The combination of 3D printing technology plus the additional dimension of transformation over time of the printed object is referred to herein as 4D printing technology. Particular arrangements of the additive manufacturing material(s) used in the 3D printing process can create a printed 3D object that transforms over time from a first, printed shape to a second, predetermined shape.

An articulating joint for a wind turbine having a tower defining a shaft and a deck provided in the shaft includes a bracket extending from a first end having a fixed connection with the deck to a second end including an opening. A fastener includes a head pivotably connected to the tower and a shaft extending through the opening. A washer connected to the bracket is aligned with the opening for receiving the shaft such that the fastener is pivotable with the washer relative to the opening to allow for relative movement between the tower and the deck.

The combination of 3D printing technology plus the additional dimension of transformation over time of the printed object is referred to herein as 4D printing technology. Particular arrangements of the additive manufacturing material(s) used in the 3D printing process can create a printed 3D object that transforms over time from a first, printed shape to a second, predetermined shape.

A rotating eye bolt assembly with lock mechanism. The assembly includes a threaded bolt having a multi-sided head. A lifting bail includes a pair of opposed legs, a track and a central opening through the track. A bushing having an upstanding cylindrical lip is received in the lifting bail central opening. A lock plate is slidable on the track with the lock plate having an upstanding shoulder engageable with the bolt head. The lock plate is movable between a locked position for installation and removal of the assembly and an unlocked position for use of the assembly.

An articulating joint for a wind turbine having a tower defining a shaft and a deck provided in the shaft includes a bracket extending from a first end having a fixed connection with the deck to a second end including an opening. A fastener includes a head pivotably connected to the tower and a shaft extending through the opening. A washer connected to the bracket is aligned with the opening for receiving the shaft such that the fastener is pivotable with the washer relative to the opening to allow for relative movement between the tower and the deck.

A rotary actuator includes a first interface surface with a plurality of apertures defined therein; a plurality of interface modules, wherein each interface module includes a first portion which releasably engages one of said apertures, and a second portion which protrudes from said first interface surface; a second interface surface which releasably mates with said first interface surface; and a gear train which rotates said first interface surface about an axis.

An attachment point apparatus and system for photovoltaic arrays is disclosed. One embodiment provides a rail system for receiving a PV module, including a first rail, a second rail, a substantially rectilinear double male connector adapted for coupling an end of the first rail to an end of the second rail, and a connector adapted to attach a PV module to the first rail. Another embodiment provides a PV module including a PV laminate, a frame integral with and supporting the PV laminate, and a spanner bar adapted to solely span a width of the PV module, orthogonally connect at various locations along the frame, and attach to a support structure. A further embodiment provides a coupling device for a PV module comprising a first coupling portion adapted to rotatably engage a PV module, and a second coupling portion adapted to rotatably engage a rail.

The invention relates to a method and an arrangement related to a rotator, especially for a work tool supported by an arm, whereby the rotator (10) comprises a stator (20) and a rotor (30). A fastening ring (50) for the attaching of a work tool is separately journalled (D) relative to the stator (20) independently of a bearing (B, C) between the stator (20) and the rotor (30). A driver (80; 180; 280) is used to transfer the rotational movement of the rotor (30) to the fastening ring (50).

An attachment point apparatus and system for photovoltaic arrays is disclosed. One embodiment provides a rail system for receiving a PV module, including a first rail, a second rail, a substantially rectilinear double male connector adapted for coupling an end of the first rail to an end of the second rail, and a connector adapted to attach a PV module to the first rail. Another embodiment provides a PV module including a PV laminate, a frame integral with and supporting the PV laminate, and a spanner bar adapted to solely span a width of the PV module, orthogonally connect at various locations along the frame, and attach to a support structure. A further embodiment provides a coupling device for a PV module comprising a first coupling portion adapted to rotatably engage a PV module, and a second coupling portion adapted to rotatably engage a rail.

The present invention relates to a device for connecting at least one external functional device to an arrangement, wherein the device includes at least one first contact portion and at least one second contact portion for receiving the external functional device between the first contact portion and the second contact portion, and at least the first contact portion or the second contact portion is movable. It further relates to a method for connecting at least one external functional device to an arrangement by using the device of the present invention, as well as an arrangement which includes at least one device of the present invention.