All Laesie Work is made with head movement!
Most of my inventions get dusty on a shelf because it is not within my capabilities to realize them. That's a shame, so that's why I publish some of them on the internet. My inventions may only be used after written permission. For more information please contact me.

Giesbert Nijhuis


LaesieCushion
A wheelchair cushion to prevent pressure wounds with
(from around 1999)

Pressure wounds can have terrible even deadly consequences. There are lots of wheelchair cushions on the market that are designed to prevent pressure wounds, but I had troubles with all the cushions I tried. They heart me and caused redness, the early stages of pressure wounds. I frequently had to stay in bed to let it heal.
So I then decided to design my own cushion, and I did with success. I've been sitting on my LaesieCushion for about seven years now, without troubles. The cushion feels as if it were filled with gell, but it's actually air, which is of lower weight and not cold.





Read and see more about it here.


SpiderVortex
A method for mixing chemicals so well, it could be similar to the quality of spider dread.
(March 2004)

The quality of natural "products" like animals plants and crystals is often so high because these are build on nano-scale. The structure is organized very fine.
Spider dread is known for it's qualities. We want that too! I've always been inspired by the motions of a vortex. I thought a vortex could mix two ore more chemicals really well. When pulling out some fluid from a tiny tube, a vacuum is created -if the other side is closed. This pressure difference can shoot two chemicals in the closed side of the tube, in a vortex style, mixing them in a very fine and organized fashion. This mixing device can be very small, and multiple mixers can be combined, twisting multiple dreads into one bigger and even stronger one. I guess that's how spiders do it








ZONNEWINDMOLEN


Invention: Sunwindmill
Invention date: 1990
Inventor: Giesbert Nijhuis
Short description: The sun rays heat up a very large area of  heat absorbing surface. This surface warms up air. The warm air wants to rise, but it can not rise because of glass (or plastic ) that's above the whole heat absorbing area. But there is one place where the warm air can rise: a huge & very high chimney. The suction in the chimney can drive a turbine, and the turbine can generate electricity.
Advantages: "green" energy, a renewable-energy power plant.
Problems? There has to be sunlight and not too much wind for it to work well. Solar cells might be cheaper and more efficient. The effect on the environment is unknown.
Original?
The sunwindmill has been an idea of mine, which I showed at an investors office.. they laughed about it! This was in about 1990, but it has been in my mind since I was a kid, since about 1984. Anyhow, I found out I'm not the only one who had this idea, It has been around since 1931! I'm very glad people are now realizing that idea.
Google for:
solar chimney power plant, solar tower technology.
Or in German: aufwindkraftwerk


WINDMOLENPOORT


Invention: Windmill Gate
Invention date: 2000
Inventor: Giesbert Nijhuis
Short description: This specific gate is always very windy, because the building blocks the wind. This building is part of a "green" project in Amsterdam, but the power of this windy gate is lost, and most energy used is from dirty sources...
Advantages: "green" energy, near your home.
Problems? It's often more energy efficient, safe, and less noisy to choose a remote location, were you can place huge windmills. On top of these buildings would be an improvement already. The design of this gate combined with these traditional shaped wind turbines is a poor choice, obviously.
Original?
I've seen much better designs, on top of sky scrapers, inbetween two large buildings. This was more of a spontaneous action because I found it kind of dumb for a green neighborhood not to use this powerful green energy. I wonder if a safe and silent solution could one day become common sight in cities.


KOUDE TURBINE STRAALMOTOR


Invention: Cold turbine gas engine
Invention date: 1993
Inventor: Giesbert Nijhuis
Short description: A gas turbine engine with a turbine driven by cold air instead of hot air. Goal: An easy to build, fuel efficient gas turbine engine. A gas turbine engine is a beautiful engine: its mass/power ratio is good, there are few moving parts and the fuel burning process is very clean compared to other fuel burning engines. A complex part though is the turbine, because it is placed in hot exhaust gasses. My invention is a turbine driven by cold air instead of hot exhaust gasses. The hot exhaust gasses suck cold air into the exhaust pipe, the new cold air stream now drives the turbine.
Advantages:  A cold turbine is  much easier to construct than a hot turbine, and the burning temperature can be higher than with normal gas turbines, so the fuel can burn cleaner.
Problems? The air suction might not be strong enough to drive the turbine.
Original?
Yes, I still haven't seen this anywhere else!
Down here, a photo of an air sucking exhaust pipe, to cool and/or reduce sound or heat signature. That's not the same.