expansion clamp for the connection of estremita'competitors of tubular components for truss structures and so on.

摘要

A clamp for joining hollow tubular members in end-to-end abutting relationship has two stiff elements (11-13) shaped in correspondence to opposed inner wall surfaces of the end cavities of the tubular members and is provided with both elastic means (21) and threaded means (23) for urging mutual separation between the elements (11-13); one of the elements has two truncated right circular cylindrical pegs (15) projecting from its surface for entering corresponding holes in the walls of the tubular members; the threaded means (23) has a conical tip (23A) that enters a conical concavity (25) in the opposite element (13) to lock the elements against relative longitudinal movement when expanded within the tubular members.