US Patent 11912221 Actuator devices and assemblies for automotive safety devices

An actuator device with an actuator cup having a first end and a second end. The actuator cup defines a storage chamber containing a pyrotechnic material to produce gas. The storage chamber also includes a coolant. At least one electrical connection coupled to the first end, the electrical connection in reaction initiating communication with the pyrotechnic material. The second end of the actuator cup includes a concave surface before actuation of the pyrotechnic material and during the actuation of the pyrotechnic material the second end transitions from the concave surface to a convex surface.