Device for the removable locking of a plug to a pipeline fitting
AssigneeI.S.I.F. S.R.L.
InventorMauro Odori
Life of this patent
Estimating the term…
Abstract
The device (1) allows the locking of a plug (2) to a fitting (3) and comprises: two locking blades (10), having the outer edge (10B) in an arc of circumference, arranged symmetrically opposite and coplanar to a annular groove (31) of the plug (2), sliding parallel to the latter; actuation means (4) defined by a toothed pinion (13) with which two racks (120) provided in the locking blades (10) are engaged, determining for the same corresponding and synchronized translations in opposite directions, so that the arched edges (10B) are displaced outwards to engage said annular groove (31), locking the plug (2) to the fitting (3). The toothed pinion (13) has a hexagonal head (130) at the top which is engaged by an operating member (15).
Claims10
A device (1), comprising a plug (2) and a fitting (3) for removable locking together, said fitting (3) applicable for maintenance interventions to a pipe (T) for transport of fluid or gas under pressure and provided with an access mouth (30) arranged with an axis transverse to an axis of the pipe (T);
- said plug (2) having a substantially cylindrical conformation and a section not greater than that of said access mouth (30);
- said device (1) further comprising:
- two locking blades (10), each having an outer edge (10B) shaped as a sector of circumference, arranged symmetrically opposite and slidingly guided by guide means (11) on a plane parallel to an external face (2E) of the plug (2) and coplanar to an annular groove (31) made in an internal cylindrical surface of the access mouth (30), each outer edge (10B) of said locking blades (10) having a curvature with a substantially equal radius to a radius of a bottom of the annular groove (31);
- actuation means (4) provided to act simultaneously on said two locking blades (10), for causing corresponding and synchronized translations in opposite directions, guided by said guide means (11), such that each outer edge (10B) is simultaneously displaced outwards to engage in said annular groove (31) so as to lock the plug (2) to the connector (3), the actuation means (4) provided to act to simultaneously displace said two locking blades (10) to retract inwards to disengage the outer edges (10B) from the annular groove (31) and release said plug (2) from the fitting (3), wherein said actuation means (4) comprise:
- a rotatable toothed pinion (13), supported by the plug (2);
- a rack (120), provided with rack gears in each of said two locking blades (10) so as to engage with and on opposite sides of the toothed pinion (13), the rotatable toothed pinion (13) drivable in rotation in locking and unlocking directions by a control member (130) coaxial and integral with said toothed pinion (13) so that rotation of the toothed pinion causes the racks (120) to simultaneously displace said locking blades (10) in opposite directions within the access mouth (30), so that consequent displacements of outer edges (10B), for respective insertion into said annular groove (31), or disengagement from the annular groove (31).
Dependencies are inferred from the claim text.