Abstract: The present invention relates to the field of wave compensation equipment, and discloses a 6-Dof platform for wave compensation, comprising a soleplate, a 2R1T parallel unit, a 1R2T series unit and an upper platform. The soleplate is installed on a deck of a ship, the 2R1T parallel unit is installed on the soleplate, the 1R2T series unit is installed on the 2R1T parallel unit, and the upper platform is installed on the 1R2T series unit. The invention compensates 6-Dof motion of heave, roll, pitch, sway, surge and yaw of the ship under action of waves. The present invention has the advantages of simple structure, high carrying capacity, easy control and high precision in posture control.

Abstract: A shoring structure for insertion inside a tank through a manway of the tank and for installation under the floating roof of the tank. This shoring structure has: a telescoping upright structure made of detachable elements; and these detachable elements being configured for movement through the manway of the tank. Foldable top and bottom panels are mountable to the telescoping upright structure, the top and bottom panels being also respectively configured for movement through the manway of the tank. The foldable bottom panel being configured for integration of a pallet jack thereto, for movement of the shoring structure in a raised position inside the tank when the top and bottom panels being mounted to the upright structure. In another aspect, there is provided a combination of a shoring structure and a pallet jack incorporated in this shoring structure. Also described is a method of inspecting or maintaining a tank.

Abstract: A connector includes a first connector body with an attachment hole and a second connector body provided with a shaft portion. A keyway is formed in a sidewall of the shaft portion. Moreover, the first connector body includes a pivoting member pivoting by being pressed by the shaft portion rotating inside the attachment hole and an elastic member for returning the pivoting member that has pivoted to an original position. The pivoting member is provided with an engaging portion engaging with the keyway.

Abstract: A seat track mechanism for installing beneath a vehicle seat in order to move the vehicle seat in the forward and backward directions includes a monotrack mechanism, to which a monopost structure and a single rail structure are applied. The seat track mechanism includes a structure for hook-engaging lower and upper rails constituting the mono track mechanism by hook guides. The single rail structure applied to the seat track mechanism is capable of not only reducing actuating force required for operation, but also preventing creation of excessive clearance upon stopping.

Abstract: A frame mountable bracket assembly for hanging and rotating a mirror ball includes a cantilever, which comprises a first element that is coupled to and extends perpendicularly from an upper end of a second element. A pair of couplers is coupled singly to the cantilever proximate to the upper end and a lower end of the second element. The pair of couplers is configured to removably couple the cantilever to a frame, such as a portable truss utilized by a disc jockey. A rotator is coupled to the first element distal from the second element. A fastener that is coupled to the rotator is configured to removably couple to an object, such as a mirror ball, so that the rotator is positioned to selectively rotate the object.