Abstract: The present invention concerns a steering shaft (4) of a steering column (1) and (4) for a motor vehicle steering assembly (2), wherein the steering shaft (4) includes a cylinder body (11) and a piston rod body (12) inserted telescopically therein, and on one end is connectible with a steering wheel (6) and at the other is connectible via a steering coupling (5) with a steering gear (7). The assembly of the steering shaft (4) can be simplified thereby, that the steering shaft (4) includes at least one (1) pneumatic connection (13), which communicates with a cylinder space (14), which is provided in the cylinder body (11) and which cylinder space is axially bordered from the piston rod body (12), in such a manner, that pressure actuation of the cylinder space (14) drives the piston rod body (12) to extend from the cylinder body (11).

Abstract: A viscous fluid coupling includes a housing rotatably supported to a drive shaft of an engine. An operation plate set in the housing divides a space of the housing into a reservoir and an operation chamber. The operation plate has a communication hole communicating the reservoir and the operation chamber. A rotor fixed to the drive shaft is disposed in the operation chamber. A valve mechanism installed to the operation plate to close and open the communication hole according to ambient temperature of the housing. A driven wheel fixed to the housing is located between the operation plate and the rotor. A torque transmitting section includes a first annular projection concentrically formed on the driven wheel and a plurality of second annular projections concentrically formed on the rotor. The first annular projections are overlappedly adjacent to the second annular projections so as to establish fluid coupling therebetween through the viscous fluid.

Abstract: An impulse torque generator for a hydraulic torque wrench is durable, compact in size and capable of stably generating a large impulse torque while eliminating a blade being inserted in the main shaft. A main shaft has a cam thereon positioned to be slidable in an axial direction without turning against the main shaft. Oil guide holes pass in an axial direction inside the cam. A cylinder receives the base end of the main shaft and the cam, and forms oil chambers to be filled with an operating fluid across the cam. Pins are inserted in the cam groove of the cam, provided projecting from the inner circumferential face of the cylinder. A drive shaft is to be connected to a drive source which rotatively drives the cylinder. A check valve shuts off the circulation of operating fluid between the oil chambers formed across the cam by selectively closing the oil guide holes formed in the cam, depending on the relative rotating angle between the cam and the cylinder.

Abstract: A viscous fluid coupling includes a housing rotatably supported to a drive shaft of an engine. An operation plate set in the housing divides a space of the housing into a reservoir and an operation chamber. The operation plate has a communication hole communicating the reservoir and the operation chamber. A rotor fixed to the drive shaft is disposed in the operation chamber. A valve mechanism installed to the operation plate to close and open the communication hole according to ambient temperature of the housing. A driven wheel fixed to the housing is located between the operation plate and the rotor. A torque transmitting section includes a first annular projection concentrically formed on the driven wheel and a plurality of second annular projections concentrically formed on the rotor. The first annular projections are overlappedly adjacent to the second annular projections so as to establish fluid coupling therebetween through the viscous fluid.

Abstract: A self-actuating thermal disconnect disengages two coaxially aligned shafts if equipment driven by one of the shafts overheats. The disconnect uses the centrifugal force of a molten material as the principal actuation. The disconnect end of a drive shaft has a means for transmitting torque. A disconnect piston having first and second ends is axially movable in a splined cylinder within the driven shaft. In normal operation, a solid mass of fusible material is disposed in the disconnect piston within a cavity defined by the second end of the disconnect piston and an adjacent end of a cavity piston. A means for transmitting torque at the-first end of the disconnect piston couples with the means for transmitting torque at the first end of the drive shaft. If the driven equipment overheats, the molten fusible material bursts out under centrifugal force through the channels.

Abstract: A viscous fluid coupling includes a housing rotatably supported to a drive shaft of an engine. An operation plate set in the housing divides a space of the housing into a reservoir and an operation chamber. The operation plate has a communication hole communicating the reservoir and the operation chamber. A rotor fixed to the drive shaft is disposed in the operation chamber. A valve mechanism installed to the operation plate to close and open the communication hole according to ambient temperature of the housing. A driven wheel fixed to the housing is located between the operation plate and the rotor. A torque transmitting section includes a first annular projection concentrically formed on the driven wheel and a plurality of second annular projections concentrically formed on the rotor. The first annular projections are overlappedly adjacent to the second annular projections so as to establish fluid coupling therebetween through the viscous fluid.

Abstract: A coupling for transmitting torque between two parts which are rotatable relative to one another, which coupling comprises a friction coupling whose friction plates are each non-rotatably connected to the one and to the other of the parts which are rotatable relative to one another, having a pressure chamber which is filled with a highly viscous fluid and which is formed by a housing formed in one of the rotatable parts and by a displaceable piston sealed relative to said housing, and having a pump unit in which there rotates a conveying member connected to the other one of the rotatable parts, wherein a reservoir for a highly viscous fluid is provided in the housing, which reservoir is connected to the pump unit, wherein the pressure chamber is supplied by the pump unit and the piston loads the friction coupling and wherein the pump unit is provided in the form of an internally toothed rotor pump and the conveying member forms an externally toothed rotor which is concentrically connected to the other one of

Abstract: A hydraulic torque impulse generator (16) of the kind having a motor rotated drive member (18;50) formed with a fluid chamber (19;53), an impulse receiving output member (20;51) coaxial with the drive member (18;50) and extending into the fluid chamber (19;53), a hydraulic peak generating mechanism (24-27;54-59) in the fluid chamber (19;53) for producing torque impulses at relative rotation between the drive member (18;50) and the output member (20;51), and a variable volume accumulator chamber (32;64) located in the drive member (18;50) and connected to the fluid chamber (19;53) for compensating for occurring volume changes in the hydraulic fluid, wherein the accumulator chamber (32:64) is divided into a first compartment (40;71) and a second compartment (42;72) by an elastically deflectable membrane (39;73), a passage (43;65) connects the first compartment (40;71) to the fluid chamber (19;53), and the second compartment (42;72) comprises at least partly a yeildable means for biassing the membrane (39;73) to

Abstract: A variable length light weight drive shaft for a rolling mill roll including: a driven first end including a universal joint connecting with an end of a male splined shaft having an axial bore and counter bore and a driving second end including a universal joint connecting with a torque tube and a female spline shaft which engages over the male splined shaft for axial movement. A gas cylinder is mounted in the counter bore adjacent to the second end of the male splined shaft. A cylinder rod extends from the cylinder and is connected to with the universal joint at the driving end. The piston rod includes a self aligning coupler. The gas cylinder and cylinder rod exert continuous outward pressure against the driven and driving ends which maintains them in pressure contact with the driving and driven members while allowing axial movement of the drive shaft.

Abstract: A shock absorber device for inclusion in a tool string to provide rapid shock dissipation for shock forces traveling up or down the string. The device includes a tubular mandrel and an outer casing that forms an annular chamber therearound. At least one annular piston and one or more metering sleeves are formed integral with the outer casing and function to divide the annular chamber into a plurality of annular chambers that are filled with either nitrogen gas or silicone oil under selected pressures. Thus, the mandrel supports the lower tool string resiliently due to the fluid supported annular pistons such that any shock wave traveling along the tool string will be rapidly dissipated at the fluid piston interfaces.

Abstract: An assembly for damping torsional vibrations in the power train between the crankshaft of the engine and the input shaft of the change-speed transmission in a motor vehicle has two flywheels which are rotatable relative to each other against the opposition of a damper system which is at least partially confined in an annular chamber containing a supply of viscous fluid. One flywheel is connected to the crankshaft and the other flywheel is connectable with the input shaft of the transmission by a friction clutch. The damper system can include a hydraulic damper, a mechanical damper and one or more friction generating devices.

Abstract: A hydraulic torque impulse generator comprises a motor rotated drive member (16) including a fluid chamber (18) into which the rear end portion (19) of an output spindle (21) extends to receive torque impulses generated in said fluid chamber (18). The rear end portion (19) of the output spindle (21) carries a radially sliding vane (23) for cooperation with the fluid chamber (18) such that a high pressure compartment and a low pressure compartment are accomplished during a limited portion of the relative rotation between the drive member (16) and the output spindle (21). A seal barrier (43-50) around the output spindle (21) prevents fluid leakage from the fluid chamber (18). The seal barrier comprises a clearance seal (43) between the fluid chamber end wall (38) and a low pressure area which is sealed off to the atmosphere by low pressure seal rings (47, 48, 60).

Abstract: A rotary-elastic oscillation-damping shaft coupling includes a fluid damping arrangement. Transmission of torque from the primary part to the secondary part is accomplished by a disk-like coupling part which extends approximately perpendicular to the axis of rotation. The coupling part is provided on one side with axially-extending projections and recesses arranged in a ring. The lateral surfaces of the projections and recesses are inclined toward one another in a circumferential direction. The coupling part engages similar projections and recesses of the disk-like secondary part, or a coupling disk connected to the latter. Sets of spring elements, preferably cup springs, are arranged laterally on the coupling part. The coupling is filled with damping oil, which is pressed through throttle devices provided under the action of the axially-shiftable coupling disk, from one side of the disk to the other.

Abstract: A torsional vibration absorber device is positioned between two relatively rotatable members. A coupling member has a projection engaging a camming surface on one of the members, the camming surface being slanted circumferentially with respect to the axial direction. A wet type friction clutch is interposed between the coupling member and the other rotary member and is urged in the direction of its engagement upon axial movement of said coupling member, and a spring opposes such movement of the coupling member. A hydraulic oil chamber connected to atmosphere via an orifice decreases in volume upon axial movement of the coupling member.

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: 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.