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AaronBurns
 USA
Flexable Circular Rubber Springing Sling-Shot Printer Friendly Version
A sling shot that is completely round and made of a very thin, strong rubber, in any color, that is centered just like a Native American drum toy. Tied to a outer, plastic, round circle then, attached to a rubber sling with a plastic handle to hold onto for that added spring. You simply pull back on a rubber handle, attached to the back of the rubber circle center and let go. With the rubber center and the partial rubber handle you have twice the power in slinging objects that you trap in the center of the sling shot and when it is in the center of the sling-shot it is more accurate than the usual sling shot because it doesn't move from side to side but, just from back to forward which, will send it straight out instead of to the side, even slightly. This sling has two properties. It has the rubber, circular, center that will be extremely effective in shooting out anything fast and accurate and the partial, upper, handle that, attaches to the sling on top and a hard plastic handle at the bottom for maximum velocity and spring action. Easy to make, cheap and can be made to have different strengths so that, you could even make a weak one for kids in the house for nurf balls or shooting paper balls. You can even make one strong enough to shoot hundreds of yards. Many uses and for all ages.
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AaronBurns
 USA
Retractable Face Shield for Bike Helmets Printer Friendly Version
Detachable, retractable (it goes up to the top of the regular bike helmet or down in front of your face) face shield much like the face shields worn by police officers wearing riot gear masks but, with much lighter weight (thin but, strong clear plastic). Not for impact protection but, has many other protective features such as pebbles, bugs, wind burn, dirt, dust, or other flying debrise protecting all parts of your face especially your eyes from abrasion from objects in the air (dust can scratch your eyes and mess with your breathing). It would sit on top of your head and helmet, when not in use, completely out of the way and would not alter the existing design of bike helmets of today. You could even un-snap it and take it off completely returning your helmet back to original design. What we are trying to avoid with this design is adding weight or obscuring vision and by making the mask limited in size and only in front of the face we solve both these problems especially since plastic can be strong, durable, replaceable, and light in weight. Cheap to make and cheap to buy and a very easy thing to add to existing helmet designs.
Reward: Credit 

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49°

    
AaronBurns
 USA
H2O Splitter Scuba Tanks Printer Friendly Version
Simply split the hydrogen and oxygen and have two useful products for under water use. You can breath the oxygen created from the splitting of the H2O and use the hydrogen as a propellent. Normally we compress the oxygen in tanks and then dive. But, with the chemicals added in on extra tank that takes in the water and splits it into oxygen and hydrogen you can stay under water a much longer time. It might be better for deeper diving as well.
Reward: Credit 

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36°

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