This could change SCUBA as we know it.

[August]

This is some really cool stuff!

http://themindunleashed.org/2014/01/...nderwater.html

Revolutionary Scuba Mask Creates Breathable Oxygen Underwater On Its Own

[Tango589]

That sounds cool, but wouldn't you need some sort of emergency back-up in case you were down deep and the device failed?

[Schroeder]

Originally Posted by Tango589

That sounds cool, but wouldn't you need some sort of emergency back-up in case you were down deep and the device failed?

Do you have one for your regular scuba gear?

[August]

Originally Posted by Schroeder

Do you have one for your regular scuba gear?

Indeed. Backup in such an unforgiving environment is an absolute must.

My question is how they're gonna get around oxygen toxicity under pressure.

[Aktungbby]

Originally Posted by Tango589

That sounds cool, but wouldn't you need some sort of emergency back-up in case you were down deep and the device failed?

A pony leg tank strapped next to the ankle knife; Gives you 5 to ten minutes extra. Actually had to do a hundred foot ascent off Maui with no air (stupid assigned partner)...by the book...so you don't embolize in the alveoli! Get calm, look up to straighten passages, and don't rise faster than the bubbles and Don't stop breathing in and out(exhaling is critical) even if just to rebreathe the residual amount in your own lungs. since most of my older buddies and instructors have eventually gotten bends, I just keep it above 30 feet these days so the nitrogen time is not a factor. Still wear my SEIKO dive watch after 33 years too. And still have a SCUBA-PRO AIR-TWO double regulator for any 'buddy breathing' panic situations. I'm a heavy breather, not a 'sipper' so I use the large Aluminum tank. Would screw up my diminished courage though, to use Heli-ox to dive the Jersy coast U-boat wreck. Dove my first 100' footer on the Hannah Hooper? off Bonaire, Dutch Antilles some decades ago; torpedoed by a U-boat. I do the CA Channel Island occasionally for night spiny lobster(red lamp with net bag) and fresh scallops-pure sushi on the aft-deck while still in my neoprene suit...YumAugust has got it though, pure O past 1 atmosphere (33') causes convulsions whereas normal air at 100' only nitrogen narcosis...

[Jimbuna]

Originally Posted by August

Indeed. Backup in such an unforgiving environment is an absolute must.

I'm certainly no expert on diving but I totally agree and have never went diving (in my younger days) without backup.

[Wolferz]

It would be cool to use in the pool. Down deep requires exotic mixtures.
Too rich for my wallet.

[Tango589]

Maybe this new fandangled mask is best suited to footling about in shallow waters?

[Skybird]

Funny. Because when I was at school I once wrote a mild scifi story about the future undersea life of mankind - and described a breathing device that essentially only was a mouthpiece with a small electric pump that filters oxygen out of the water. Essentially the thing that they realised now, I even had a look on mind that was not too different from what I see here. The teacher was not convinced, saying that the idea that the breathing under water would not be restricted by oxygene reserves but the duration of a micro-battery was "absurd".

Hey, Mr. Teacher! We had button cells for clocks already back in the 80s!

I will sue these guys for stealing my idea.

[Gargamel]

Actually, A heli-Ox mix isnt out of the question, it'd just let you take more Helium with you.

Like AK said, I'm not a sipper either, so buddy-breathing at the bottom of a tank scares me. I've been so low on air before that my tank was less dense than the water, forcing me to hold on, upside down with a totally empty vest, to the anchor line on my deco stop.

And Yes, I too wear a dive watch, don't totally trust computers, and still manually log my hours.

Plan the Dive, Dive the Plan.

[Gargamel]

Originally Posted by Skybird

Funny. Because when I was at school I once wrote a mild scifi story about the future undersea life of mankind - and described a breathing device that essentially only was a mouthpiece with a small electric pump that filters oxygen out of the water. Essentially the thing that they realised now, I even had a look on mind that was not too different from what I see here. The teacher was not convinced, saying that the idea that the breathing under water would not be restricted by oxygene reserves but the duration of a micro-battery was "absurd".

Hey, Mr. Teacher! We had button cells for clocks already back in the 80s!

I will sue these guys for stealing my idea.

You may be able to negate their patent under prior art rules lol.

[Gargamel]

Originally Posted by Aktungbby

There is an upside to being an older "naturally insulated' diver...ya almost never get cold, but it takes thirty pounds of lead to neutralize all the buoyancy in a suit (32 degrees) at 100'! And annoying unobservant do-gooders do try ta roll ya back in while your recovering from lumbering up from the surf!

Ahhhh! So true!

[Jimbuna]

Originally Posted by Gargamel

Ahhhh! So true!

Sadly but playing to the audience

[August]

Again though, oxygen is deadly at depth. Unless there is a way to add helium or other inert gas the use of this gizmo would be limited to 15' or less.

[Gargamel]

Originally Posted by August

Again though, oxygen is deadly at depth. Unless there is a way to add helium or other inert gas the use of this gizmo would be limited to 15' or less.

It's almost useless, given your point, for recreational divers. Air is 22% O2, 75% N2, and 2% CO2, plus some other rubbish (I'm off with those numbers, i just forget the exact amount of N2). If you remove the O2, you're only saving 22% volume in compressing the air you'd have to mix. The expense of doing that for a rec diver is not worth it, when a tank of compressed air is almost free. Heli-ox though..... It'd save ya a whole tank IIRC.