Somebody on that other forum found the patent info,
Seems the charcoal acts like the diamataceous earth in an acetylene tank- the gas gets "absorbed" into the pores of the charcoal, and so it takes much less pressure to keep it in the coal. Sort of like keeping it a near liquid at only 150 msi (ten atmosheres?) Anyhow, the patent says 40 ml of carbon holds enough co2 to dispense the 5l of beer. Or 4 would do for a corny? Or, sell bigger ones? disposables, or rechargables?
Ain't gas physics fun?
So far, I've had more experience thinking than I've had brewing....you don't think they are mutually exclusive, do you?
57 batches so far,
33 wine, mostly Loquat, peach, plum, prickly pear
22 beers and ciders
1 Tequila, from a prickly pear wine experiment that didn't work. I call it "Prickly Heat"