Thanks Compositepro, your help is very much appreciated. I went down a similar path with Google and trying to "name" the pump as best I could. I ended up trying keywords like dual and single, opposing, screw, Archimedes, submersible, paint pump. I even Googled the images and cropped down to the single upright image and Image Googled that. That was a waste. It called all 3 images a tire, and the single image a wire. Unless someone who knows what it is replies, I think I'm done, will plead ignorance to the customer, and, if requested, will recommend a commercially available choice.
Good luck,
Latexman
To a ChE, the glass is always full - 1/2 air and 1/2 water.