Abstract: A joint 10 is shown for transmission of torque between an input shaft 12 and an output shaft 14. In the form shown, the joint 10 comprises an outermost helical coil spring 16 and an innermost helical coil spring 18, both of which are connected at their respective opposite ends to the input shaft 12 and to the output shaft 14. The innermost helical spring 18 is arranged to be entirely located within, and co-axially aligned with, the outermost helical spring 16 along the same centerline. The springs 16, 18 are arranged to be counter wound relative to one another to provide delivery of torque in a stabilised manner reflected in a significant reduction in the vibration observed within the joint 10 during use. The joint 10 is also arranged for transmission of thrust (or axial force) between the input shaft 12 and the output shaft 14.

Abstract: A joint 10 is shown for transmission of torque between an input shaft 12 and an output shaft 14. In the form shown, the joint 10 comprises an outermost helical coil spring 16 and an innermost helical coil spring 18, both of which are connected at their respective opposite ends to the input shaft 12 and to the output shaft 14. The innermost helical spring 18 is arranged to be entirely located within, and co-axially aligned with, the outermost helical spring 16 along the same centerline. The springs 16, 18 are arranged to be counter wound relative to one another to provide delivery of torque in a stabilised manner reflected in a significant reduction in the vibration observed within the joint 10 during use. The joint 10 is also arranged for transmission of thrust (or axial force) between the input shaft 12 and the output shaft 14.

Abstract: A joint for transmission of torque between an input element and an output element, the joint including a spring associated with the input and output elements and arranged in use to transfer torque between the elements, and a resiliently deformable member arranged to transmit thrust between the input and output elements.

Abstract: A joint for transmission of torque between an input element and an output element, the joint including a spring associated with the input and output elements and arranged in use to transfer torque between the elements, and a resiliently deformable member arranged to transmit thrust between the input and output elements.

Abstract: A door assembly for a sign display is disclosed which may be readily configured to support graphic indicia of various sizes and shapes. The door assembly includes a door frame having a pair of side rails and a pair of end rails which supports a translucent door panel. The door frame further supports a diffusion panel in spaced relationship from the door panel. A plurality of support channels are releasably retained between the side rails. The support channels are captured between the door panel and the diffusion panel to define a display cell within which the graphic indicia are supported.

Abstract: An inboard/outboard boat drive having a housing with first and second ends and a cavity passing between the housing first and second ends. The first end of housing is pivotally mounted on the boat stern. The drive includes an input drive shaft for coupling to an engine mounted within the boat, an intermediate drive shaft disposed within the housing cavity, a first universal joint coupling the input device shaft and the intermediate drive shaft, together with an output drive shaft coupled to a propulsion element and a second universal joint coupling the intermediate drive shaft and the output drive shaft.