The designer was Ollie Morris, and yes, he died just a few years ago. Ollie was an engineer and partner of Fred's in Offenhauser Equipment Company and designed many of their products. For a few years Ollie also had his own company, OMEC, but I only know of the Cam-A-Go being sold through Offenhauser. It employed three-gear cam drive, with the idler gear shuttled transversely to effect cam timing variation. A few years ago I built a copy of it for a Pontiac V8, but with electromechanical servo drive controlled by input from a tach signal, instead of the hydraulic piston that Ollie used. I wound up having a phone conversation with Ollie, to mitigate any possible patent infringement concerns. He was already retired, but still had machine tools in his basement to "play" with ideas, and we had a very interesting talk. Although I built the system and used it to test-run the engine, I've put it back into storage for now. The whine of the straight-cut gears was louder than I want for a street machine- someday I hope to investigate whether helical gears can be used- the small diameter of the idler might rule that out. The extra nine degrees of cam advance at idle sounded very promising- the hydraulic roller grind was less "lumpy" and throttle response was better. Someday, after wrapping up other projects, I'll get back to it.