http://www.fastcompany.com/magazine/132/brilliant.html?page=0,1
The dominant player in this technology for the moment seems to be Michigan-based Fulton Innovation, which unveiled its first set of wirelessly charged consumer products at the Consumer Electronics Show early this year. Come April, Fulton’s new pad-based eCoupled system will be available to police, fire-and-rescue, and contractor fleets — an initial market of as many as 700,000 vehicles annually. The system is being integrated into a truck console designed and produced by Leggett & Platt, a $4.3 billion commercial shelving giant; it allows users to charge anything from a compatible rechargeable flashlight to a PDA. The tools and other devices now in the pipeline at companies such as Bosch, Energizer, and others will look just like their conventional ancestors. Companies such as Philips Electronics, Olympus, and Logitech will create a standard for products, from flashlights to drills to cell phones to TV remotes, by the end of this year.
TECH 2: Radio-frequency Harvesting
Availability: April
>> THE INDUCTION SYSTEMS are only the beginning. Some of the most visually arresting examples of wireless electricity are based on what’s known as radio frequency, or RF. While less efficient, they work across distances of up to 85 feet. In these systems, electricity is transformed into radio waves, which are transmitted across a room, then received by so-called power harvesters and translated back into low-voltage direct current. Imagine smoke detectors or clocks that never need their batteries replaced. Sound trivial? Consider: Last November, to save on labor costs, General Motors canceled the regularly scheduled battery replacement in the 562 wall clocks at its Milford Proving Ground headquarters. This technology is already being used by the Department of Defense. This year, it will be available to consumers in the form of a few small appliances and wireless sensors; down the road, it will appear in wireless boxes into which you can toss any and all of your electronics for recharging.