with the remote end of the pin rigidly secured to the roller shaft, and thereby stiffening the supporting body along the axis of the pin, while still allowing the roller shaft to twist for altering the steering direction with weight shifts of the user.

Abstract: In a longitudinally movable rolling bearing having a plurality of endless rows of spherical rolling elements, elongated races are provided for supporting loaded rolling elements against the inner boring of a housing. The radially directed surfaces of the rails are identical, so that the rails may be reversed to prolong the life of the bearing. In one embodiment, the rails are straight in the lengthwise direction, for use in a bearing in a precision machine. In another embodiment of the invention, the rails are convex curved in the lengthwise direction, for use in a bearing requiring compensation for misalignment of a shaft and the housing.

Abstract: A locking device for maintaining the split inner ring of a bearing in assembled relation during shipment and handling prior to installation. The locking device is of generally rectangular shape and is made of a resilient elastically deformable material so that it is readily inserted and removed from the inner ring bore. When seated in place it exerts a clamping action in a radial direction by spring action and contacts in the bore of both inner ring parts of the bearing.

Abstract: A clutch release structure includes a clutch release bearing having a running portion, or the like, positioned to axially engage the diaphragm or dish-shaped clutch release elements. The bearing portion, or the like, has an axially extending portion which projects through the central boring in the clutch release elements, and damping means are provided radially between this extension and the clutch release spring elements.

Abstract: A centering ring for a rolling bearing assembly comprising an outer ring, an inner ring and at least two rows of rolling elements in the annular space between the rings and a retainer having pockets for the rolling elements. The centering ring is of T-shaped cross section and preferably made of sheet metal and the outer surface of the bar of the T conforms to the shape of the outer raceway and the vertical leg of the T is connected to the retainer. The centering ring may also be provided with grooves or be knurled to retain lubricant and the inner face of the T-shaped bar is preferably conical and outwardly divergent from the vertical leg to aid in the distribution of lubricant to the rolling elements.

Abstract: This invention refers to a device for maintaining a required liquid pressure in a hydrostatic bearing during its slowdown time at pump failure for avoiding metallic contact between the cooperating bearing surfaces, which device incorporates an accumulator connected in the liquid supply system of the bearing and having means for maintaining a sufficient liquid pressure on the liquid contained in the accumulator.

Abstract: A skateboard comprising an elongated board and a pair of trucks mounted adjacent opposite ends of the board, each having a pair of rotatable wheels. Each truck consists of a tensile elastic suspension member and a pivot support consisting of a universally movable ball and socket joint.

Abstract: An axial thrust bearing for a roller drill bit comprising a pair of one piece diamonds mounted in the axial end face of the journal and the interior of the cutting roller supported for rotation on the journal. Each diamond is mounted on a cup-shaped casing made of a softer metal than the journal and cutting roller. Preferably the confronting engaging bearing surfaces of the diamonds are spherical.

Abstract: A method for improving the impact strength of fiber reinforced plastic materials hard at ambient temperatures is described, the improvement comprising introducing particulate metal in the form of deformable particles of about 2-20 .mu.m thickness and having a length of about 10-20 times the thickness, the metal particles constituting about 10 to 80% and preferably about 20 to 50% by weight of the composition, and said particles being in contact with each other, and the composition containing a fiberglass mat of about 300 g/m.sup.2, whereby the impact resistance of the composition is rendered many times greater than the additive impact resistance imparted by either the reinforcing fibers or deformable metal particles alone.

Abstract: A flexible coupling comprises first and second coupling halves, at least a part of the first being inserted into the other, and the two coupling halves being linked together for transmission of power by means of resilient elements, these elements being surrounded over most of their surface and precompressed by the coupling halves.

Abstract: A self aligning clutch release bearing, mountable on a guide tube in a clutch assembly, includes inner bearing race tube and a rigid guide socket. An elastic collar affixed to the interior of the bearing race tube is provided with resilient internal projections which contact the guide tube and permit slight lateral shifting of the bearing race with respect to the guide tube. A rigid guide socket rides on the guide tube and has a radial flange which frictionally engages a corresponding radial flange on the bearing race tube to deter inclination of the inner bearing race tube relative to the guide tube.

Abstract: In a rolling bearing for linear movement with respect to a shaft, the bearing has a sleeve, and axially extending guide rails on the inner and outer surfaces of the sleeve. Rolling elements are guided by the guide rails, and have concave spool-like central portions matched to the shaft, to provide linear contact therewith. The ends of the rolling elements are convexly curved to match the curvature of the inner surface of the sleeve, so that the inner surface of the sleeve forms a raceway for rolling elements under load. Grooves are provided in the lateral surfaces of the guide rails for guiding balls disposed between the ends of adjacent rolling elements. End caps on the bearing have turn-around guides for directing rolling elements between the inner raceways and the raceways for unloaded rolling elements along the outer surfaces of the sleeve.

Abstract: A linear ball bearing having an outer shell and a cage which define between them a plurality of endless axial raceways filled with balls, has at each end an end ring having a shoulder extending radially outward for axially fixing the bearing in a housing bore. The end ring may be positioned and secured after the bearing shell and balls are situated in the housing. Alternatively, the shoulder may be formed of resilient tongues which are deflectable radially inwardly during insertion of the bearing shell into the housing bore, and which subsequently spring radially outwardly to engage the housing wall and secure the bearing in place.

Abstract: A method of facilitating the disposal of waste cutting liquid consisting essentially of an emulsion of partly soluble oils and water comprises subjecting a trickling flow of the liquid to the action of a current of hot air at a temperature of from 80.degree. to 250.degree. C. and thus evaporating the water from the liquid. Insoluble oils may be removed from the liquid by decantation before the liquid is subjected to the current of hot air. Preferably the oil which remains after the water has been evaporated from the liquid is used as fuel in the heating of the hot air so that the oil is disposed of. Apparatus for carrying out this method comprises an evaporation tower containing a series of plates alternately inclined in opposite directions to the horizontal and arranged one beneath the other to permit a trickling zig-zag flow of the cutting liquid over the plates from the top plate to the bottom plate in the series.

Abstract: An antifriction bearing cage comprising a plurality of parts centered and secured radially with respect to one another and axially secured together, wherein one of the parts includes a plurality of webs, one side of each web being terminated in a common ring. The free ends of each web include one centering spigot, each spigot having a defined outer surface converging toward a pin arranged thereon, and the centering spigot having a greater cross-section than the pin, the other of the parts being a cover part on the side thereof pointing towards the first part, having an opening for receiving the pin, a portion of the opening having lateral walls dimensioned to be engaged by the centering spigot having a correspondingly defined outer surface.

Abstract: A device for transforming a rotational motion into a linear motion comprising a shaft and a sleeve enclosing the shaft, the shaft and sleeve adapted for relative axial movement upon relative rotation of the shaft and sleeve. A plurality of rolling bodies between the shaft and the sleeve arranged in a closed track with a load carrying part in the form of a spiral line and a relieved recirculation part. The sleeve includes an inner portion of flexibly deformable material suited for contracting the rolling bodies and have a helical race track therefor and an outer portion provided with a recirculation channel for the rolling bodies. The shaft which is enclosed by the sleeve has a smooth surface and the rolling bodies are urged against the shaft by means of the inner elastic portion of the sleeve.

Abstract: A shock absorbing device for sliding bearings, such as hydrostatic bearings or hydrodynamic bearings particularly adapted for absorbing shock loads from a crusher shaft of a bell crusher comprising a base and a first element mounted on the base, a first chamber between the first element and the base of predetermined cross sectional area. The chamber is adapted to be supplied with a fluid under pressure. A second element is mounted between the machine member such as the crusher shaft and the first element and spaced from the latter to define a second chamber in fluid communication with the first chamber. The ball is mounted in a spherical seat in the first element and a piston in the second element engages the ball on the side thereof opposite the seat. Biasing means normally urges the piston against the ball.

Abstract: A roller bit for rock drilling comprising a body having at least one stub axle and a geared cutting element rotatably mounted on said stub axle. The stub axle and cutting element have confronting spaced raceways for a plurality of rolling elements. A shoulder is formed adjacent one end of the raceway in the stub axle to axially fix the rolling elements in one direction. A locking ring is mounted in the cutting element having an abutment shoulder confronting the opposite axial end faces of the rolling elements and axially fixing the rolling elements in a direction in the opposite direction. The locking ring has an outer cylindrical peripheral surface engaging in a complementary cavity in the cutting element adjacent the raceway surface therein. The locking ring has a seat for mounting a resilient sealing member engaging the stub axle adjacent the raceway therein connected in the mounted state to the stub axle.

Abstract: An electrically controlled window regulator in which a reversible electric motor is connected via transmission means to a window for movement thereof along fixed guides; said transmission means including an endless flexible member extending along a fixed path having a straight portion arranged parallel to said guides, and at which bracket means are arranged for movement along said straight portion with said flexible member and for connection thereof to said window; said motor having an output shaft on which a nut screw is mounted, and said nut screw being coupled to a flexible screw forming at least part of said flexible member.

Abstract: The shaft of a spinning rotor is journaled for rotation on pairs of rollers, and is urged against the rollers by a drive belt. The end of the shaft away from the rotor has a taper fitted into a corresponding taper of the central hole of a rolling bearing. The shaft may be held in the bearing by a permanent magnet spaced from the end of the shaft, or by an O-ring engaging grooves in extended portions of this shaft and bearing inner ring.