Abstract: An electro-thermal actuator device (1) comprises a casing defining a cavity (Z1, Z2) in which there are arranged a thermal actuator (6), an electric heater (10), at least a part of an actuating shaft (3) and at least a part of two electric terminals (11, 12) for supplying the heater (10). The casing is formed by two half-shells (2A, 2B) mutually coupled along two facing surfaces of junction (S), each surface pertaining to a respective half-shell. Sealing means (15, G) are provided, which are operatively arranged between the two surfaces of junction (S) and cooperating with a respective half-shell (2A, 2B) for hermetically insulating at least a part of the inner cavity (Z1, Z2) from the external environment.

Abstract: An electro-thermal actuator device (1) comprises a casing defining a cavity (Z1, Z2) in which there are arranged a thermal actuator (6), an electric heater (10), at least a part of an actuating shaft (3) and at least a part of two electric terminals (11, 12) for supplying the heater (10). The casing is formed by two half-shells (2A, 2B) mutually coupled along two facing surfaces of junction (S), each surface pertaining to a respective half-shell. Sealing means (15, G) are provided, which are operatively arranged between the two surfaces of junction (S) and cooperating with a respective half-shell (2A, 2B) for hermetically insulating al least a part of the inner cavity (Z1, Z2) from the external environment.

Abstract: An actuator of the thermal type has a body, wherein a chamber is defined for containing a material which expands as a function of the temperature of said body; a shaft, having one end directly dipped into said material, the shaft being movable as a function of the increase and decrease of volume of said material; a closure and sealing device for the chamber and the shaft, including at least a closure element, configured as a washer or similar element, which is apt to cooperate mechanically with said body, at least a first sealing element, such as a bushing or similar element, which is apt to perform a first sealing on said shaft, and at least a second sealing element, such as a ring or similar element, which is apt to perform a second sealing on said shaft.