Abstract: A locking rotation-transmitting coupling comprises a nonrotatable member providing a housing having a cylindrical bore surface; a driven member having a hub portion that is, in cross-section, a regular polygon concentric to the bore axis, with axially extending sides that oppose and are radially spaced from the bore surface; and a driving member having axially extending fingers in the space between the bore surface and the hub portion, there being as many fingers as there are sides of the polygon, and the fingers being equidistant from said axis and spaced at uniform circumferential intervals. Two identical roller elements are confined in each space between circumferentially adjacent fingers.

Abstract: A flexible coupling is provided for connecting ends of two shafts which may be misaligned. The coupling includes a first member which is attached to one of the shafts and a second member which is attached to the other shaft. Each of the members has three dogs extending toward the other member but spaced therefrom with a resilient drive insert located therebetween. The drive insert has an annular flange which extends around the dogs and between the members and specifically engages shoulders or recesses on both members. The dogs have negative angles so that in the event one of the members should become loose on its shaft, the dogs will still remain in engagement. Finally, hubs of the members have locking inserts which enable the hubs to accommodate different shaft shapes.

Abstract: In a hydromechanical transmission, low and high speed drive power trains are selectively completed in response to variation of the speed ratio between an input shaft and an output shaft. The transmission comprises a speed ratio detecting valve for detecting lower and higher limits of a predetermined speed ratio and a clutch control valve for conducting the switchover between the low and high speed drive power trains with a predetermined time lag after the actual speed ratio reaches a range defined by the lower and higher limits of the predetermined speed ratio.

Abstract: A universal joint of the type including: a first shaft to which tripod shafts are secured radially from the axis thereof; three rollers formed at the outer peripheries thereof with spherical surfaces and with which the tripod shafts are crowned; and a second shaft provided therein with raceways identical in number with the rollers and on which the outer peripheries of the rollers roll and are supported. The universal joint further includes a plurality of oil grooves provided at contact-roll surfaces between the rollers and the cylindrical raceways.

Abstract: A universal joint assembly comprising a yoke to be connected to a drive shaft, another yoke to be connected to a driven shaft, a spider and needle bearings for rotatably supporting the trunnions of the spider. The joint is used to interconnect the drive shaft and the driven shaft at an angle of intersection of up to 15 degrees. The ratio of the diameter d of the trunnion to the allowable swing diameter D of the universal joint, namely d/D, is greater than 24%.

Abstract: A universal joint comprises a first pin disposed with its axis intersecting the axis of a first yoke at right angles thereto, a second pin disposed with its axis intersecting the axis of a second yoke at right angles thereto and positioned at right angles to the axis of the first pin, and a connecting member disposed between the first and second pins. The axes of the first and second pins intersect the axis of the connecting member as spaced apart from each other by a suitable amount of offset. The pins are provided at their opposite ends trunnions of increased diameter, giving the universal joint a greatly increased torque transmitting capacity.

Abstract: A releasable locking and sealing assembly for a cylindrical casing which fits over a body. The body includes a cylindrical portion about which an O-ring formed from a stiffly deformable, springy material is disposed. The casing is dimensioned to compress the O-ring as it is slid over the body, and includes an annular groove around its interior cylindrical wall, the width of the groove being no greater than the width of contact between the casing wall and the O-ring when compressed. When aligned with the groove, an annular portion of the O-ring is crimped to form a seal between the body and casing which resists axial movements of the casing relative to the body. However, the seal yields to an axial force coupled with a twisting force on the casing, thereby permitting the casing to be locked in sealing relation to the body but readily removed when desired. The invention is of particular usefulness in a linear motion potentiometer.

Abstract: Disclosed is an improved segmented driving shaft in which the torque is transmitted from roll segment to roll segment through flexible gear-type couplings. The shaft includes a plurality of alignment tubes which reduces the angle of misalignment of the gear-type couplings.

Abstract: A shock sub for a well drilling string comprises a tubular housing adapted to be connected to one part of a drill string and a mandrel extending longitudinally into the housing and having an end portion adapted for connection to another part of the drill string. The mandrel and housing are shaped to define a non-circular annular cavity there between when assembled together. A compressible elastic metallic spring means is positioned in and substantially fills the non-circular annular cavity and is compressible longitudinally, radially and circumferentially to absorb longitudinal, radial and torsional vibration and impact loads and to transmit rotary movement between said housing and mandrel for imparting rotation from one part of the drill string to the other part connected by the drill sub. The spring means is preferably a knitted wire fabric or rope compressed into a compact mass capable of spring deflection in longitudinal, radial and circumferential directions relative to said shock sub assembly.

Abstract: A driving device for rolls in high speed rolling mills and the like, designed to effect the centering of a drive shaft element and of a driven shaft element and the transmission of torque. In a hollow space defined in a shaft assembly comprising two shaft members coupled together as by a spline connection for rotation as a unit, a spring is disposed which acts to axially extend the drive shaft. Either the inner bottom surface of a driven fitting yoke coupled to one end of the shaft assembly through a joint member and loosely fitted on the driven shaft element or the end surface of the driven shaft element is provided with a conical projection axially aligned with the fitting yoke and the driven shaft element while the other is provided with a conical opening adapted to tightly engage the conical projection, thereby achieving automatic axial alignment between the driven fitting yoke and the driven shaft element and eliminating the problem of the rotational vibration of the drive shaft.

Abstract: A connecting rod assembly has universal joints at the ends of a connecting rod of tubular construction, the universal joints being lubricated by grease contained in the tubular rod and retained in the universal joints by flexible boots disposed about the exterior of the universal joints, the tubular rod containing a pair of pistons between which fluid from exterior of the universal joints can enter the tubular rod and equalize the pressure in the universal joints with the external fluid pressure.The connecting rod assembly is installed between the rotor of an in-hole fluid motor of the progressive cavity type and the drive shaft of a bearing assembly for a motor driven drill.

Abstract: In a torque adjuster including a rotary shaft, a first handle or knob fitted to the rotary shaft for rotating the same shaft, a stationary member, and a first friction member provided between the first knob and the stationary member, the first knob being movable axially of the rotary shaft to vary the force with which the first knob urges the friction member, thereby adjusting the torque of the first knob, the diameter of the rotary shaft is made uniform over a predetermined range thereof so that the first knob is freely movable axially of the rotary shaft. A second friction member is provided to couple the first knob and the rotary shaft with a friction force greater than the friction force created between the first knob and the stationary member by the first friction member so that the rotation of the first knob is transmitted to the rotary shaft without any loss.

Abstract: A homokinetic joint assembly for transmitting torque between a pair of shaft members is formed with an outer joint member including an internal cavity defined by an interior wall having grooves formed therein and including generally spherically shaped portions. The arrangement of the grooves is such that each groove of the inner joint member cooperates with the groove of the outer joint member to jointly receive in engagement therebetween one of the ball members, with the respective cooperating grooves of the inner and outer joint members being formed to define therebetween a jaw-like recess for the ball members which expands toward the open side of the internal cavity of the outer joint member. The cage is arranged with its exterior wall guided in the internal cavity of the outer joint member and with its interior wall guided along the exterior wall of the inner joint member.

Abstract: A universal joint pivot assembly exhibiting extended life and capable of being inexpensively manufactured. Bushings for receiving trunnion journals are provided with a plurality of upstanding bosses formed by a cold forging process. The boss surfaces are inclined to generate a conical surface, and the ends of the journals are formed at a matching angle. In a preferred embodiment the bosses are comprised by ridges which terminate short of the center of the bushing to form a cavity for receiving an unmachined protrusion at the journal center.

Abstract: A universal coupling or joint is disclosed. The coupling comprises a hollow elongate casing having spherical sockets adjacent each end thereof, and a driving shaft having a spherical ball provided at one end positioned within one spherical socket, and a driven shaft having a spherical ball provided at one end positioned within the other spherical socket, and a torque transmitting member extending between the said spherical balls and in direct rotational engagement therewith. The coupling of the invention minimizes entry of abrasive grit and dirt into the bearing surfaces thus enabling long life and durability, and the provision of the outer casing which is not directly driven by the driven members of the unit provides a safety factor not before possible.

Abstract: A shaft of selected material and of a given desired nominal diameter corresponding to nominal desired shaft extension diameter for a particular motor is cut and then treated with optional operations such as chamfering and washing; grinding; machining of flats; and phosphatizing to inhibit rust. A first accessory member is assembled in a predetermined position by heat shrinking on the shaft; and a rotor body is assembled with the shaft. A second accessory member is also assembled by heat shrinking. For ball bearing applications, concenntric journals are turned on accessory members for the inner races of bearings after the accessory members have been assembled with shaft. The inner races of ball bearings are lightly pressed onto the journals, and rotors, end frames, and stator are assembled. The concentric journals permit press fitting of ball bearings without substantially exceeding 0.0005 of an inch press fit and thus avoid damage to the bearings.

Abstract: A torsional vibration damper and method and apparatus for its manufacture. The outer inertia member carries a radially inwardly extending web, the web sandwiched by a pair of elastomer members. A two-piece hub sandwiches the elastomer members, the two hub pieces being held together as by swaging or by rivets. Tooling for the swaging mode of assembly is shown such that the elastomer members are deformed from an original to a final configuration, and the swaging then accomplished with a single continuous movement. The swaging assembly apparatus for the device includes Belleville springs, the apparatus limiting the maximum force applied to that portion of the hub members controlling the assembled elastomer thickness. The damper configuration facilitates low specific energy dissipation and large elastomer-to-metal interface area to thus tend to lower shear stress in the elastomer. In addition, should the elastomer fail in use, the damper inertia mass is mechanically constrained to remain with the hub assembly.

Abstract: A bearing mount for a wheel driven through a constant velocity universal joint has an inner bearing ring which is axially adjacent to an outer joint member of a constant velocity universal joint and is attached to the outer joint member by a welded joint formed by a low temperature welding process.

Abstract: According to the invention a flexible drill pipe constructed of a closed pitch cylindrical spiral coil of wire rod, a female tool joint is attached to one end of the coil of wire rod and a male tool joint is attached to the other end. A plurality of wire wound flexible shafts are laid through the coil wire rod attaching to the female and male tool joints and enclosing a hollow internal support assembly. The wire wound flexible shafts support the coil of wire rod so it can carry high tension loads and not let it over extend its length. The hollow internal support assembly keeps the coil of wire rod from collapsing under high torsion loads, provides a passage way for drilling fluids to be pumped through the flexible drill pipe, and provides an even distribution of flexibility over the length of the coil of wire rod.

Abstract: A torsional vibration damper for a torque converter lock-up clutch having viscous and spring-damping characteristics during the initial relative movement between the input and output members of the clutch and a spring-damping characteristic during further relative movement. Viscous damping can also be provided during the further relative movement, if desired.