It seems to give a misunderstanding. The sketch is part of a russian patent. And it is embedded in a general view to autloaders. There are no assignments to a special tank.
Yeah, I read Kotsch's explanation and saw the patent, but it seems weird to me. I made this GIF of a T-90A (from the TV Zvezda show, episode "diary of a tanker"), and it doesn't show what Kotsch described.
Pardon me, but I'm not sure what you mean. Do you mean that the machanism from the patent was just a prospective solution that was not actually used? Or do you mean that the patented autoloader can be used in any T-72/90 tank and not just the T-90A?