In one embodiment, an apparatus includes a first member, a second member configured for coupling with the first member, an authentication module integrated into one of the first or second member, and a locking device operable to lock the second member to the first member, and unlock the second member from the first member upon receiving input from the authentication module. The authentication module is operable to authenticate an unlock request received from an external source.

In one embodiment, an apparatus includes a first member, a second member configured for coupling with the first member, an authentication module integrated into one of the first or second member, and a locking device operable to lock the second member to the first member, and unlock the second member from the first member upon receiving input from the authentication module. The authentication module is operable to authenticate an unlock request received from an external source.

A tie nut of a formwork tie for connecting two formwork elements is secured on a tie rod to prevent inadvertent rotation by way of a form fit coupling that can be axially made to engage therewith.

The disclosure relates to a security-locking device for a winch keyhole, including a housing, a main body and an elastic component. The housing includes an accommodation space, a top surface, a bottom surface, an engagement aperture and a notch. The engagement aperture is embedded in the top surface, the engagement aperture communicates with the accommodation space, the accommodation space passes through the bottom surface, and the notch is disposed between the top surface and the bottom surface. The main body is accommodated in the accommodation space, and includes a receiving seat. The elastic component is sandwiched between the housing and the main body, and includes a fixed portion and an elastic portion. The fixed portion is accommodated within the receiving seat, and the elastic portion is exposed outside the housing through the notch corresponding thereto. When the hosing is placed into the winch keyhole, the winch keyhole is not exposed.

The disclosure relates to a security-locking device for a winch keyhole, including a housing, a main body and an elastic component. The housing includes an accommodation space, a top surface, a bottom surface, an engagement aperture and a notch. The engagement aperture is embedded in the top surface, the engagement aperture communicates with the accommodation space, the accommodation space passes through the bottom surface, and the notch is disposed between the top surface and the bottom surface. The main body is accommodated in the accommodation space, and includes a receiving seat. The elastic component is sandwiched between the housing and the main body, and includes a fixed portion and an elastic portion. The fixed portion is accommodated within the receiving seat, and the elastic portion is exposed outside the housing through the notch corresponding thereto. When the hosing is placed into the winch keyhole, the winch keyhole is not exposed.

A cotter pin with a separation preventing means and a method of manufacturing the same are proposed. The method includes a material cutting step, a heating step of heating a preform resulting from cutting, a first shaping step of forming a dome-shaped head at each of opposite ends of the heated preform, a cutting step of forming segmented shaped bodies, a second shaping step of forming a side groove, a third shaping step of forming a lower groove in a lower end of each of the segmented shaped bodies, a through-hole forming step, and a separation preventing means coupling step. Therefore, the present invention has a technical feature that maximizes work efficiency and productivity and provides economic savings by integrating the separation preventing means and the cotter pin, and by simultaneously making manufacturing two cotter pins in a single process cycle.

A cotter pin with a separation preventing means and a method of manufacturing the same are proposed. The method includes a material cutting step, a heating step of heating a preform resulting from cutting, a first shaping step of forming a dome-shaped head at each of opposite ends of the heated preform, a cutting step of forming segmented shaped bodies, a second shaping step of forming a side groove, a third shaping step of forming a lower groove in a lower end of each of the segmented shaped bodies, a through-hole forming step, and a separation preventing means coupling step. Therefore, the present invention has a technical feature that maximizes work efficiency and productivity and provides economic savings by integrating the separation preventing means and the cotter pin, and by simultaneously making manufacturing two cotter pins in a single process cycle.

A joint bushing that accommodates the dithering and sliding in multi segment wind turbines. The joint bushing includes a self-lubricating liner that is a composite system incorporating woven Polytetrafluoroethylene fibers intermixed with structural reinforcement fibers in a composite matrix. The composite system provides sufficient life without requiring re-lubrication.

A bolt comprising a threaded shaft having at least one helical thread and at least one longitudinal groove, a nut having a tapped hole configured to be screwed onto the threaded shaft, and at least one diagonal slot which includes a first opening end and a second non-opening end. The diagonal slot is inclined from the first end towards the second end in the same direction as the helical thread of the threaded shaft. An anti-rotation device is configured to rotationally immobilize the nut with respect to the threaded shaft and comprises a ring which surrounds at least the threaded shaft and which has at least one first toe configured to be housed in the longitudinal groove of the threaded shaft and in the diagonal slot of the nut, in operation.

A bolt comprising a threaded shaft having at least one helical thread and at least one longitudinal groove, a nut having a tapped hole configured to be screwed onto the threaded shaft, and at least one diagonal slot which includes a first opening end and a second non-opening end. The diagonal slot is inclined from the first end towards the second end in the same direction as the helical thread of the threaded shaft. An anti-rotation device is configured to rotationally immobilize the nut with respect to the threaded shaft and comprises a ring which surrounds at least the threaded shaft and which has at least one first toe configured to be housed in the longitudinal groove of the threaded shaft and in the diagonal slot of the nut, in operation.