Abstract: A manufacturing process for making different expansion tanks for different cooling systems and/or for different engines, each of the expansion tanks having an inlet mouth and comprising: a plastic shell comprising a) a wall defining a cavity for containing a coolant liquid; and b) at least one collar at the inlet mouth, the collar being outwardly projecting from the wall. Each of the expansion tanks further comprising a tubular insert engaging the collar and defining the inlet mouth; the tubular insert being made of plastic material; and retention means which hold the tubular insert relative to the collar. The process comprising making shells identical in shape and size, for all of the expansion tanks; and making inserts that differ in the value of their inner diameter; each inner diameter value being determined at the design stage depending on the type of cooling system and/or the type of engine.

Abstract: An expansion tank for a cooling system of a motor vehicle has an inlet mouth and is provided with a shell in plastic material having a wall which defines a cavity for containing a coolant liquid; the shell has, in addition, a projecting collar, at the inlet mouth, and a first inner tubular wall, which protrudes downwards into the cavity and defines a passage with a lower outlet opening, to make the coolant liquid flow into the cavity; the shell has, in addition, a second tubular wall, projecting upwards into the cavity and defining a compartment which is vertically aligned with the passage and has an upper overflow opening vertically arranged at a height that is equal to or greater than that of the outlet opening.

Abstract: A manufacturing process for making different expansion tanks for different cooling systems and/or for different engines, each of said expansion tanks having an inlet mouth and comprising: a plastic shell comprising a) a wall defining a cavity for containing a coolant liquid; and b) at least one collar at said inlet mouth, said collar being outwardly projecting from said wall. Each of said expansion tanks further comprising a tubular insert engaging said collar and defining said inlet mouth; said tubular insert being made of plastic material colored in mass; and retention means which hold said tubular insert relative to said collar. The process comprising making shells identical in shape and size, for all of said expansion tanks; and making inserts that differ in the value of their inner diameter; each inner diameter value being determined at the design stage depending on the type of cooling system and/or the type of engine.

Abstract: An expansion tank for a motor-vehicle cooling system has an inlet port and an outlet port and is provided with a plastic shell having a container and two protruding collars, respectively at the two ports; at least one of the collars defines a seat, which is engaged by a tubular insert coaxial to the collar; elastically deformable teeth are provided for snap-coupling the tubular insert and the shell to each other and axially retaining the tubular insert in the seat.

Abstract: An expansion tank for a cooling system of a motor vehicle has an inlet mouth and is provided with a shell in plastic material having a wall which defines a cavity for containing a coolant liquid; the shell has, in addition, a projecting collar, at the inlet mouth, and a first inner tubular wall, which protrudes downwards into the cavity and defines a passage with a lower outlet opening, to make the coolant liquid flow into the cavity; the shell has, in addition, a second tubular wall, projecting upwards into the cavity and defining a compartment which is vertically aligned with the passage and has an upper overflow opening vertically arranged at a height that is equal to or greater than that of the outlet opening.

Abstract: A seat backrest for a motor vehicle has a structure, which supports a padding covered by a cover; the structure has a rear plate provided with a coupling portion, to which an end of the cover is fixed along a peripheral edge of the plate itself; the plate is fixed to a front frame by means of a snap-on connecting device having a plurality of deformable appendages, which are carried by the plate in positions that are spaced apart from one another; the appendages are part of respective brackets, which are fixed to the plate and have respective stiffening portions, which are arranged at the coupling portion.

Abstract: An expansion tank for a motor-vehicle cooling system has an inlet port and an outlet port and is provided with a plastic shell having a container and two protruding collars, respectively at the two ports; at least one of the collars defines a seat, which is engaged by a tubular insert coaxial to the collar; elastically deformable teeth are provided for snap-coupling the tubular insert and the shell to each other and axially retaining the tubular insert in the seat.

Abstract: A seat backrest for a motor vehicle has a structure, which supports a padding covered by a cover; the structure has a rear plate provided with a coupling portion, to which an end of the cover is fixed along a peripheral edge of the plate itself; the plate is fixed to a front frame by means of a snap-on connecting device having a plurality of deformable appendages, which are carried by the plate in positions that are spaced apart from one another; the appendages are part of respective brackets, which are fixed to the plate and have respective stiffening portions, which are arranged at the coupling portion.