Piston device for dispensing controlled amounts of pasty substances

Abstract

A piston device for dispensing controlled amounts of pasty substances, such as ice creams, that is connectable to the freezing chamber of an ice cream making machine. Said device comprises a cylindrical closing element mounted rotatably about its axis in a mating cradle support, recessed into which cylindrical closing element is a cylinder that extends diametrically across said closing element and is closed at the bottom by a wall containing a hole, while a piston slides axially inside the said cylinder, and in which the said cradle support contains a communicating channel leading to the freezing chamber of the ice cream making machine, so that in one angular position of the cylindrical closing element the channel of the support is lined up with the hole of the bottom wall, while in a second angular position of the cylindrical closing element the hole of the bottom wall of the cylinder is lined up with a dispensing hole provided in the said cradle support, while the side wall of the cylindrical closing element is provided with an elongate passage which in a third position of the cylindrical closing element connects together the feed hole and the dispensing hole of the support, bypassing the said cylinder.

Dependencies are inferred from the claim text.