Microwave buses


By Barry Fox Ronald Parise of Suffield, Connecticut, thinks he can make electric buses go farther. Today’s batteries can’t store enough charge for long journeys, and drivers don’t like stopping for top-ups. Parise proposes using a radio antenna on top of the bus to pick up microwave signals from overhead transmitters every few hundred metres along streets (W0 98/50996). Microwave energy is converted into electricity, which charges the battery or keeps an onboard flywheel turning. For safety reasons, the transmitters only switch on when a bus is directly underneath. Each bus has its own low-power radio beacon,
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