A method of manufacture may comprise disposing a locking collar nut at least partially around a composite tube, wherein the composite tube comprises a variable diameter portion comprising a first frustoconical portion and a second frustoconical portion, wherein a diameter of the composite tube at an interface between the first frustoconical portion and the second frustoconical portion is a maximum diameter value with respect to the first frustoconical portion and is a maximum diameter value with respect to the second frustoconical portion, disposing a locking wedge at least partially around the first frustoconical portion, disposing an end fitting at least partially around the second frustoconical portion, and coupling the locking collar nut with the end fitting, wherein the locking collar nut circumferentially surrounds the locking wedge disposed around the first frustoconical portion.

A composite tube assembly may comprise a composite tube comprising a radially outer surface having a variable diameter portion comprising a first frustoconical portion and a second frustoconical portion, a locking wedge disposed at least partially around a circumference of the first frustoconical portion, a locking collar nut disposed at least partially around a circumference of the locking wedge, and an end fitting disposed at least partially around a circumference of the second frustoconical portion, wherein the end fitting is coupled to the locking collar nut. A diameter of the composite tube, at an interface between the first frustoconical portion and the second frustoconical portion, may be a maximum diameter value with respect to the first frustoconical portion and may be a maximum diameter value with respect to the second frustoconical portion.

The present invention relates to a screw actuated mechanical tubular elements connection system to connect a first tubular element provided with a screw hole with a second tubular element via a connector assembly adapted to be inserted into the passages of the tubular elements. The connector assembly includes a rigid body with a foot portion, a movable gripping element, a movable screw actuated portion and a transmission between these movable elements. The tubulars connection system is operable such that upon actuation of the screw, in succession the gripping element exerts a pushing force perpendicular to the wall, to provide a gripping connection between the movable gripping element and the inner surface and an engagement between the foot portion and the opposed inner surface, and a pulling force to pull the second tubular element towards the first tubular element.

A locking arrangement for connecting and interlocking rods at a node within a framework includes connection rods and a central node bearing to be engaged from different directions by each of the connection rods at respective mounting ports through plugging each connection rod onto a respective mounting port. The central node bearing is configured with at least one locking element at each mounting port to be actuated between a locked state, in which the at least one locking element resides in an outward position and the respective connection rod plugged onto the respective mounting port is clutched to the central node bearing by the at least one locking element, and an unlocked locked state, in which the at least one locking element resides in an inward position and the respective connection rod is released from the central node bearing.

A connector assembly for engagement with a first member The connector assembly comprises a core element and an engagement sleeve The first member defines a cavity with a contact surface, and an opening to the cavity, which the engagement sleeve is configured to fit within. The engagement sleeve has an opening and passage configured to receive at least part of the core elemen. The core element and engagement sleeve are configured such that when the connector assembly is in a first configuration, the engagement sleeve is slideable relative to the cavity contact surface of the first structural member. The core element and engagement sleeve are also configured such that when, the connector assembly is in a second configuration, the engagement sleeve is locked relative to the first structural member.