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340 results found
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displaying 166-168 |
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| Solar steam generator 
Have you ever played in the sun with a magnifying glass? Even the smallest ones can burn wood, or set grass on fire.So, why can't we build a manifying glass array, point that sun heat towards a steam turbine and produce electricity? Steam turbines are readily available as are the generators they drive. The major engineering would be setting up the glass array and building a solar tracking system to keep it aligned at the correct angle to the sun.Reward: My reward would be a big smile knowing we are finally using something else besides oil, gas or nuclear. 
There are 29 replies to this idea
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| Clip hook
You have an old and valued piece of cupboard/dresser/bookshelf and you want to hang something on it without using adhesive, nails screws etc? I do anyway. I want a thing that works like a bulldog clip but has a little hook on the end you squeeze. Then I could clip it to my shelf or the side of the dresser and hang things from it.Reward: a few for myself. They ought to be quite cheap to make.
There are 3 replies to this idea
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| Dried out Dry Erase Marker tip blues
Here is an idea for the makers of dry erase markers one that would really be of good use to parents care takers and educators of young children. A flip top cap attached to the marker that even a child can easily take off. The cap may necessitate a re-design of the marker tip whereby the cap could also be designed to flip back and perhaps be an ergonomic aid to how the person holds the marker.Another solution to the "I forgot to cap it!!!" dried out dry erase marker tip blues is to design a retractable marker tip, since kids seem instinctivley love clicking retractable pens. Perhaps you can design a sort of reverse pressure sensitive device that retracts the marker tip when the marker tip is not in use, thus no pressure on the tip would make the tip automatically retract back into its protective barrel.Reward: A work from home idea marketing job would be nice but if not Ok yes I would like a package or more of different colored markers utilizing one or more of these design ideas.
There is 1 reply to this idea
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