HiTekVagabond (December 31, 1969 at 6:59 pm)

Notice this is a Patent Application and that it has no patent been granted yet. The queue is several years long. The spec does not really explain why the airfoil is novel over previous inventions. My guess is that the Patent examiner may determine that there is nothing novel.

HiTekVagabond (December 31, 1969 at 6:59 pm)

Google for "WIPO Patent Application WO/2008/067593"The base claim is a novel airfoil. The rest is a horizontal Gyromill."1. A wind turbine apparatus characterised by a plurality of elongated turbine blades rotatably mounted about an elongated axis, each turbine blade having an aerofoil shaped profile with a continuously curved outer foil surface and a cupped or cutaway portion on an inner foil surface."

HiTekVagabond (December 31, 1969 at 6:59 pm)

WIPO Patent Application WO/2008/067593Attey, Graeme Scott (8 Nelson Street, South Fremantle, W.A. 6162, AU) Kelvin, Lord. Ernest (Lord and Company, 4 Duoro Place West Perth, WA 6005, AU) DESIGN LICENSING INTERNATIONAL PTY LTD (8 Nelson Street, Fremantle, W.A. 6160, AU)

SolarTony (December 31, 1969 at 6:59 pm)

Looks great, but I did not see any load on it such as an alternator or generator or Gears required. What is the amount of power you expect for a 36 inch diameter drum 4 or 5 feet long? Is there any stats or power curves availible? You should post them.

imikewillrockyou (December 31, 1969 at 6:59 pm)

"Things I can think of that can be patented are improvements of efficiency such as airfoil enhancements, and bearings at each side and maybe methods for attaching it."Well that's true. However, that would have to be a bearing or wing patent not a wind turbine patent. This gyromill still just uses wing lift exactly like a Darrieus Turbine. Putting on it's side is merely a new application not a new invention.

HiTekVagabond (December 31, 1969 at 6:59 pm)

The obvious drawback with the Darrieus and Gyromill is that scaling the turbine probably does not result in any n^2 gains, but only n gains where n is the length of the blade. With a doubling of the blade length, the radial windmills get a 4x gain in power. For these, it's linear.My homeowner's association would not like these any better. If they could just make them look like satellite dishes LOL.

HiTekVagabond (December 31, 1969 at 6:59 pm)

Ahhh but this is a horizontal Gyromill. The Darrieus has vertical curved blades, the Gyromill has vertical blades.Wikipedia has a good article on this: "Darrieus wind turbine"But essentially, the overall concept of most wind turbines has been patented a long time ago and therefore in the public domain already. Things I can think of that can be patented are improvements of efficiency such as airfoil enhancements, and bearings at each side and maybe methods for attaching it.

imikewillrockyou (December 31, 1969 at 6:59 pm)

Not sure what improvement they could cite on this patent beyond what Darrieus already did. I suppose that exact design could be protected much like Ford can't just make exact replicas of a Toyota. But they are both a still just cars. And this is just another Darrieus turbine.

HiTekVagabond (December 31, 1969 at 6:59 pm)

Yes, use an wind-powered alternator, a charge regulator, a set of deep-discharge batteries and an inverter to power your 110v AC stuff.

HiTekVagabond (December 31, 1969 at 6:59 pm)

It's quite the opposite. In 1991, a national wind resource inventory taken by the U.S. Department of Energy startled the world when it reported that the three most wind-richstates — North Dakota, Kansas, and Texas. In these states, wind is actually very reliable and can be used to provide power at a much lower cost than nuclear power.