Comments on: Wind Turbine – Rooftop

By: cyberspy034

cyberspy034 — Sun, 12 Apr 2009 11:53:40 +0000

You are so dumb. Its a joke.

By: imikewillrockyou

imikewillrockyou — Sat, 11 Apr 2009 16:33:09 +0000

It’s a cool turbine, except how do you patent a Darrieus wind turbine invented back in 1931 by French inventor Georges Darrieus? It’s just one more Darrieus variant. Maybe it’s day has finally come.

By: HiTekVagabond

HiTekVagabond — Sat, 11 Apr 2009 07:19:36 +0000

Patents expire in 17 years. You have to significantly improve or alter the state of the art to get patent protection. In return for the claims, the patent includes a spec that teaches readers of the patents the extensions to the state of the art.

By: HiTekVagabond

HiTekVagabond — Thu, 09 Apr 2009 14:42:16 +0000

Solar-thermal can. Solar-thermal takes the sun’s heat to heat energy storage. In turn, energy is produced from the energy storage medium. Electrical demand is less at night, so it makes sense to cut back on the amount produced. Much of the power produced by nuclear power plants 24×7 is wasted because it’s not consumed at night.

By: HiTekVagabond

HiTekVagabond — Mon, 06 Apr 2009 15:29:36 +0000

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-rich
states — 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.

By: HiTekVagabond

HiTekVagabond — Sat, 04 Apr 2009 11:29:46 +0000

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

By: imikewillrockyou

imikewillrockyou — Thu, 02 Apr 2009 04:39:34 +0000

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.

By: HiTekVagabond

HiTekVagabond — Mon, 30 Mar 2009 17:13:33 +0000

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.

By: HiTekVagabond

HiTekVagabond — Fri, 27 Mar 2009 19:03:39 +0000

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.

By: imikewillrockyou

imikewillrockyou — Tue, 24 Mar 2009 11:37:15 +0000

“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.