Abstract: Gear pairing of a transmission with a first gear and with a second gear engaged with the first gear, whereby the first gear, in comparison to the second gear, is manufactured from a material that is less elastic or less soft, and whereby the first gear and the second gear have different normal target base pitches.

Abstract: A ball screw nut having a tubular sheet metal body with a thread profile and being optionally encapsulated in plastic. This sheet metal body is formed of a sheet metal part that includes the thread profile and a ball-returning piece inserted therein, which is designed as an additional sheet metal part.

Abstract: Medical instrument (60, 160, 260, 360) comprising at least one first, second and third joint member (71, 72, 73), at least two pairs of tendons (90, 190, 191, 192) connected with the same joint member and adapted to move said third member (73) with respect to said second member (72), pulling it; and wherein each of said joint member (71, 72, 73) comprises a main structural body comprising in a single piece one or more convex contact surfaces (40, 80, 86, 140, 180), all said convex contact surfaces (40, 80, 86, 140, 180) defining with their prolongations thereof at least partially a single convex volume for each joint member; and wherein the main portion of each tendon is in contact with said jointed device (70, 170, 270) only on said convex contact surfaces; and wherein at least two tendons of said at least two pairs of tendons (90, 190, 191, 192) are in contact with a same convex contact surface.

Abstract: A pair of wedge-shaped pieces are provided in an annular space that is defined between an inner circumferential surface of a holding recess portion and an outer circumferential surface of a bearing holder in two position that are symmetrical with each other with respect to a meshing portion between a worm wheel and worm teeth and an imaginary plane ? that contains a center axis of a worm in such a way as to fill the annular space. Then, an elastic force is imparted to both the wedge-shaped pieces in a direction in which the pair of wedge-shaped pieces move away from the meshing portion in relation to a circumferential direction.

Abstract: In one aspect, a translational parallel manipulator is provided and includes a fixed platform including three guide members. The three guide members include first ends and second ends, and the first ends of the three guide members are all coupled to each other and the second ends of the three guide members are all spaced-apart from each other. The manipulator also includes a movable platform spaced-apart from the fixed platform and three serial subchains coupled between the three guide members and the movable platform. In one aspect, a translational parallel manipulator is provided and includes a fixed platform, a movable platform spaced-apart from the fixed platform, and a plurality of subchains coupled between the fixed platform and the movable platform. At least one of the plurality of subchains includes no more than four one degree-of-freedom joints.

Abstract: Provided is a wire driving device including: wires one ends of which are attached to a movable member; pulleys to which the other ends of the individual wires are secured; driven gears that are coaxially secured to the individual pulleys; a drive gear that is connected to a driving source; and movable gears that are disposed between the drive gear and the individual driven gears and that can transmit the motive power of the driving source to the driven gears from the drive gear. The movable gears are provided in a movable manner so that the movable gears engage with the drive gear and the driven gears when the drive gear is rotated in a direction, and so that the engagements of the movable gears with at least one of the drive gear and the driven gears are released when the drive gear is rotated in the other direction.

Abstract: A medical instrument for guiding a tool into an operating space including a shaft having first and second shaft segments connected to each other in an articulated manner, and an adjustment element arranged on one of the first and second shaft segments so as to be longitudinally movable along an adjustment direction, and adjustable in order to pivot the first and second shaft segments relative to each other. Furthermore, a connection element is provided as being connected in an articulated manner to the adjustment element via a first hinge connection and connected in an articulated manner to the other of the first and second shaft segments via a second hinge connection, such that, by adjusting the adjustment element along the adjustment direction, the first and second shaft segments are pivotable relative to each other. Accordingly, a medical instrument is disclosed that is easy to handle and permits advantageous force support.

Abstract: A robot includes: an n-th arm (where n is at least one integer equal to or greater than 1) that includes a first portion and a second portion having a portion extending in a different direction from the first portion and is rotatable around an n-th rotation axis; and an (n+1)-th arm that is installed in the n-th arm to be rotatable around an (n+1)-th rotation axis as a different axis direction from a axis direction of the n-th rotation axis. The second portion is located closer to the (n+1)-th arm than the first portion. The n-th arm and the (n+1)-th arm are overlapable when viewed in the axis direction of the (n+1)-th rotation axis. The n-th rotation axis and the (n+1)-th rotation axis are separate from each other. A length of the (n+1)-th arm is equal to or less than 80% of a length of the second portion.

Abstract: A bicycle operating device comprises a base member, a switch structure, an operating structure, and a controller. The switch structure comprises a first electrical switch and a second electrical switch. The first electrical switch has a first operated state. The second electrical switch has a second operated state. The operating structure includes an operating member. The controller is configured to respectively generate a first control signal and a second control signal based on a first signal pattern and a second signal pattern. The first signal pattern includes a first combination of the first operated state and the second operated state. The second signal pattern including a second combination of the first operated state and the second operated state. The second combination is different from the first combination.

Abstract: A slew drive includes a housing, a worm shaft having a worm thread carried within the housing for rotational movement, and a torque tube having an outer diameter and a central socket. The torque tube is carried by the housing for rotational movement perpendicularly to the worm shaft and worm thread. A ring gear section having teeth, is carried by the torque tube so that the teeth extend beyond the outer diameter of the torque tube and engage the worm threads. Rotation of the worm shaft rotates the worm threads engaging the teeth of the ring gear section, thereby rotating the ring gear section which rotates the torque tube relative the housing.

Abstract: A force transmission transmits forces received by three levers to an input gimbal plate having three support points. The input gimbal play may in turn transmit the force to a wrist assembly coupled to a surgical tool. A first gimbal support point is supported by a first lever having a fulcrum with one degree of rotational freedom. Second and third gimbal support points may be supported by second and third levers having fulcrums with two degrees of rotational freedom. These fulcrums may include a first axle coupled to the lever and a second axle that supports the first axle and provides the fulcrum for the supported lever. A spring may draw the second and third levers toward one another. The force transmission may include a parallelogram linkage that includes a rocker link pivotally coupled to the first lever and having a flat surface that supports the first gimbal support point.

Abstract: A transmission system for a vehicle, comprising an input shaft which can be connected to a drive source, and an output shaft which can be connected to a load comprises:—a clutch module which has an input that is connected to the input shaft and a first and a second output, as well as first clutch means which are located between the input and the first output and second clutch means which are located between the input and the second output, and gear stage means which are located between the input and the first or second output, as well as—a transmission module which has a first and a second input and an output that is connected to the output shaft, as well as a first sub-transmission which is located between the first input and the output, and a second sub-transmission which is located between the second input and the output,—where the first output of the clutch module is connected to a first input of the transmission module and the second input of the clutch module is connected to the second input of the tran

Abstract: A transmission, in particular a coaxial transmission or linear transmission, comprising a toothing, a tooth holder in which a plurality of tooth segments are accommodated to engage with the toothing, wherein the tooth segments are borne to be radially shiftable relative to the tooth holder, a drive element having a profiling for radially driving the tooth segments borne in a radially shiftable manner, wherein the transmission has inner initial stress.

Abstract: An involute gear is disclosed. A circular base has a surface that includes an inner region and an outer region. A gear tooth extends outward from the outer region of the surface. A shape of the gear tooth is defined by a varying cross-sectional involute profile. Starting from a first involute profile that is in a plane parallel to the surface of the circular base and extending outward from a center of the circular base, each location on the first involute profile is rotated about a corresponding axis while traversing a path defined by a corresponding imaginary ray extending from the center of the circular base to that location in the first involute profile. The corresponding axis is tangential to an imaginary circle that encompasses the inner region of the surface and is perpendicular to the corresponding imaginary ray.

Abstract: An electrically driven device includes a housing, an electric motor with a drive shaft having a first rotary axis and a drive pin connected to the drive shaft eccentrically with respect to the rotary axis, and a driven shaft having a second rotary axis and mounted in the housing for performing a pivoting about the second rotary axis. The driven shaft is coupled to the drive shaft by a gear mechanism including a scotch yoke mechanism converting a rotary motion of the drive shaft into a reciprocating motion of the driven shaft. The scotch yoke mechanism includes a cross slider having a sliding support extending perpendicular to the first rotary axis and receiving the drive pin either directly or through a sliding block with a bearing receiving the drive pin. The cross slider is guided in the housing by at least two pivotable links. The driven shaft is coupled to the cross slider by an arm, converting a rotary motion of the drive shaft into a reciprocating of the driven shaft.

Abstract: There is provided a toroidal continuously variable transmission including an input side disk and an output side disk which are provided to be concentric with each other and rotatable in a state where inner side surfaces thereof face each other, and a power roller which is interposed between the input side disk and the output side disk. At least one of the input side disk and the output side disk is configured as a gear disk which has teeth on an outer circumferential portion thereof. Each tooth on the outer circumferential portion of the gear disk is provided with a protruding portion which outwardly protrudes in a radial direction of the gear disk and has a width narrower than a width of the teeth in an axial direction of the gear disk. A tip end surface of the protruding portion serves as a processing reference of the gear disk.

Abstract: A joint structure includes a fixed member, a rotatable member and a connection assembly. The fixed member includes a housing and a first servo disposed within the housing. The connection assembly is used to connect the rotatable member to an output shaft of the first servo. The connection assembly includes a first flange fixedly connected to the rotatable member and a second flange connected to the output shaft of the first servo and the first flange, and the rotatable member extend from within the housing to an outside of the housing.

Abstract: A power transfer unit is comprised of: a hollow input shaft rotatable about the first axis; an intermediate shaft rotatable about the first axis; an output shaft in mesh with the intermediate shaft and rotatable about the second axis; a clutch coupling the input shaft with the intermediate shaft; an input member rotatable about the first axis and including an eccentric shaft eccentric from the first axis; a fixed member immovable about the first axis; an intermediate member fitting on the eccentric shaft to make an eccentric motion and meshing with the fixed member to make a rotary motion about the eccentric shaft; an output member engaging with and following the intermediate member; and a cam mechanism interposed between the output member and the clutch and converting the rotary motion of the output member into an axial motion.

Abstract: This power transmission device includes a motor, a worm connected to a rotating shaft of the motor, and a worm wheel engaged with the worm and disposed at an operation pedal side with respect to the worm, wherein a biasing member which biases the motor in a direction in which the worm and the worm wheel come in contact with each other when the motor is driven is disposed between the motor and a housing.

Abstract: A rotation damper for a motor vehicle. A flywheel driven via a drive with angular velocity and rotating about an axis of rotation is cardanically mounted via a first bearing element and a second bearing element. The flywheel is rotatably mounted on the first bearing element at the rotational angle and the first bearing element is rotatably mounted on the second bearing element at a first rotational angle of a first axis of the flywheel oriented orthogonally to the axis of rotation, and the second bearing element is rotatably mounted at a second rotational angle of a second axis oriented orthogonally to the first axis. The first bearing element is operationally connected to a shaft drive and the second bearing element can be connected by a means to a wheel carrier of the motor vehicle.