Who invented the dive helmets for the movie the ABYSS?

I Remember watching the making of the Abyss on a special Dvd, and I believe they showed how Kirby Morgan, (The Company that Revolutionized Commercial Diving Helmets) Created working helmets for the divers in the movie. Real Commercial Diving helmets have a large viewport for the diver to see out of, but you cannot see inside because of the way it is designed, so they modified it to have a huge Lexan front for the movie and lights inside so the actors faces were visible for the movie, but still looked like a rugged work helmet. They also said that the helmets were fitted with an effortless regulator for breathing, instead of the demand regulators on real work helmets which are a little labouring when working hard... Hoped that helped! Check out Kirby Morgan Dive Helmets to see pic's of real Diving Hard hats