I think the design was lifted from a Turner frame - and yeah, that type still works to this day... I had the Giant ATX 990 from about the same era [welded by Linn Kastan i think]This is the only photo I could find of a 95 Jamis Dakar Ultralight. Some joker has put a high rise stem and rearview mirrors on it. That bike was actually a really solid design, even by today's standards. Mine was spec'd out with Shimano XT and all KORE hardware. Even had some red-ano bar ends.
Must be a dozen different frames with that linkage design, which only goes to prove how effective it was.