Abstract: A universal joint has an output shaft mounting a clevis which is projected into a yoke upon a drive shaft. A cylindrical roller connector is positioned within a socket in the clevis. A transverse pivot post upon the yoke extends through the roller connector for a pivotal connection with the roller connector upon a first axis. Transverse assembly pins project axially outward centrally of the roller connector into the clevis for pivotal movement of the clevis upon a second axis at right angles to the first axis.

Abstract: A universal joint for shafting, and more particularly for rolling mills, with a device for suppressing pivoting of the joint is provided. For this purpose there is provided an axially yielding element, preferably in the form of a piston and cylinder unit driven by fluid pressure, in one joint fork. The device includes piston and cylinder unit which acts on an element which is connected with one of the other moving means of the universal joint. This other means can be either a rod secured to the other joint fork or a web-like plate between the bearing eyes of the other joint fork. It is also possible for the other movable member to be in the form of a rod, which acts through the crosspiece of the universal joint on a mating surface in the other joint fork. If the spherical surface is located on the crosspiece itself, there is then the possibility of preventing the free joint end from flopping downwards while nevertheless being able to pivot in a horizontal plane.

Abstract: A trunnion cross for connecting two yokes. The trunnion cross includes two pairs of trunnions, wherein each pair is located diametrically opposite each other and extends along an axis, wherein the two axes of the trunnion pairs extend perpendicularly to each other. Each trunnion is received in a roller bearing mounted in an eye of the yoke. The trunnion cross defines two throughbores extending perpendicularly to each other. Cylindrical throttle inserts are inserted in the throughbores for pressure redcution. A thread is formed on the outer circumference of each throttle insert defining a throttle passage. The throttle inserts ensure a uniform reduction of the lubricant pressure within the trunnion cross toward all four trunnion bearing. The danger of a clogging of a lubricant duct by dirt particles is reduced. Any plugs formed by hardening lubricant which cause clogging of a lubricant duct can be ejected.

Abstract: A power transmission device which includes trunnion and bearing sets for transferring power from a power generating unit to an operating unit. In the preferred embodiment of the invention, a cross is provided with a plurality of trunnions which define transfer surfaces. A bearing member in the form of a cup is provided for each of the transfer surfaces. The bearing cup is defined by a plurality of internal bearing surfaces which are integral with the bearing cup sidewall and which contact the transfer surfaces of the cross. The bearing surfaces, in the preferred embodiment, are semi-circular in cross-section and make bearing contact with the essentially cylindrical transfer surface of the cross. The bearing cup is preferably fabricated using powder metallurgy techniques which advantageously form the integral bearing surfaces within the cup, thereby eliminating the necessity for the use of balls or needles in the cup.

Abstract: A metal journal forging has a central body portion and four substantially equal legs circular in cross section which are integral with the body portion with the axis of each leg being at substantially a right angle to the axis of each adjacent leg. A curved portion extends between each adjacent pair of legs. The flow lines of the grain structure of the forging in each quadrant formed by the axes of the legs are substantially parallel the contours of the exteriors of the legs and curved arcuate portion in the quadrant. The method for forming a metal cruciform journal forging comprises placing a metal forging billet in a die assembly having a main cavity for the reception of the metal cylinder and a pair of opposed cavities branching off from the main cavity at 90.degree. to the main cavity.

Abstract: A spider bearing having a radial bearing and a thrust bearing wherein the inner ring of the radial bearing rests on the outside axial end of the pin through the use of a flange against the end of the pin while another flange, axially disposed from the first, forms the inner race of the thrust bearing. Therefore, axial force is introduced via the end of the pin. The root of the pin, therefore, remains free of slots or joints, and without contact with the inner ring and the thrust bearing, such that upon deformation under load, tilting of the race does not occur. Therefore, parallelism of the thrust bearing races is maintained and uniform load-carrying capacity of the bearing is assured. The spider may, therefore, be shaped more optimally in the region of the root so as to obtain greater strength.

Abstract: A spider for a Hooke's joint typically includes a center piece and four pins radiating therefrom. The pins are all located in a plane which intersects the rotation axis of the spider. Between adjacent pins, the center piece has a transition section, which is machined to define a concave fillet. In the preferred form, the fillet is shaped to define an arched, toric outer surface, and particularly as viewed along a longitudinal cross section along the rotation axis of the center piece, the outer surface comprises two partially cylindrical fillets symmetrically located at opposite sides of the plane through which the axes of the pin pass. These two fillets are machined by a tool that moves longitudinally along a path parallel to the plane of the pin axes for machining and the tool is swung around a swivel axis parallel to the plane of the pin axis for forming the fillets symmetrically of the plane of the pin axis.

Abstract: A universal joint transmission for a rearwards gear transmission that has a shaft which is in driving engagement with the interior of the receiving hub of the universal joint, but is movable longitudinally relative to the receiving hub, the transmission including a driving gear hub which is hollow, and which adjoins the receiving hub, its interior forming with the inside of the receiving hub a space in which the shaft extends from the gear hub into the receiving hub, the driving coupling member of the universal joint being in driving connection with the gear hub, the gear hub and a ring member of the coupling device of the universal joint being formed internally flaring outwardly to provide for easy pivoting of the shaft.

Abstract: The driving shaft has an end shaped to overlap the end of the driven shaft. The two shafts are interconnected by a coupling member. The coupling member is connected to the driven shaft by a long pin. The overlapping portion of the driving shaft is connected to the coupling member by two short pins. A preload spring mechanism applies preload forces against the two shafts.

Abstract: The disclosure concerns a universal joint shaft having two coupling forks joined at a journal cross. Various embodiments of aligning apparatus selectively restrict the journal forks to adjust the angle of bend with respect to each other. In one embodiment, a tube radially outside the coupling forks and journal cross is supported on one fork and is driven by a pressure cylinder against the other fork to restrict the bending of the forks with respect to each other at the journal cross. In other embodiments, one or more piston/cylinder units are provided on one of the forks, with the piston being movable against a bearing point on the other fork for restricting the extent to which the other forks may bend. Pressure medium is delivered to the pistons through a pressure medium line controlled by a pressure maintaining valve which is shiftable for permitting pressure medium to pass to the piston/cylinder unit or to stop passing thereto.

Abstract: The driving shaft has an end shaped to overlap the end of the driven shaft. The two shafts are interconnected by a coupling member. The coupling member is connected to the driven shaft by a long pin. The overlapping portion of the driving shaft is connected to the coupling member by two short pins.

Abstract: A universal joint includes a first member and a second member joined via a coupling assembly. The coupling assembly includes a pair of washer-like seats engageable with ball studs carried by the pair of members and a nut and bolt assembly. The nut and bolt assembly cooperates with one of the washer-like elements to define a stop and the one washer-like elements defines a stop with at least one of the ball studs and/or one of the members to permit easy assembly of the universal joint and smaller members.

Abstract: One half of a Pot-type universal joint consists of four spherical rollers rotatably mounted, but axially fixed on four mutually perpendicular radial trunnions. Each roller rolls in a grooved member connected to the other joint half. The four grooved members are free to move relative to each other and to their supporting joint half, but only in a way that satifies the kinematic requirements set forth in the specification, while providing a torsionally rigid connection between the two joint halves. The transmission of torque is homokinetic. The joint is adaptable for either axially fixed or axially displaceable requirements.

Abstract: A Pot-type universal joint transmits torque from one shaft to another using four rollers mounted on four trunnions. The trunnions maintain their mutual perpendicularity under all operating conditions. They are free to move relatively to each other and to the shaft to which they are joined but in a way that satisfies the kinematic requirements set forth in the specification, while providing a torsionally rigid connection between the shafts. The transmission of torque is homokinetic. The joint is adaptable for either axially fixed or axially displaceable requirements.

Abstract: In a universal joint having a trunnion cross including trunnions defining a centerline extending centrally therethrough and trunnion cross support members which include a yoke defining a yoke bore and a bearing bush received within the bore and receiving therein the trunnions, an improvement is provided in that the trunnion cross support members are formed with at least one conical surface configured to taper away from a plane containing the centerline of the trunnion in a direction outwardly from the center of the universal joint. Conical surfaces may be formed on opposite sides of the trunnion centerline to extend an angular distance circumferentially which is greater than twice the bending angle of the joint. The conical surfaces may be formed either on the walls of the yoke bore or on the bearing bush.

Abstract: A method and apparatus for increasing the life of universal joints of the pin and block type by reducing the running temperature of the pins and bearings to inhibit oxidation and vaporization of the lubricant film between those parts. The method and apparatus relate to conducting heat from the interior of the pin and bearing zone through heat transfer means and discharging that heat to the surrounding medium through heat dissipating means.

Abstract: A novel universal joint is made by forming a pair of elongated members, finishing the ends of said members to form bearing surfaces which are hard and smooth, and rigidly interconnecting the members between their ends to form a substantially cruciform spider structure which is subsequently assembled with the bearing surfaces of one member pivotally connected to the jaws of one clevis and with the bearing surfaces of the other member similarly connected to the jaws of another clevis, thereby completing a universal joint.

Abstract: A universal joint comprising a block and pin type mount as component parts of honing tool assembly. Each pin is mounted and locked in place with set screws to the universal joint drive block.

Abstract: A universal joint assembly which includes a first and a second yoke operatively interconnected by a trunnion cross arranged therebetween is formed with a generally centrally located bore extending through the trunnion cross between the first and the second yoke with a bolt extending within the bore interconnecting the first and second yoke through the trunnion cross. One end of the bolt is attached to a radially movable member in the first yoke and lock means are provided for locking the radially movable element in any selected position in order to fix the position of a connecting member joined to the second yoke so that interconnection of torque transmitting elements may be facilitated.