Elbow joint constituted by a pair of hinged arms in a single piece with corresponding clamping collars

摘要

Elbow joint for connecting rigid tubular sections (C, B) by means of flexible tubular sections (D), constituted by two pairs of arms (6, 6a) mutually articulated; each pair of arms being in a single piece with a clamping collar (7a) or each arm being in a single piece with a semi-collar (11, 11a), obtained from a flat plate (A), to constitute orientatable piping, particularly devices for the localised suction of fumes, dust and/or vapours, however these may be generated.