Abstract: A tearaway dummy plug (10) for electronic assemblies with power receptacles giving evidence of the assemblies use. A dummy plug made of a single injection molded piece having pin grips (20 and 22) for griping the prong and a base (18) shaped for a snug fit with the housing when installed in the power cord receptacle. A pull tab (12) for pulling the dummy plug out of the receptacle. A tearaway region (14 and 16) formed as a weakness in the dummy plug to break when the tab (12) is pulled to remove the dummy plug from the receptacle.

Abstract: A shape memory actuator capable of high torque densities capable of being used on space applications and other fields. The actuator is made of two concentric tubular shape memory alloy (SMA) members (12 and 14) torsioned along their longitudinal axis with ends constrained relative to each other. One end of the actuator is constrained while the other is the output. A heater (16) is located inside the inner SMA member (12). A heater (18) is located on the outside of the outer SMA member (14). The unconstrained end is caused to rotate between positions by applying current to the appropriate heater.