Abstract: A torsional vibration damper includes a common axis of rotation extending along an axial direction, an input part, an output part, rotatable relative to the input part in a limited manner with torque transmission, and a ramp system. The ramp system includes an axially displaceable component, a plurality of rolling elements for converting rotation of the input part relative to the output part into an axial shifting of the axially displaceable component, and a plurality of energy storage elements. The plurality of energy storage elements are arranged distributed along a circumferential direction, extend along the axial direction, and are elastically deformable in the axial direction.

Abstract: A slim type universal joint is used to transmit torque generated by an output/driving shaft and/or rotary motion on a rotation axis on a system of engine vehicles connected thereto into the output/driving shaft of a different axis and allows independent locking of the rotation axis. The slim type universal joint includes a locking hole, a central-lower part, a central-upper part, pin holes, an outer-lower part and an outer-upper part, a first short cap pin, a second short cap pin and a long cap pin.

Abstract: A clutch mechanism includes a first clutch plate retaining circular columnar engagement members and a second clutch plate retaining spherical engagement members. In the second clutch plate, inner retaining holes and outer retaining holes positioned more radially outward than the inner retaining holes are formed. The outer retaining holes are larger in diameter than the inner retaining holes. On assembly of the clutch mechanism, engagement members are selected from small-diameter spherical engagement members corresponding to the small-diameter inner retaining holes and large-diameter spherical engagement members corresponding to the large-diameter inner retaining holes. The selected engagement members are disposed in the corresponding retaining holes, respectively. The maximum rotational torque is greater when the large-diameter spherical engagement members are selectively disposed than when the small-diameter spherical engagement members are selectively disposed.

Abstract: A coupling for axle-suspended installation of a direct drive motor, comprises a wheel axle side adapting flange coaxially fixed with a wheel axle and a motor side adapting flange coaxially fixed with the rotor shaft of a motor, an elastic support rotating assembly, wherein the elastic support rotating assembly is radially connected between the wheel axle side adapting flange and the motor side adapting flange so that the wheel axle side adapting flange and the motor side adapting flange can be coaxially and rotatably connected and bear the weight of the motor along the radial direction through the elastic support rotating assembly, and the wheel axle side adapting flange and the motor side adapting flange are circumferentially elastically connected. It also provides stiffness design method of coupling for axle-suspended installation of direct drive motor.

Abstract: A constant velocity joint having an inner hub, an annular outer hub, a plurality of balls and a shaft connection component, with the outer hub in contact with the shaft connection component. The shaft connection component has, at an end region facing the outer hub, a securing structure which is in contact with a contacting structure of the outer hub. The outer hub contacting structure includes recesses corresponding to the raised portions of shaft connection component. The raised portions engage in the recesses to form a securing structure. The tracks and the recesses of the outer hub are arranged axially in alignment with each other.

Abstract: A propeller shaft as a power transmission shaft includes a CFRP tube formed in a cylindrical shape as a shaft member, wherein a helical layer portion mainly bearing torsional strength and bending strength is made of carbon fiber of first carbon fiber material having a relatively high tensile strength (or a tensile elasticity), and wherein a hoop layer portion that is disposed at least one of inside and outside of the helical layer portion in a radial direction with respect to a rotational axis thereof and that does not bear torsional strength or bending strength is made of carbon fiber of second carbon fiber material having a tensile strength (or a tensile elasticity) lower than that of the first carbon fiber material.

Abstract: A drive shaft which includes a first tube body having one or more first body channels defined through a wall thickness thereof. The one or more channels are configured to increase bending and/or axial flexibility of the first tube body while only allowing for a less than proportional reduction in torsional stiffness of the first tube body. A second tube body can be concentrically disposed relative to the first tube body and connected to the first tube body at a first end portion and a second end portion. The second tube body can include one or more second body channels defined through a wall thickness thereof. The one or more channels are configured to increase bending and/or axial flexibility of the second tube body while only allowing for a less than proportional reduction in torsional stiffness of the second tube body.

Abstract: A crank transmission having a crankshaft for connection to at least one foot or hand crank and at least one gear wheel driven by means of the crankshaft (5) is proposed. A coupling unit is provided between the crankshaft and the gear wheel. Under load, the coupling unit has at least temporarily an angular offset between a crank-side receiving region and an output region connected to the gear wheel for receiving and outputting the torque generated via the crank.

Abstract: A cardan shaft for a tool connected to a motor and provided with a system for checking conditions of use thereof. The cardan shaft has a rotatable shaft, with one or two end cardan joints. One or more sensor members are mounted on the cardan shaft to transmit signals to a data acquisition and data-processing electronic control unit (ECU) mounted on a fixed protection of the cardan shaft. The sensor members measure data such as torque transmitted by the cardan shaft, rotation speed of the rotatable shaft, vibrations of the cardan shaft, temperature of the cardan joint and articulation angle. A system for checking conditions of use of the cardan shaft has a remote node connected to the ECU and mounted on the fixed protection. The remote node acquires, stores and processes data sent to the ECU by the sensor members.

Abstract: A series elastic actuator includes a gear configured to rotate, a mounting recess formed on a first surface of the gear, a plurality of elastic bodies configured to be received in the mounting recess that are made of a non-metal elastic material and spaced apart from each other in a circumferential direction, an output body configured to cover the first surface of the gear, and at least one insertion portion configured to protrude from the output body to be inserted between a pair of adjacent elastic bodies or inserted through the elastic bodies.

Abstract: A hybrid module shaft assembly includes a rotational axis, a housing with a tubular portion, a shaft extending through the tubular portion, a first seal, a first ball bearing, and a plain bearing. The tubular portion has a first distal end arranged on an engine side of the housing, and a second distal end arranged on a transmission side of the housing. The first seal is arranged to seal the shaft to the first distal end, and the first ball bearing is disposed on the engine side adjacent to the first seal to position the shaft in the tubular portion. The plain bearing is arranged at the second distal end to position the shaft.

Abstract: A fixed type constant velocity universal joint has outer joint member track grooves each with a raceway center line that includes an arc-shaped portion having a curvature center that has no offset with respect to a joint center in an axial direction. The track grooves are formed such that adjacent track grooves are inclined in opposite directions. The joint also has inner joint member track grooves that are each mirror-symmetric with a corresponding one of the outer joint member track grooves. When at a maximum operating angle, a torque transmission ball that moves toward an opening side of the outer joint member track groove loses contact with an opening-side end portion of that track groove, and when at an operating angle of 0°, an end portion of a cage projects from the opening-side end portion of the outer joint member in the axial direction.

Abstract: A steering shaft assembly includes a male shaft having a plurality of splines formed thereon, each of the splines terminating at a spline end, wherein each of the spline ends form an angle of about 90 degrees relative to a longitudinal direction of the splines. The steering shaft assembly also includes a female shaft including a plurality of stakes located proximate an end of the female shaft, the stakes retaining the male shaft at an interface between the stakes and the spline ends.

Abstract: A surgical tool including a socket having a housing and an aperture within the housing, the socket configured to receive a ball and a pin at least partially in the aperture. The ball is positioned at least partially in the socket and configured to rotate within the socket, the ball comprising an elongated opening extending through the ball. The pin is coupled to the socket and disposed at least partially in the socket on opposite sides of the socket, the pin including a first longitudinal axis and extending through the elongated opening of the ball between opposite sides of the socket. The ball is configured to partially rotate about the first longitudinal axis of the pin, and partially rotate, about a second axis perpendicular to the first longitudinal axis of the pin, in a plane aligned with the elongated opening.

Abstract: A joint assembly for a vehicle includes an outer race, a fitting, a cap and a stop member. The fitting is disposed in the outer race. The fitting is configured to be axially movable and rotationally fixed relative to the outer race. The cap is connected to the outer race. The stop member is removably received by the cap. The stop member substantially prevents axial movement of the fitting in a direction toward the cap.

Abstract: A hollow shaft includes a cylindrical main body part and an extremity drawn part that is integrally connected to one end of the main body part on the same axis and whose diameter is made smaller than a diameter of the main body part by drawing processing, wherein an inner peripheral face of the main body part and an inner peripheral face of a base portion, which is continuous with one end side of the main body part, of the extremity drawn part are formed as cut faces that are subjected to cutting processing before the drawing processing, and an inner peripheral face of a tip portion, which is continuous with an extremity side of the base portion, of the extremity drawn part is a non-cut face. Accordingly, the hollow shaft can be molded with high shape precision while maintaining a low drawing ratio for an extremity drawn part.

Abstract: A torque transmission device includes a first element, a second element, and a third element which are able to rotate about an axis of rotation; a first spring which is arranged between the first element and the third element; a second spring which is arranged between the second element and the third element; a first supporting seat positioned at a first end of the first spring; and a second supporting seat positioned at a first end of the second spring. The third element includes a torque transfer element directly transferring torque between the first spring and the second spring.

Abstract: A toothed coupling mechanism for an assembly of rotating elements of an aircraft gas turbine engine includes a pair of coupling halves having an axial toothed coupling interface therebetween. Each coupling half has a plurality of splined teeth inter-engaged about an axis for transmitting torque therebetween. A protrusion is located on one of the splined teeth of one of the coupling halves. A splined tooth of the other coupling half comes into contact with the protrusion in a situation of uncoupling of said coupling halves.

Abstract: A system and method for increasing a tooth shear strength without also increasing a torsional rigidity of a flexible sleeve disposed between two hubs of a flexible coupling for transmitting mechanical motion between two shafts includes attaching a stiffening caps to both ends of a flexible sleeve, between the flexible sleeve and the hubs.

Abstract: Disclosed is a protective bellows (1) in the form of a tubular body (2) open at each of its ends, the body (2) having two zones (3, 4) of differentiated cross-section, one (3) of the zones (3, 4) of smaller cross-section called the small base (3) of the body (2) and the other zone (4) of larger cross-section called the large base (4) of the body, the zones (3, 4) being separated from each other by a wall referred to as the deformable outer radial wall of the body (2), this wall (6) extending transversely to the longitudinal axis of the body (2). The outer radial wall (6) of the body (2) is provided, at its zone (12) connecting to the large base (4) of the body (2), with an outer peripheral groove (7) with an outer radial opening (8), this groove (7) having one of its sides (9, 10) and the bottom (11) of the groove (7) projecting from the face (61) of the deformable outer radial wall (6) turned towards the small base (3) of the body (2).