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A forming jaw for producing a succession of sealed packages from a tube of sheet packaging material filled with a pourable food product and fed in a direction parallel to its longitudinal axis is disclosed. The jaw includes sealing structure that seals a cross section of the tube; and forming structure that imparts a predetermined shape to the tube between two successive sealed cross sections. The forming structure has first and second surfaces for interacting with the tube and which extend respectively in a direction crosswise to, and in a direction parallel to, the axis of the tube. The first surface has a convex portion which exerts pressure on, to control filling of, the packages being formed.

A sealing device for producing sealed packages from a tube of packaging material fed along a path and filled with a pourable food product, comprising: a frame; a pair of jaws movable cyclically with respect to the frame and along part of the path to grip the tube; ultrasonic sealing means carried by a first jaw to seal the tube; and power means including a primary winding fixed to the frame and connectable to an electric energy source, and a secondary winding carried by the first jaw, supplying the sealing means, and receiving electric energy by electromagnetic induction from the primary winding as the first jaw travels past the primary winding; and the device having transformer means supplied by the electric energy source with a first voltage value, and supplying the primary winding with a second voltage value lower than the first voltage value.

A unit for sequencing and guiding items, in which the items are grouped into batches of one or more items; the unit comprises a first conveyor for advancing the items from an input station to an output station, and a sequencing apparatus cooperable with the items to form the batches and to drive them to the output station; the sequencing apparatus comprises a second conveyor comprising a track and plural movable elements independently moved along the track; the track has a work portion parallel to the first conveyor, and the movable elements include respective interacting portions, adapted to protrude over the first conveyor when the movable elements are advanced along the work portion of the track, and cooperating with the items to drive them to the desired positions along the first conveyor to define the batches and to locate the batches at the desired distances from one another.

There is described a forming jaw for producing a succession of sealed packages from a tube of sheet packaging material filled with a pourable food product and fed in a direction parallel to its longitudinal axis. The jaw has sealing means for sealing a cross section of the tube; and forming means for imparting a predetermined shape to the tube between two successive sealed cross sections, and in turn having a first and a second surface for interacting with the tube and which extend respectively in a direction crosswise to and in a direction parallel to the axis of the tube; and the first surface has a convex portion which exerts pressure on, to control filling of, the packages being formed.

There is described a closure for a sealed container of a pourable food product, comprising a pouring spout defining a pour opening externally closed by a cover portion, a cap fitted to the pouring spout in a removable way, an opening member interposed between the cap and the cover portion of the pouring spout and joined to the cover portion, and a driving mechanism carried by the cap to engage and pull the opening member along a direction transversal thereto upon removal of the cap from the pouring spout so as to detach the cover portion from the neck portion and free the pour opening when the closure is first unsealed by the user.

A gas combustor has a peripheral premix burner, and a central diffusion burner whose nozzle defines an eccentric first channel housing an ignition device, an axial second channel, and a third channel interposed radially between the first and second channel; the gas combustor is controlled, at a first start-up step, to keep the peripheral burner off and to feed a fuel gas stream along the third channel; at a second step, after a given load is exceeded, the peripheral burner is activated, and the gas stream in the central burner continues to be fed along the same channel as at the first step, and is regulated to reduce its flow to a value greater than zero.

In a seawater pipe, a shut-off valve has a supporting body fixed to the pipe; a shutter movable between a forward closed position and a withdrawn open position; and a control member operated from outside the pipe to move the shutter via a transmission; the transmission is isolated in fluidtight manner from the seawater flowing in the pipe by a membrane; and the membrane has two edges, one fixed to the shutter, and the other forced radially between the supporting body and the pipe.

There is described a conveyor for an article handling unit, comprising an endless transport element fed with a plurality of articles at an input station and advancing the articles along a handling path to an output station; the transport element is formed by a plurality of modules, each comprising a supporting member adapted to receive in use a relative article to be handled; each module further comprises a rotating element mounted in a rotatable manner onto the supporting member to produce a change of orientation of the relative article before to release it at the output station.