kai malte roever combined an air pump and bike light into a single device. the design not only fulfills two
purposes but also doesn’t require batteries. instead the light gets its power from the pumping action from
the air pump. using faraday’s law of induction the device charges itself while pumping, storing the energy
in the built-in rechargeable battery. the light itself uses LED lights to conserve even more energy. the light
mounts on the side of the bike frame pointing the light forward and making it easy to grab it the tires need
air. the small compact device reduces the amount of items the urban cyclists needs, combining two together
in a clever way. the PUYL is patent pending.
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via dvice
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