Yes. With all the flat problems I have had over the years, I have pondered various ways to refill my tires without stopping, or at the least, without having to get off the bike, take the pump out, kneel next to the bike on the hot asphalt in the hot air and pump up the tire, put pump away, get on, ride a ways....you get the idea.
The only "practical" way I could find was to use an RF or IR signaller on the handlebars or frame, activated by a button or switch. Each wheel would have it's own "channel", one way or another. That would trigger a simple electronic switch mounted in the wheel itself, with it's own small battery, and that would trigger a solenoid that let air from a very small compressor tank also in the wheel into the tire valve.
The catches were:
1: any tank that would hold enough air for problems I might encounter that needed to be aired up often enough to need a device like this would be fairly large and heavy, and probably not fit in the wheel spoke volume, or possibly even between the fork legs or chain/seat stays.
2: all the hoses and solenoids and whatnot would have to be completely leakproof, or else just having it attached would cause the tire to deflate.
3: The battery, tank, and electronics would all add notable weight to the wheel, and none of it in balance with the rest of it, so riding at speeds higher than maybe 8-10MPH would be an experience best avoided.
There are probably other gotchas I can't even remember right now, but those were the big ones I recall.
I did also try to come up with something like the product in the OP, but I had no way to seal things up well enough to hold under pressure, using existing bike hubs as starting points. I think it could be done with the right machine shop tools and knowledge of air seals and such, using a simple regular hollow-axle bike hub as a starting point.
Doing it with a hubmotor, though, would be problematic.
OTOH, it sure would make "aircooling" it a "breeze".
