Abstract: The device comprises: a milk feed pipe (11); an air inlet duct (15); a pressurized steam feed pipe (17); an emulsion chamber (41), in which milk and air, drawn by means of the pressurized steam, are mixed and emulsified; along the steam feed pipe (17), a valve to place the steam feed pipe in communication with the outside and to cause emptying of the milk feed pipe.

Abstract: The present invention is a cut-off unit with constant chip volume cutting for machine tools. The cut-off unit maintains a constant chip volume during cutting, which stabilizes friction between the blade of the cutting disk, the teeth of the cutting disk and the chips in between the teeth. In this manner, the working life of the blade and the speed metal bars at the cut-off unit can be controlled for extending the working life of the blade and for increasing the efficiency of time required for cutting or shearing at the cut-off unit. Advancement speed of the cut-off unit, which is guided by a logic-control unit, is continuously and regularly adapted, to keep the volume of chip cut away and accumulated in each gap between the teeth of the blade constant. When cutting a bar, the advancement speed will be higher at the beginning and at the end of the cut, and lower in the central part.

Abstract: Joint-type coaxial connection (10) to connect/disconnect to/from each other two elements (A, B) defining coaxial tubular pipes inside which a respective fluid flows. The connection (10) defines two respective coaxial paths for the passage of the fluid, one internal and one external, able to be selectively opened/closed substantially simultaneously so as to connect pairs (11a, 11b; 12a, 12b) of tubular pipes, respectively inner and outer. In the connection step the two elements (A, B), located coaxial and with the front faces in contact, have a reciprocal approaching travel with the sealing means (44, 45, 46, 47, 48, 49, 50, 51, 52) which close every passage between the inner pipe and the outer pipe, and between the outer pipe and the part of the joint outside the outer pipe, before achieving the reciprocal fluid-dynamic continuity of the two coaxial pipes of the connection.

Abstract: Device to produce ice-cream wherein there is an outer container (11), a cover (26), an inner container (14), a mixing blade (20) including a scraper fin (120), and an evaporator coil (21) located in cooperation with the bottom (17) of the inner container (14) through at least a contact surface (27). The mixing blade (20) is subjected to an axial thrust which keeps the scraper fin (120) pressed elastically at least on part of the bottom (17) of the inner container (14).

Abstract: Joint-type coaxial connection (10) to connect/disconnect to/from each other two elements (A, B) defining coaxial tubular pipes inside which a respective fluid flows. The connection (10) defines two respective coaxial paths for the passage of the fluid, one internal and one external, able to be selectively opened/closed substantially simultaneously so as to connect pairs (11a, 11b; 12a, 12b) of tubular pipes, respectively inner and outer. In the connection step the two elements (A, B), located coaxial and with the front faces in contact, have a reciprocal approaching travel with the sealing means (44, 45, 46, 47, 48, 49, 50, 51, 52) which close every passage between the inner pipe and the outer pipe, and between the outer pipe and the part of the joint outside the outer pipe, before achieving the reciprocal fluid-dynamic continuity of the two coaxial pipes of the connection.

Abstract: Device to produce ice-cream wherein there is an outer container (11), a cover (26), an inner container (14), a mixing blade (20), and an evaporator coil (21) located in cooperation with the bottom (17) of the inner container (14), through at least a contact surface (27). The inner container (14) is axially mobile to assume at least an axial working position correlated to the position of the cover (26) when it is installed on the outer container (11), and is pressed elastically against the evaporator coil (21) by spring means (22) located under the evaporator coil (21).

Abstract: Device to produce ice-cream wherein there is an outer container (11), a cover (26), an inner container (14), a mixing blade (20) including a scraper fin (120), and an evaporator coil (21) located in cooperation with the bottom (17) of the inner container (14) through at least a contact surface (27). The mixing blade (20) is subjected to an axial thrust which keeps the scraper fin (120) pressed elastically at least on part of the bottom (17) of the inner container (14).

Abstract: Device to produce ice-cream wherein there is an outer container (11), a cover (26), an inner container (14), a mixing blade (20), and an evaporator coil (21) located in cooperation with the bottom (17) of the inner container (14), through at least a contact surface (27). The inner container (14) is axially mobile to assume at least an axial working position correlated to the position of the cover (26) when it is installed on the outer container (11), and is pressed elastically against the evaporator coil (21) by spring means (22) located under the evaporator coil (21).

Abstract: Constant chip volume cutting system for machine tools, which includes at least one cut-off phase of a tube or round bar, in which the advancement speed of the cut-off unit, which is guided by a logic-control unit, is continuously and regularly adapted, to keep the volume of chip cut away and accumulated in each gap between the teeth of the blade constant, due to the fact that, when cutting a bar, the advancement speed will be higher at the beginning and at the end of the cut, and lower in the central part.