They're still available but they only seem to make them for professional cleaners (hotels etc) in europe. And they get big and you probably don't want them in your home.

You can find that kind of setup on many machines around the home and shop:

Look at https://bissellcdn.blob.core.windows.net/cdn-storage-contain... - the ONLY Mention it makes is "quick release power" but doesn't document how to do it (it's a turn the hook setup).