A lift assembly including a lifting structure, a lifting arm, a yoke structure fixed to the lifting structure, a pin pivotally coupling the lifting arm with the yoke structure, and an integrated anti-rotational assembly associated with both the yoke structure and the pin. The lifting structure can actuate relative to the ground between a lowered position and a raised position. The lifting arm is configured to actuate with the lifting structure between the lowered position and the raised position. The integrated anti-rotational assembly can inhibit rotation of the pin relative to the yoke structure about the longitudinal axis of the pin.

According to certain embodiments, a foldable electronic device comprises: a first housing; a second housing; a hinge structure coupling the first housing and the second housing; and a flexible display, wherein at least a first portion of the flexible display is disposed on the first housing and a second portion of the flexible display is disposed on the second housing, wherein the hinge structure includes: a fixing member, a first rotary member coupled to the fixing member; a second rotary member coupled to the fixing member; a first rotary shaft, wherein one end of the first rotary shaft is held on one side of the fixing member; a second rotary shaft, wherein one end of the second rotary shaft is held on an opposite side of the fixing member; a first arm part coupled to the first rotary member, with the first rotary shaft is inserted therein; a first cam structure disposed is in the first arm part; a second arm part coupled to the second rotary member with the second rotary shaft inserted therein, a second cam structure disposed in the second arm part; and a first cam member including a first cam, with the first rotary shaft inserted in the first cam, and engaged with the first cam structure, a second cam, with the second rotary shaft inserted in the second cam, and engaged with the second cam structure, and a cam body connecting the first cam and the second cam.

An artificial joint is provided. The artificial joint may comprise: a first joint member including a first bone replacement part, and a (1-1).sup.st branch and a (1-2).sup.st branch branched from opposite sides of the first bone replacement part; a second joint member including a second bone replacement part, and a (2-1).sup.nd branch and a (2-2).sup.nd branch branched from opposite sides of the second bone replacement part; a first main string connecting one side of the (1-1).sup.st branch and one side of the (2-1).sup.nd branch; a second main string connecting the one side of the (1-1).sup.st branch and one side of the (2-2).sup.nd branch; a third main string connecting one side of the (1-2).sup.st branch and the one side of the (2-1).sup.nd branch; and a fourth main string connecting the one side of the (1-2).sup.st branch and the one side of the (2-2).sup.nd branch.

A self-aligning support incorporates a support attachment fitting and a rotatable pin assembly having a primary load pin coupling the support attachment fitting to an attachment support, and inboard and outboard attachment claws engaged to end portions of the primary load pin. The rotatable pin assembly is configured to rotate relative to the support attachment fitting. At least one fuse pin extends through the primary load pin to limit translation of the primary load pin relative to the inboard and outboard claws.

A hinge mechanism includes a hinge assembly connected with a first body and a second body to rotatably connect the first body and the second body, and a torque assembly mounted at the first body and connected with the hinge assembly. When the first body and the second body are relatively rotated to drive the hinge assembly, the hinge assembly drives the torque assembly to cause at least a part of the torque assembly to translate relative to the first body to provide a torque for the hinge assembly.

A connection mechanism includes fixing seats, rotary seats, and transmission gears. Each of the fixing seats includes base and shaft holes provided at two sides of the arc-shaped base. The rotary seats and the transmission gears are clamped between two adjacent fixing seats. Each of the rotary seats includes a seat body, an arc-shaped groove longitudinally penetrating through the seat body, and a teeth structure formed by laterally extending from a middle portion of the seat body below the arc-shaped groove. Each of the two transmission gears includes a rotation shaft and a gear fixed onto the rotation shaft and engaged with the teeth structure, wherein the rotation shaft passes through the arc-shaped groove and includes two ends respectively limited inside the shaft holes of two adjacent fixing seats.

A bearing part includes a quench-hardened layer in a surface of the bearing part. The quench-hardened layer includes a plurality of martensite crystal grains. A ratio of a total area of the plurality of martensite crystal grains in the quench-hardened layer is more than or equal to 70%. The plurality of martensite crystal grains are classified into a first group and a second group. A minimum value of crystal grain sizes of the martensite crystal grains belonging to the first group is larger than a maximum value of crystal grain sizes of the martensite crystal grains belonging to the second group. A value obtained by dividing a total area of the martensite crystal grains belonging to the first group by the total area of the plurality of martensite crystal grains is more than or equal to 0.5.

A system for securing a pivoting bolt to a vehicle frame, on which, in a mounted state, a link element, is mounted pivotably, including a sleeve element for receiving the pivoting bolt, wherein a collar region is provided or formed on the sleeve element, wherein the collar region is configured in such a manner that, in a mounted state, the collar region interacts in a form-fitting manner with a vehicle-frame-side engagement region, including a protrusion or an indentation, in order to avoid twisting of the sleeve element.

A pivoting connection device connects at least two components and comprises a guide ring, positioned in an orifice of a first branch of a clevis, which guide ring has a tubular body together with a flange pressing against the interior face of the first branch, a cylindrical shaft connecting the clevis and an arm, having a first end stop, configured to prevent translational movement of the cylindrical shaft in a first sense and a second end stop configured to prevent translational movement of the cylindrical shaft in a second sense, the opposite to the first sense, an immobilizing system configured to immobilize the cylindrical shaft in terms of rotation with respect to the guide ring, the guide ring comprising a first longitudinal groove or slot configured to allow the first end stop to pass.

A hinge assembly includes a rotation shaft, a first connection member provided at the rotation shaft, a second connection member provided at the rotation shaft, located at one side of the first connection member along an axial direction of the rotation shaft, and configured to rotate around the rotation shaft, and an adjustment member connected to the rotation shaft and configured to press the second connection member along the axial direction of the rotation shaft.