Large shades go up with half the effort, thanks to a new UltraGlide gearbox sporting low-friction gears made from Delrin acetal. Delrin acetal with PTFE gives gears inside the window shade's gearbox ...
The mechanical properties of natural joints are considered unrivalled. Cartilage is coated with a special polymer layer allowing joints to move virtually friction-free, even under high pressure. Using ...
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