Bridgestone's airless tires are designed to never go flat

Bridgestone's airless tires are designed to never go flat:

This week at the Tokyo Auto Show in Japan Bridgestone showed off its latest development – puncture-less air-free tires. The tires are still in the concept phase, but have been successfully tested on single-person vehicles in Japan traditionally used for elderly people. The 9-inch wheels have thermoplastic-resin spokes that radiate from the rim to the tread, curving to the left and right for maximum structural support. The solid design doesn't require air, and consequently can't be punctured - so, no more flat tires.
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Airbus Seeks To Avoid Patent Royalties On Winglets

Airbus Seeks To Avoid Patent Royalties On Winglets: Planemaker Sues Aviation Partners Saying Patent Is Invalid Airbus has filed a lawsuit in Austin, TX, against Boeing partner Aviation Partners Inc., claiming its patent on winglets is invalid, and that the European planemaker should not have to pay royalties for the "sharklets" it plans to use on the A320neo aircraft.

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