for everyone who's read chris's reply about the eploding bolts and the fig newtons... well here's the real thing in case you hadn't gone to the patent office website to look at it yourself.
i suppose it could work really well if anyone wanted to spend the time and make it more modern, and test it thouroughly... obviously i'll be sticking with the plates i already own, as for releasing both at the same time, god knows how you'd do that without a linkage rod or some such absurd thing connecting the two bindings.
it seems pretty complicated and bulky but i'm still interested, just by looking at it i can't tell if it works well or not, but here is the link and some pics taken from the patent itself.
earl miller's patent
you have to click on full page images.. and you need a free plugin to view the tiff's, www.alternatiff.com its free and works well, with ablility to save images, small also... i have not recieved any advertisements as a result of installing, it is one of the recommended free viewers on the patent office website help section.
there are more images in the patent, but these are the most generally illustrative, the others are cutaways, more specific, there's a variation with a flat metal tab instead of the nipple shown here