No one can know everything. That prop, which I heard was called the Butterfly, can also be seen in Suburban Commando with Hulk Hogan and Christopher Lloyd. It was created and rented out by Modern Props. I got to hold it once during a tour of their warehouse around 1985-1986. A friend and I were invited based on the quality and accuracy of the Proton Packs we'd built and were wearing at a SoCal convention of some sort.
Shawn Marshall
Portland, Oregon