Abstract: A first shaft which is, for example, the output shaft of a clutch, is coupled to a second shaft which, for example, is the input shaft of a transmission, by a splined coupling. The splined coupling includes a first sleeve having internal splines for splining with the first shaft and external splines for splining with the internal splines of a second sleeve which internal splines also spline with the external splines of the second shaft. A first spring extending between the first sleeve and first shaft biases the first sleeve toward the second shaft, while a second spring extending between the first sleeve and second sleeve biases the second sleeve toward the second shaft. In order to decouple the first shaft from the second shaft so that, for example, a clutch may be removed from a drive train without removing a transmission, the first and second sleeves are pushed to a retracted position, collapsing the first and second springs.

Abstract: Difficulty in disconnecting two coupled shafts (38, 40) is avoided through the use of a retractable shaft coupler which includes a sleeve (22) which can engage respective shafts (38, 40) at each of its ends and having at least one spring (28) coaxially positioned inside of the sleeve (22). The spring (28) is sandwiched and contained inside of the sleeve (22) by washers (24, 26) which are retained by splines (32, 34). The construct allows retraction from one of the shafts (40) by moving the tubular member (22) in the axial direction away from the shaft (40) against the bias of the spring 28.

Abstract: Face shock absorber for extracting core-collecting pipes used for the drilling of solid mineral resources, which is incorporated in the drilling unit above the rock-breaking tool. It comprises a housing, the opposite ends of which are connected to a top and a bottom adapter, respectively. The top adapter is threadably connected to the top of the housing, the bottom end of which is provided with face fingers which interdigitate with the face fingers of the bottom adapter, formed in its top end. The bottom adapter is connected via an internal thread in the bottom end to a rock breaking tool inside the housing there are disposed external spring rings and internal spring rings which form a cylindrical spring pack, the top end of which is in contact with the top adapter, while its bottom end is in contact with the top face of a spacing sleeve, which is seated on the top face of a carrying collar forming part of the bottom adapter.

Abstract: A drive shaft adapted for use in driving rolls of rolling mills and the like. It is assembled from a first tubular shaft connected on one end to a first joint member and a second tubular shaft connected on one end to a second joint member, the opposite ends of both shafts being coupled so as to transmit torque and slide axially, as well as a coiled spring assembly provided at the coupling section for biasing the two tubular shafts in axial opposition. The coiled spring assembly has a plurality of coiled spring units and at least one spacer member which is interposed between the two coiled spring units and has a pair of receiving portions into which the ends of the two coiled spring units are fitted so that the two coiled spring units are kept out of contact with the inner peripheral surface of one of the two tubular shafts forming the coupling section and an outer contact portion of each spacer member held in contact with the inner peripheral surface of the one tubular shaft.

Abstract: A gear coupling adapted to be capable of absorbing torsional shock loads between a power driven shaft 1 and a power drive shaft 2 comprises a drive member 3 and driven member 4 which extend from two sides into, and engage with, hollow intermediate member 5 so that the three members rotate in unison. The driven member 3 and preferably also the drive member 4 engage the intermediate member 5 by helical gear teeth 3B, 5A, 4B, 5B and a resilient member 6 such as a bank of disc springs is present between the drive member and the intermediate member. The coupling is arranged do that under the influence of a torsional shock load, the resultant axial separating force urges the intermediate member against the bias of the springs, to thereby reduce any damaging effects of the shock load.

Abstract: An industrial robot comprising a column housing a first group of coaxial hollow shafts rotatably coupled to a first articulated joint positioned at about 60.degree. to the first group of hollow shafts. A second group of coaxial hollow shafts receives the rotating movement from the first articulated joint and transmits it to a second articulated joint, also arranged in slanted relationship at 60.degree.. A third group of coaxial hollow shafts receives the rotating movement from the second articulated joint and transmits it to a third articulated joint which in turn is connected to an end bush supporting implements or operative tools.The invention is of particular advantage thanks to its high mobility and to the particular orientation in the space allowed to the several articulated joints.

Abstract: A sub assembly for connecting a power swivel to a drill string. The assembly includes a telescopic sub having a preloaded spring. The telescopic sub has three discrete positions enabling it to travel in either direction from a normal position. This capability prevents thread damage for both when connecting and disconnecting a drill pipe to the drill string.

Abstract: An intermediate shaft is provided which achieves a sliding connection between an outer part (17) and an inner part (18) inserted into the outer part. Two Cardan joints are formed of axial bores (22, 31). The joint heads (48, 49) are inserted into the axial bores (22, 31) and include grooves (53, 52) which are open on one side. Dog driver bolts (44, 45) engage the open grooves. A helical spring (19) tensions the intermediate shaft (15) between the joints.

Abstract: A drive shaft assembly for providing a drive connection between the power take-off shaft of a tractor and an agricultural implement is formed in two drive shaft parts with one of the parts which is attached to the tractor joint being formed with a coupling sleeve and with the other drive shaft part which is attached to the implement to be driven being formed with a coupling hub engageable and disengageable in the coupling sleeve. The other drive shaft part is also formed with a length adjusting device comprising a pair of spring-loaded telescoping tubes arranged between the coupling hub and the end of the other drive shaft part which is attached to the implement to be driven and, as a result, the disconnecting point of the drive shaft assembly is thus located between the joint which is associated with the tractor and the length adjusting device of the other drive shaft part thereby to facilitate engagement and disengagement of the drive shaft assembly.

Abstract: A drive assembly for the wheel of a motor vehicle having an independent wheel suspension wherein the wheel is connected to a drive source by means of a pair of universal joints connected between the drive source and the wheel transmitting torque therebetween with at least one of the universal joints being of the axially displaceable type. A damping mechanism or shock absorber device is interposed together with the universal joints between the wheel and the drive means and the shock absorber device may comprise either or both of a fluid damping mechanism or a spring damping mechanism.

Abstract: A device for coupling and uncoupling two parts which are movable relative to each other, particularly parts of the drives of vehicles, for instance for high-speed power vehicles, by means of a length-variable guide rod. On the tubular guide rod segment there is arranged a housing having a cylinder chamber in which the cylindrical part of the axially shiftable guide rod segment extends, this cylindrical part being provided with engaging portions for annular pistons which surround it. Two annular pistons are supports for a preloaded coil spring arranged therebetween, and upon pulling or compressive force, one of the spring-loaded annular pistons, depending upon the direction of force, is axially shifted against the preloaded coil spring by the corresponding engaging portion of the cylindrical rod part of the guide rod segment.

Abstract: The universal joint shaft, particularly for a steering column of a motor vehicle, includes a tubular outer shaft, a tubular inner shaft slidably mounted in the outer shaft for axial telescoping movement relative to the outer shaft and engageable for rotation therewith, a bearing between the inner and outer shafts, and a guide tube member between the inner and outer shafts for guiding the inner shaft relative to the outer shaft and transmitting torque between the inner and outer shafts.

Abstract: A coupling for two co-axial torque transmitting shafts having the features of a splined torque transmitting joint (5, 6), a screwed joint (9, 10) for effecting axial engagement of the splined joint, interference members (15, 16) axially movable to a locked position in which unscrewing of the screwed joint is prevented, and a detent (32, 33) for preventing axial movement of the interference members from the locked position, the whole being housed in a readily hand grippable housing 19, hand movement of which effects sequential operation of all the features.

Abstract: A torque transmitting assembly including three telescopically arranged shafts is formed with an interlocking ball device which releasably axially locks the shaft members together. The ball device may include one or more balls which are movable radially of an intermediate shaft member, with the balls locking the intermediate shaft member with an inner shaft member when the balls are in a radially inward position and releasing said axial interlocking when the balls are permitted to move to a radially outward position by engagement within a recess of the outer of the three shaft members. The inner shaft member is formed with a conically shaped attachment member which operates to tend to urge the ball into the recess to release axial interengagement between the inner and intermediate shaft member and to permit the ball to move along the conical surface thereof back to its radially inward position when said locking engagement is to be re-established.